---
title: "Updates"
description: "New updates and improvements"
icon: "sparkles"
rss: true
tag: "New"
---

<Update label="v1.27.1" description="May 2026">
  ## ChatGPT App metadata & inspector MCP App width fix
  Patch release surfacing tool `outputSchema` in `tools/list`, adding tool annotations and `outputSchema` to the `create-mcp-use-app` mcp-apps template, and fixing MCP App width in inspector chat.

- **Fix**: Forward `outputSchema` from tool definitions into the MCP SDK so `tools/list` exposes output JSON Schema for clients — required for ChatGPT App Store metadata validation (`#1466`)
- **New** (create-mcp-use-app): MCP tool `annotations` (`readOnlyHint`, `openWorldHint`, `destructiveHint`) and widget `outputSchema` in the `mcp-apps` template; tool annotations in the `starter` template; MCP Apps docs aligned with ChatGPT App Store metadata expectations (`#1466`)
- **Fix** (@mcp-use/inspector): MCP App width is pinned in chat — only height responds to widget-reported sizes, so the chat panel no longer collapses when a widget reports narrower content (`#1462`) (see inspector changelog)
- **Documentation**: Clerk and WorkOS OAuth example READMEs now link to live pages — Clerk Dashboard `/sign-in` (200 instead of 404) and WorkOS `/docs/authkit` (`#1470`)
- **Update**: Updated @mcp-use/inspector to v5.0.1
- **Update**: Updated @mcp-use/cli to v3.1.4
- **Update**: Updated create-mcp-use-app to v0.14.11
</Update>

<Update label="v1.27.0" description="May 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.27.0&title=Clerk%20OAuth%2C%20pre-registered%20client%20IDs%20%26%20inspector%20providers&date=2026-05&lang=typescript" alt="Release 1.27.0" />
  </Frame>
  ## Clerk OAuth, pre-registered client IDs & inspector providers
  Minor release adding a Clerk OAuth provider, pre-registered OAuth client credentials for proxy-mode flows, OpenRouter and OpenAI-compatible providers in the Inspector chat, browser-side telemetry env-var honoring, and a CLI fix for env propagation on redeploys.

- **New**: `oauthClerkProvider` for using Clerk as an OAuth authorization server in MCP servers — DCR-direct mode where MCP clients register and authenticate directly with Clerk and the server verifies Clerk-issued JWTs via JWKS; default scopes are `["profile", "email", "offline_access"]` and `openid` is excluded by default because it requires OIDC to be explicitly enabled in the Clerk Dashboard (`#1429`)
- **New**: Pre-registered OAuth client credentials in proxy mode — `UseMcpOptions` / `McpServerOptions` accept `oauth: { clientId?, clientSecret?, scope? }`; with `clientId` set, `BrowserOAuthClientProvider` returns it from `clientInformation()` so the SDK skips Dynamic Client Registration (required for providers like Slack or WorkOS that strip `registration_endpoint` from metadata); with `clientSecret` set, the SDK auto-switches token-endpoint auth from `none` to `client_secret_basic`/`client_secret_post` (`#1400`)
- **Fix**: `MCP_USE_ANONYMIZED_TELEMETRY=false` now disables the in-browser `useMcp` `posthog-js` init — the inspector server mirrors the env var into a per-page runtime flag (`window.__MCP_USE_ANONYMIZED_TELEMETRY__`) before the client bundle runs, so a single env var disables every telemetry path (Node-side, server-side proxy, and browser); the flag is page-scoped so unsetting the env var fully restores defaults on the next page load (`#1443`)
- **Fix** (@mcp-use/cli): `mcp-use deploy --env`/`--env-file` propagates env vars on redeploys — previously only forwarded on initial server creation, now upserts each entry against the env-variables API (`PATCH` for existing keys, `POST` for new keys) before triggering the deployment (`#1433`)
- **Enhancement** (@mcp-use/inspector): OpenRouter and OpenAI-compatible providers in chat configuration; `Client ID` / `Client Secret` / `Scope` fields in the Authentication dialog (see inspector changelog)
- **Update**: Updated @mcp-use/inspector to v5.0.0
- **Update**: Updated @mcp-use/cli to v3.1.3
</Update>

<Update label="v1.25.2" description="April 2026">
  ## Debug log tiers & widget dev first render
  Patch release adding tiered `MCP_DEBUG_LEVEL` logging for MCP servers, pre-warming Vite widget entries in dev to avoid first-render 504s, and Inspector 3.0.2 (see inspector changelog).

- **New**: `MCP_DEBUG_LEVEL` environment variable on MCP servers — `info` (default), `debug`, or `trace` — tiered framework logging with clearer precedence than legacy truthy `DEBUG` (`#1430`)
- **Fix**: Widget dev server pre-warms Vite entries before tool registration so the first widget render does not time out with HTTP 504 (`#1425`)
- **Fix** (@mcp-use/inspector): Command palette e2e tests updated for the Settings dropdown trigger (`#1428`) (see inspector changelog)
- **Update**: Updated @mcp-use/inspector to v3.0.2
- **Update**: Updated @mcp-use/cli to v3.1.2
- **Update**: Updated create-mcp-use-app to v0.14.10
</Update>

<Update label="v1.25.1" description="April 2026">
  ## OAuth error handling, Supabase endpoints & CLI bundling
  Patch release fixing OAuth error redirects, Supabase OAuth 2.1 endpoints, CLI bundling for Node ESM, bun build compatibility, `create-mcp-use-app` dot-directory init, and Inspector 3.0.1 (see inspector changelog).

- **Fix**: OAuth callback redirects back to the inspector with error parameters when authorization fails (user denies, server error) instead of surfacing a raw error page with stack traces; the inspector surfaces these as a persistent toast (`#1381`)
- **Fix**: `SupabaseOAuthProvider` endpoint getters now return OAuth 2.1 paths (`/auth/v1/oauth/authorize`, `/auth/v1/oauth/token`) instead of the legacy `/auth/v1/authorize` and `/auth/v1/token` (`#1422`)
- **Fix** (@mcp-use/cli): `mcp-use build` is non-fatal under the bun runtime — detects bun, skips `tsx/esm/api` type-generation with a warning, wraps the build in try/catch, and runs `tsc` via `process.execPath` instead of hardcoded `node` (`#1382`)
- **Fix** (@mcp-use/cli): bundle each server entry with esbuild (`bundle: true`, `packages: "external"`) so extensionless relative TypeScript imports resolve under plain Node ESM without `ERR_MODULE_NOT_FOUND` (`#1357`)
- **Fix** (create-mcp-use-app): allow `.` as project name to initialize in the current directory; errors if the directory is not empty (`#1413`)
- **Enhancement** (@mcp-use/inspector): OAuth single-tab redirect, session-storage reconnect, Hono duck-type detection, widget z-index, free-tier embed UI, managed LLM embed chrome (see inspector changelog)
- **Update**: Updated @mcp-use/inspector to v3.0.1
- **Update**: Updated @mcp-use/cli to v3.1.1
- **Update**: Updated create-mcp-use-app to v0.14.10
</Update>

<Update label="v1.25.0" description="April 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.25.0&title=OAuth%20DCR-direct%2C%20Next.js%20drop-in%20%26%20CLI%203.1&date=2026-04&lang=typescript" alt="Release 1.25.0" />
  </Frame>
  ## OAuth DCR-direct, Next.js drop-in & CLI 3.1
  Minor release refactoring built-in OAuth providers to DCR-direct by default, adding a Next.js MCP drop-in via `--mcp-dir`, CLI 3.1 with better org and session handling, and Inspector 3.0 (see inspector changelog).

- **New**: `oauthProxy` helper for building proxy-mode providers (Google, GitHub, or any upstream authorization server that does not support Dynamic Client Registration) — complements the new DCR-direct default (`#1321`)
- **New**: `jwksVerifier` helper for JWKS-based token verification inside custom providers (`#1321`)
- **New**: Auth0 OAuth proxy example under `examples/server/oauth/auth0-proxy` demonstrating the new proxy pattern
- **Update**: Built-in providers (Auth0, WorkOS, Supabase, Keycloak, Better Auth) now only support DCR-direct — clients talk to upstream authorization servers directly, and provider configurations no longer accept `clientId` / `clientSecret` (`#1321`)
- **Update**: `verifyToken` is now a required function on custom providers (`#1321`)
- **Fix**: OAuth `authenticate()` preserves the pathname component (for example `/api/auth`) when the authorization server uses a `basePath`, instead of collapsing the URL to its origin (`#1360`)
- **New**: Next.js drop-in — `mcp-use dev/build/start --mcp-dir <dir>` lets a Next.js app colocate an MCP server (default `src/mcp/`), share `@/*` aliases, Tailwind, and the app's component library; the CLI auto-shims Next.js server-runtime modules (`server-only`, `client-only`, `next/cache`, `next/headers`, `next/navigation`, `next/server`) when `next` is detected, loads the Next.js env cascade in the MCP server process, and widget builds fail fast when a widget transitively imports a server-only module (`#1332`)
- **New** (@mcp-use/cli): `mcp-use login --org <slug|id|name>` for non-interactive org selection; login fails fast without a TTY and no `--org` instead of hanging on stdin (`#1379`)
- **New** (@mcp-use/cli): ORG column in `mcp-use deployments list` output (`#1378`)
- **Fix** (@mcp-use/cli): `mcp-use deploy --org <org>` now respects the flag when `.mcp-use/project.json` links to a server in a different org — CLI warns and creates a new server in the requested org instead of silently redeploying to the linked one (`#1380`)
- **Fix** (@mcp-use/cli): `mcp-use login` validates the stored API key against the backend before short-circuiting with "already logged in"; expired or revoked keys drop into device-auth automatically, and authenticated commands (`whoami`, `org`, `servers`, `deployments`, `env`) funnel 401s through a shared handler with a "session expired — run `npx mcp-use login`" hint (`#1383`)
- **Fix** (@mcp-use/cli): `mcp-use start` auto-discovers an available port when the default port is in use (`#1377`)
- **Enhancement** (@mcp-use/inspector): Inline elicitation in the chat thread, Open Graph and Twitter Card meta tags on the hosted inspector (see inspector changelog)
- **Enhancement** (create-mcp-use-app): Only copy the `mcp-apps-builder` skill into new projects; skip the deprecated `mcp-builder` and `chatgpt-app-builder` skills (`#1375`)
- **Documentation**: New `oauth-proxy` provider guide and refactored provider pages (Auth0, WorkOS, Supabase, Keycloak, Better Auth, custom); new Next.js drop-in guide; updated CLI reference
- **Update**: Updated @mcp-use/inspector to v3.0.0
- **Update**: Updated @mcp-use/cli to v3.1.0
- **Update**: Updated create-mcp-use-app to v0.14.9
</Update>

<Update label="v1.24.2" description="April 2026">
  ## Landing deeplinks, `colorScheme` & Inspector 2.2
  Patch release adding optional `colorScheme` on `McpUseProvider`, a server landing deeplink to the hosted inspector, stronger deploy behavior in `@mcp-use/cli`, cloud server environment-variable commands, and Inspector 2.2 (see inspector changelog).

- **New**: `colorScheme` on `McpUseProvider` (default `false`) — when `false`, `ThemeProvider` does not set `color-scheme` on the document root so transparent iframe backgrounds stay transparent; opt in with `true` for native scrollbars / `light-dark()` in widgets
- **Fix**: Server landing routes include a deeplink to open the MCP server in the hosted manufact inspector
- **New** (@mcp-use/cli): `mcp-use servers env` subcommands to list, create, update, and delete environment variables on cloud servers (`#1372`)
- **Fix** (@mcp-use/cli): `mcp-use deploy` surfaces failures from mutating git commands (init, commit, push), normalizes the default branch to `main` before push, verifies a commit exists, and shell-quotes commit messages (`#1354`)
- **Update** (@mcp-use/cli): Deploy treats HTTP 401 as an invalid or expired API session and prompts re-authentication instead of misreporting GitHub App connection state (`#1356`)
- **Enhancement** (@mcp-use/inspector): Hosted chat configuration, copy/export chat, inspector LLM stack without LangChain, OAuth popup close page, and related UX (see inspector changelog)
- **Update**: Updated @mcp-use/inspector to v2.2.0
- **Update**: Updated @mcp-use/cli to v3.0.2
</Update>

<Update label="v1.24.1" description="April 2026">
  ## OAuth fetch cleanup when switching transports
  Patch release fixing OAuth in the embedded inspector when switching from Via Proxy to Direct — `BrowserOAuthClientProvider` restores `window.fetch` when `useMcp` unmounts so a stale proxy interceptor cannot break direct flows.

- **Fix**: Restore the `window.fetch` interceptor installed by `BrowserOAuthClientProvider` when `useMcp` unmounts — resolves "Protected resource does not match" after switching from Via Proxy to Direct
- **Fix** (@mcp-use/inspector): Same fetch lifecycle in the inspector client (see inspector changelog)
- **Update**: Updated @mcp-use/inspector to v2.1.0
- **Update**: Updated @mcp-use/cli to v3.0.1
</Update>

<Update label="v1.24.0" description="April 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.24.0&title=OAuth%20scopes%2C%20telemetry%2C%20CLI%203%20%26%20device%20flow&date=2026-04&lang=typescript" alt="Release 1.24.0" />
  </Frame>
  ## OAuth scopes, telemetry & CLI 3
  Minor release for `mcp-use` with OAuth scope customization, telemetry, sub-path OAuth routing, and a Generative-AI JSON Schema fix; major `@mcp-use/cli` release with device-flow auth and manufact API alignment; Inspector 2.0 (see inspector changelog).

- **New**: Configurable OAuth scopes — `scopesSupported` on shared OAuth config and built-in providers
- **Fix**: `CustomProviderConfig` matches documented fields (`jwksUrl`, `scopesSupported`, `userInfoEndpoint`, `clientId`, `clientSecret`, `mode`, `audience`); optional `getClientId()`, `getUserInfoEndpoint()`, and `getAudience()` on `OAuthProvider`; OAuth routes use those accessors instead of unsafe casts
- **New**: Telemetry support with browser and Node implementations and related dependency updates
- **New**: `defaultCallbackUrl` on `McpClientProvider` so OAuth redirect URLs stay correct when the UI is mounted under a path basename (for example embedded inspector at `/inspector`)
- **Fix**: Google provider tool schemas — use `z.object({}).catchall()` instead of `z.record()` so emitted JSON Schema omits `propertyNames`, which Google's API rejects
- **Fix**: Windows path handling in server and tooling code paths
- **Enhancement**: Several internal log lines moved from info to debug to reduce noise in normal operation
- **Fix** (@mcp-use/inspector): OAuth callback URL when the inspector basename is `/inspector`; thinking indicator after streamed assistant messages; tab persistence across refresh (see inspector changelog)
- **New** (@mcp-use/cli): Device-flow authentication for login and session refresh against the cloud
- **Update** (@mcp-use/cli): CLI refactored to new manufact cloud APIs across deploy, auth, organization, and server commands
- **Fix** (@mcp-use/cli): Deployment flow when linking GitHub repositories (`#1331`)
- **Update**: Updated @mcp-use/inspector to v2.0.0
- **Update**: Updated @mcp-use/cli to v3.0.0
</Update>

<Update label="v1.23.1" description="April 2026">
  ## Embedded inspector without LangChain
  Patch release fixing embedded inspector when the agent graph is not installed, and clearer diagnostics when mounting the inspector UI fails.

- **Fix**: Export `telFetch` from `mcp-use/telemetry/tel-fetch` (tsup build) so inspector server code does not import the root `mcp-use` entry, which eagerly loads the agent stack — fixes embedded inspector when `langchain` is not installed
- **Fix**: Log inspector UI mount failures in development or when `MCP_USE_DEBUG` is set (production remains quiet)
- **Fix** (@mcp-use/inspector): `telFetch` import uses the telemetry subpath (see inspector changelog)
- **Update**: Updated @mcp-use/inspector to v1.0.1
- **Update**: Updated @mcp-use/cli to v2.21.4
</Update>

<Update label="v1.23.0" description="April 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.23.0&title=Better%20Auth%2C%20Server%20Metadata%20%26%20Inspector%201.0&date=2026-04&lang=typescript" alt="Release 1.23.0" />
  </Frame>
  ## Better Auth, server metadata & Inspector 1.0
  Minor release adding a Better Auth OAuth provider, metadata-only client updates, dependency hardening, and a major Inspector release.

- **New**: Better Auth OAuth provider for MCP servers — see authentication docs and `examples/server/oauth/better-auth`
- **New**: `updateServerMetadata()` on `McpClientProvider` updates display metadata without reconnecting; connection-affecting changes still use `updateServer()`
- **Fix**: Windows-compatible ESM import paths for dev and tooling
- **Enhancement** (@mcp-use/inspector): Stream protocol in chat, `disabledTools`, editable server aliases with shared display-name resolution, tab persistence and URL sync, tool-invocation serialization and screenshots (see inspector changelog)
- **Update**: Vite 8.0.5, Hono 4.12.12, `@hono/node-server` 1.19.13 across the TypeScript workspace
- **Fix**: Tighter `pnpm` overrides and lockfile refresh for `pnpm audit`; `lodash` override in the mcp-apps scaffold template for standalone installs
- **Documentation**: `updateServerMetadata` in the `useMcpClient` API reference; authentication overview links to the Better Auth guide
- **Update**: Updated @mcp-use/inspector to v1.0.0
- **Update**: Updated @mcp-use/cli to v2.21.3
- **Update**: Updated create-mcp-use-app to v0.14.8
</Update>

<Update label="v1.22.3" description="March 2026">
  ## Inspector dependency & bundling alignment
  Patch release adjusting how `@mcp-use/inspector` depends on `mcp-use` so bundling and shared types both work.

- **Fix** (@mcp-use/inspector): Restore `mcp-use` as both a `dependency` and `peerDependency` — needed to bundle non-React subpaths (`mcp-use/auth`, `mcp-use/browser`) with transitive deps (e.g. LangChain), while `peerDependency` keeps `mcp-use`/`react` types aligned with the host app
- **Update**: Updated @mcp-use/inspector to v0.26.1
- **Update**: Updated @mcp-use/cli to v2.21.2
- **Update**: Updated create-mcp-use-app to v0.14.7
</Update>

<Update label="v1.22.2" description="March 2026">
  ## Type Compatibility & Peer Dependency Alignment
  Patch release focused on pnpm peer-variant type compatibility, inspector dependency alignment, and template dependency cleanup.

- **Fix**: Resolved TypeScript nominal type conflicts when `mcp-use` is installed as multiple pnpm peer-variant copies — moved internal client-init tracking off class surface to avoid `.d.ts` incompatibilities
- **Fix**: Reverted `stripInternal`/`@internal` approach that degraded downstream tool handler type inference; keeps type safety while preserving consumer inference behavior
- **Fix** (@mcp-use/inspector): Moved `mcp-use` from `dependencies` to `peerDependencies` so consumers share a single `mcp-use` type instance (addresses TS2322 duplicate-type scenarios)
- **Update** (@mcp-use/inspector): Upgraded `@mcp-ui/client` to v7; replaced removed legacy renderer path with sandboxed iframe handling for `ui://` resources and removed remote-dom usage
- **Update**: Updated @mcp-use/inspector to v0.26.0
- **Update**: Updated @mcp-use/cli to v2.21.1
- **Update**: Updated create-mcp-use-app to v0.14.7
</Update>

<Update label="v1.22.1" description="March 2026">
  ## CLI Organizations, Non-Interactive Deploy & Typed Middleware
  Patch release with CLI org management, non-interactive deployments, improved middleware/tool context propagation, typed middleware ergonomics, and ErrorBoundary customization.

- **New** (@mcp-use/cli): Organization commands — `mcp-use org list`, `mcp-use org switch`, `mcp-use org current`; login prompts for org selection when multiple; `whoami` shows active organization; org preference persisted in `~/.mcp-use/config.json`
- **Enhancement** (@mcp-use/cli): Deploy to a specific org with `mcp-use deploy --org <slug-or-id>`; all org-scoped API requests include `x-profile-id`
- **New** (@mcp-use/cli): Non-interactive deploy with `-y` / `--yes` — skips confirmations; replaces “Press Enter” with polling; errors if not logged in (requires `mcp-use login`)
- **Fix**: Context propagation into tool handlers — singleton AsyncLocalStorage via `globalThis`, safe Hono context extraction, and forwarding middleware `ctx.auth` / `ctx.state` into enhanced tool context
- **Fix**: `ctx.auth` typing is now `AuthInfo | undefined` when OAuth isn’t configured (enables `if (!ctx.auth) ...` guards)
- **Enhancement**: Typed MCP middleware context — `server.use("mcp:tools/call" | "mcp:resources/read" | "mcp:prompts/get", ...)` now narrows `ctx.params` to method-specific shapes; `mcp:*` remains generic
- **Enhancement**: `outputSchema` tools can return response helpers (`text()`, `markdown()`, `mix()`, etc.) without type errors
- **Enhancement**: `server.resourceTemplate()` supports an optional Zod `schema` to type `params` as `z.infer<schema>`
- **Enhancement**: `ErrorBoundary` now supports `fallback` (node or `(error) => node`) and `onError` for reporting (default UI unchanged)
- **Update**: Updated @mcp-use/inspector to v0.25.1
- **Update**: Updated @mcp-use/cli to v2.21.0
</Update>

<Update label="v1.22.0" description="March 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.22.0&title=Vite%208%2C%20MCP%20Middleware%20%26%20Model%20Context&date=2026-03&lang=typescript" alt="Release 1.22.0" />
  </Frame>
  ## Vite 8, MCP Middleware & Model Context
  Minor release with Vite 8 across tooling, MCP operation middleware, files and model context APIs, elicit and adapter fixes, and Inspector tunnel controls.

- **New**: MCP operation-level middleware — `server.use("mcp:*", ...)` and specific patterns (`mcp:tools/call`, `mcp:tools/list`, `mcp:resources/read`, `mcp:resources/list`, `mcp:prompts/get`, `mcp:prompts/list`) with typed `MiddlewareContext` (`method`, `params`, `session`, `auth`, `state`)
- **New**: `useFiles` React hook with `isSupported` and `modelVisible` for file attachments; `ModelContext` component and `modelContext` imperative API for server-side model context injection
- **Enhancement**: Vite 8.0 with Rolldown bundler and `@vitejs/plugin-react` 6 across packages, examples, and CLI/inspector tooling
- **Enhancement**: Conformance client — pass `reconnectionOptions` so SDK-level SSE reconnection behaves correctly when `autoReconnect` is disabled
- **Fix**: Elicit — map `result.content` to `result.data` for Zod validation; spec-compliant clients use `content`; backward-compatible fallback to `data`
- **Fix**: LangChainAdapter — tool name collisions when exposing resources/prompts as tools; `reserveName` resolves prefixed names with a numeric suffix when needed; prompt names sanitized like resource names
- **Enhancement** (@mcp-use/inspector): Start/stop the `mcp-use dev` tunnel from the Inspector (see inspector changelog)
- **Update**: Updated @mcp-use/inspector to v0.25.0
- **Update**: Updated @mcp-use/cli to v2.20.0
</Update>

<Update label="v1.21.5" description="March 2026">
  ## Zod Peer Dep, Esbuild Build & Windows Fix
  Patch release with Zod peer dependency, esbuild transpilation, TypeGen Zod v4 fixes, and Windows path handling.

- **Fix**: Move zod from dependencies to peerDependencies — prevents duplicate type trees when users have a different Zod v4 version; avoids type errors or OOM during `mcp-use build`
- **Fix**: TypeGen crash with Zod v4 enum schemas — `zod-to-ts` now handles Zod v4 `ZodEnum` (`_def.entries`), `ZodDiscriminatedUnion`; CLI reports success/failure of type generation instead of silently failing
- **Fix** (@mcp-use/cli): Windows crash in `mcp-use dev` and `mcp-use generate-types` — use `file://` URL in tsImport instead of raw OS paths (fixes `ERR_UNSUPPORTED_ESM_URL_SCHEME`)
- **Fix**: Dependabot security alerts — updated flatted, tar, hono, express-rate-limit, dompurify, minimatch, rollup, form-data, lodash, and other transitive deps
- **Enhancement** (@mcp-use/cli): `mcp-use build` uses esbuild for transpilation instead of tsc — avoids OOM on complex type graphs (Zod v4, Prisma); type checking runs separately via `tsc --noEmit`; add `--no-typecheck` to skip type checking for faster builds
- **Update**: Updated @mcp-use/inspector to v0.24.5
- **Update**: Updated @mcp-use/cli to v2.19.0
- **Update**: Updated create-mcp-use-app to v0.14.6
</Update>

<Update label="v1.21.4" description="March 2026">
  ## Request Context, CLI Build & README Fixes
  Patch release fixing request context propagation, CLI build hang, and stale monorepo references.

- **Fix**: `ctx.auth` and other request context properties were `undefined` in tool callbacks; `mountMcp()` now wraps `transport.handleRequest()` with `runWithContext()` so `getRequestContext()` is populated
- **Fix** (@mcp-use/cli): `mcp-use build` no longer hangs — add `process.exit(0)` on success (tsImport creates active handles)
- **Fix**: Update stale mcp-use-ts references in README badges, image URLs, eslint config to mcp-use monorepo
- **Update**: Updated @mcp-use/inspector to v0.24.4
- **Update**: Updated @mcp-use/cli to v2.18.3
</Update>

<Update label="v1.21.3" description="March 2026">
  ## Inspector Sandbox Host Fix
  Patch release fixing sandbox host derivation for cloud-embedded inspector pages.

- **Fix** (@mcp-use/inspector): Sandbox host derivation for cloud-embedded pages — apex hosts (e.g. manufact.com) now resolve to `sandbox-inspector.{domain}` instead of `sandbox-{domain}`
- **Update**: Updated @mcp-use/inspector to v0.24.3
- **Update**: Updated @mcp-use/cli to v2.18.2
</Update>

<Update label="v1.21.2" description="March 2026">
  ## Inspector Proxy Fix for Embedded Servers
  Patch release fixing inspector auto-connect when served from MCP server (Python, etc.).

- **Fix** (@mcp-use/inspector): Skip proxy when inspector is served from the MCP server itself — auto-connect no longer routes through missing `/inspector/api/proxy` on embedded servers
- **Fix** (@mcp-use/inspector): Detect proxy availability via runtime config injection; disable autoProxyFallback when no proxy is available
- **Update**: Updated @mcp-use/inspector to v0.24.2
- **Update**: Updated @mcp-use/cli to v2.18.1
</Update>

<Update label="v1.21.1" description="March 2026">
  ## Session Persistence & CLI Improvements
  Patch release with session recovery fix, CLI enhancements, and create-mcp-use-app install improvements.

- **Fix**: Session recovery after restart returns 400 fix; distributed SSE stream routing via Redis Pub/Sub
- **Enhancement** (@mcp-use/cli): `mcp-use build` runs tool registry type generation before TypeScript compilation when server file exists
- **Enhancement** (@mcp-use/cli): `--root-dir` option for deploy command for monorepo support
- **Fix** (create-mcp-use-app): Remove flickering behaviour from `npm i`
- **Update**: Updated @mcp-use/inspector to v0.24.1
- **Update**: Updated @mcp-use/cli to v2.18.0
- **Update**: Updated create-mcp-use-app to v0.14.4
</Update>

<Update label="v1.21.0" description="March 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.21.0&title=Proxy%20Servers%20%26%20Client%20Completion&date=2026-03&lang=typescript" alt="Release 1.21.0" />
  </Frame>
  ## Proxy Servers & Client Completion
  Minor release with server composition, client-side completion, user context, and Express middleware types.

- **New**: `MCPServer.proxy()` for composing multiple MCP servers into a single aggregator — automatic orchestration, schema translation, namespacing, list-changed multiplexing
- **New**: Client-side completion support — `complete()` on BaseConnector, MCPSession, and `useMcp`; `refreshResourceTemplates()`; prompt argument and resource template URI autocomplete
- **New**: `ctx.client.user()` for per-invocation end-user metadata (`subject`, `conversationId`) from tools/call params
- **Enhancement**: `ctx.client.supportsApps()` now correctly returns true for MCP Apps clients (fixed ClientCapabilitiesSchema `extensions` stripping)
- **Enhancement**: `autoReconnect` options — configurable health check interval, reconnection delay, timeout via `reconnectionOptions`
- **Enhancement**: `sendFollowUpMessage` accepts `MessageContentBlock` arrays (text, image, resource blocks) per SEP-1865
- **Enhancement**: Host info and capabilities — `hostInfo`, `hostCapabilities` in `useWidget`; `getHostInfo`, `getHostCapabilities` on `McpAppsBridge`
- **Fix**: Express middleware types — proper TypeScript types for `server.use()` with Express middleware (auto-detected and adapted)
- **Fix**: Session isolation — `findSessionContext` no longer falls back to arbitrary session, preventing metadata leakage
- **Fix**: Remove deprecated `@types/tar`; update tar to latest (cli, create-mcp-use-app)
- **Update**: Updated @mcp-use/inspector to v0.24.0
- **Update**: Updated @mcp-use/cli to v2.17.0
- **Update**: Updated create-mcp-use-app to v0.14.3
- **Documentation**: Per-server elicitation and sampling callbacks examples; proxy servers section
</Update>

<Update label="v1.20.5" description="February 2026">
  ## CLI Tunnel Support
  Patch release adding tunnel flag for ChatGPT HMR.

- **New** (@mcp-use/cli): Support for `--tunnel` flag with full ChatGPT HMR
- **Update**: Updated @mcp-use/inspector to v0.23.1
- **Update**: Updated @mcp-use/cli to v2.16.0
</Update>

<Update label="v1.20.4" description="February 2026">
  ## Inspector Embedded Chat
  Patch release with inspector embedded chat improvements.

- **Enhancement** (@mcp-use/inspector): Improved embedded chat
- **Update**: Updated @mcp-use/inspector to v0.23.0
- **Update**: Updated @mcp-use/cli to v2.15.4
</Update>

<Update label="v1.20.3" description="February 2026">
  ## Inspector Standalone Deployment Fix
  Patch release fixing inspector standalone deployment version import.

- **Fix** (@mcp-use/inspector): Standalone deployment was importing the version from the wrong path
- **Update**: Updated @mcp-use/inspector to v0.22.3
- **Update**: Updated @mcp-use/cli to v2.15.3
</Update>

<Update label="v1.20.2" description="February 2026">
  ## Health Monitoring & MCPAgentOptions
  Patch release with dynamic auth headers for health checks and MCPAgentOptions for chat agent.

- **Enhancement**: `getAuthHeaders` parameter to `startConnectionHealthMonitoring` for customizable authentication headers during health checks; HEAD requests allowed without authentication
- **Enhancement**: `exposeResourcesAsTools` and `exposePromptsAsTools` options in MCPAgentOptions (both default to `true`); inspector chat tab sets both to `false` so agent only exposes actual MCP tools
- **Update**: Updated @mcp-use/inspector to v0.22.2
- **Update**: Updated @mcp-use/cli to v2.15.2
</Update>

<Update label="v1.20.1" description="February 2026">
  ## Widget Status Texts & CSP Handling
  Patch release with widget metadata enhancements and CSP improvements.

- **New**: `invoking` and `invoked` properties in widget metadata for customizable status messages during tool execution
- **Breaking**: McpUseProvider no longer includes BrowserRouter; add it explicitly if your widget uses react-router
- **Enhancement**: MCPAppsDebugControls CSP mode violation indicators; sandbox-proxy strips existing CSP meta tags before injecting permissive CSP
- **Fix** (create-mcp-use-app): Unify logo display across all CLI entry paths
- **Update**: Updated @mcp-use/inspector to v0.22.1
- **Update**: Updated @mcp-use/cli to v2.15.1
</Update>

<Update label="v1.20.0" description="February 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.20.0&title=Widget%20Debug%20%26%20CSP%20Improvements&date=2026-02&lang=typescript" alt="Release 1.20.0" />
  </Frame>
  ## Widget Debug & CSP Improvements
  Minor release with Iframe Console enhancements, MCP Apps debug controls, and CSP handling.

- **New**: CLI update check notifies when a newer mcp-use release is available
- **Fix**: CLI TSC build uses node with increased heap; avoid npx installing wrong package
- **Fix**: CLI fallback MCP_URL when tunnel is unavailable
- **New** (create-mcp-use-app): @types/react and @types/react-dom in template devDependencies
- **Enhancement**: Slim down generated READMEs; improve mcp-apps template (Carousel, product-search-result widget); include .mcp-use in tsconfig; fix postinstall script
- **Fix**: create-mcp-use-app product-search-result template styling and CSP metadata
- **Enhancement**: Iframe Console with expandable logs, level filter, search, resizable height
- **New**: Widget debug context for chat; MCP Apps debug controls (tool props JSON view, required props hint, SEP-1865 semantics)
- **New**: CDN build for inspector; CSP violations panel with clear action; widget re-execution on CSP mode change; CSP mode for Apps SDK
- **Fix**: useSyncExternalStore first-render handling; reconnect logic; Tools tab only sends explicitly set fields; resource annotations include `_meta`
- **Fix**: mcp-use widget CSP fallback from tool metadata; protocol and mount-widgets-dev improvements
- **Enhancement**: useWidget merges props from toolInput and structuredContent per SEP-1865
- **New**: updateModelContext and useMcp clientOptions
- **Fix**: WorkOS subdomain config to accept full AuthKit domain (e.g., `name.authkit.app`)
- **Update**: Updated @mcp-use/inspector to v0.22.0
- **Update**: Updated @mcp-use/cli to v2.15.0
</Update>

<Update label="v1.19.3" description="February 2026">
  ## CLI Skills & Template Updates
  Patch release with CLI skills commands and create-mcp-use-app template improvements.

- **New** (@mcp-use/cli): `mcp-use skills add` and `mcp-use skills install` commands to install AI agent skills (Cursor, Claude Code, Codex) from the mcp-use repository
- **Enhancement** (create-mcp-use-app): Add @types/react and @types/react-dom to template devDependencies
- **Update**: Updated @mcp-use/inspector to v0.21.1
- **Update**: Updated @mcp-use/cli to v2.14.0
</Update>

<Update label="v1.19.2" description="February 2026">
  ## Tool Schema & Type Testing Improvements
  Patch release with nested input schema fixes and compile-time type regression testing.

- **Fix**: Correctly convert nested input schema args for tools
- **New**: Added everything-server example for compile-time type regression testing
- **Update**: Updated @mcp-use/inspector to v0.21.0
- **Update**: Updated @mcp-use/cli to v2.13.10
</Update>

<Update label="v1.19.1" description="February 2026">
  ## MCPApps & Widget Loading Enhancements
  Patch release improving widget loading logic and iframe handling.

- **Enhancement**: Improved MCPAppsRenderer loading logic with better state management
- **Enhancement**: Enhanced useWidget for iframe handling
- **Update**: Updated @mcp-use/inspector to v0.20.1
- **Update**: Updated @mcp-use/cli to v2.13.9
</Update>

<Update label="v1.19.0" description="February 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.19.0&title=Client%20Conformance%20%26%20Type%20Safety%20Improvements&date=2026-02&lang=typescript" alt="Release 1.19.0" />
  </Frame>
  ## Client Conformance & Type Safety Improvements
  Minor release with full MCP client conformance, direct stdio connector support, and type inference fixes.

- **New**: Client implementation is now 100% conformant with the MCP spec
- **Enhancement**: Node.js client handles stdio connector directly with command/argument configuration
- **Fix**: `error()` return type now compatible with tool callbacks using `outputSchema`
- **Fix**: Fixed `TypedCallToolResult` type inference with explicit properties instead of Omit
- **Fix**: Enhanced `prompt()` method generic type inference to match `tool()` pattern
- **Enhancement**: Console output routes through Logger class with improved consistency; added tests for logLevel
- **Enhancement**: Added support for additional Vitest file extensions in config
- **Fix**: Correct MIME type for mcp_apps resource counting; disabled telemetry in local tests
- **Update**: Updated @mcp-use/inspector to v0.20.0
- **Update**: Updated @mcp-use/cli to v2.13.8

### @mcp-use/cli v2.13.8

- **Enhancement**: Improved loading states with spinner component
- **Fix**: Correct MIME type for mcp_apps resource counting

### create-mcp-use-app v0.13.0

- **New**: Interactive prompts for optional skills installation (claude-code, cursor, codex)
- **New**: `--install` and `--no-install` CLI flags for non-interactive mode
- **Fix**: Corrected template reference in test-cli.sh
</Update>

<Update label="v1.18.0" description="February 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.18.0&title=DNS%20Rebinding%20%26%20Deferred%20Callbacks&date=2026-02&lang=typescript" alt="Release 1.18.0" />
  </Frame>
  ## DNS Rebinding Protection & Deferred Client Callbacks
  Minor release adding DNS rebinding protection and deferred React client callbacks.

- **New**: `allowedOrigins` configuration on `MCPServer` for DNS rebinding protection and host validation; docs and example (curl tests) added
- **Enhancement**: `McpClientProvider` defers `onServerAdded` and `onServerStateChange` callbacks via `queueMicrotask` to avoid render-phase updates and improve stability
- **Update**: Updated @mcp-use/inspector to v0.19.0
- **Update**: Updated @mcp-use/cli to v2.13.7
</Update>

<Update label="v1.17.4" description="February 2026">
  ## Widget Resource Propagation & Log Noise Reduction
  Patch release improving HMR reliability for widget resources and reducing dev server log noise.

- **Fix**: Reduced noisy logs in the dev server
- **Fix**: Propagated widget resources and resource templates to already-connected MCP sessions during HMR to avoid `Resource ui://widget/... not found` errors without reconnecting
- **Update**: Updated @mcp-use/inspector to v0.18.9
- **Update**: Updated @mcp-use/cli to v2.13.6
</Update>

<Update label="v1.17.3" description="February 2026">
  ## Inspector Reliability Alignment
  Patch release aligning TypeScript packages with the latest inspector reliability fixes.

- **Enhancement**: Pulled in inspector fixes for widget readiness resets and safer iframe global update handling
- **Update**: Updated @mcp-use/inspector to v0.18.8
- **Update**: Updated @mcp-use/cli to v2.13.5
</Update>

<Update label="v1.17.2" description="February 2026">
  ## UI Resource Metadata & CSP Injection Fixes
  Patch release improving server-origin metadata enrichment for UI resources.

- **Fix**: UI resource metadata enrichment now guarantees metadata initialization before applying origin-based updates
- **Enhancement**: Server origin is now consistently injected into widget CSP fields (`resourceDomains`, `connectDomains`, `baseUriDomains`)
- **Update**: Updated @mcp-use/inspector to v0.18.7
- **Update**: Updated @mcp-use/cli to v2.13.4
</Update>

<Update label="v1.17.1" description="February 2026">
  ## useWidget Type Inference Improvements
  Patch release improving `useWidget` typing precision for pending vs ready states.

- **Enhancement**: `UseWidgetResult` now uses a discriminated union on `isPending` for more accurate TypeScript inference
- **Enhancement**: Added `UseWidgetResultBase` to separate shared fields from pending-state-specific props
- **Update**: Updated @mcp-use/inspector to v0.18.6
- **Update**: Updated @mcp-use/cli to v2.13.3
</Update>

<Update label="v1.17.0" description="February 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.17.0&title=Resource%20Template%20Completion%20%26%20Reverse%20Proxy%20Support&date=2026-02&lang=typescript" alt="Release 1.17.0" />
  </Frame>
  ## Resource Template Completion & Reverse Proxy Support
  Minor release adding resource template variable completion, custom route HMR, and comprehensive reverse proxy support.

### Resource Template Completion

- **New**: Resource template variable completion — templates can define `callbacks.complete` per variable (string array or callback) for client-side autocomplete of URI template variables
- **New**: `toResourceTemplateCompleteCallbacks` utility for normalizing completion definitions
- **New**: MCP servers now publish completion capabilities

### HMR & Reverse Proxy Improvements

- **New**: Custom HTTP route HMR — routes registered via `server.get()`, `server.post()`, etc. now hot-swap without restart
- **New**: Widget tool protection during HMR — tools tagged with `_meta["mcp-use/widget"]` preserved during sync
- **New**: Dynamic widget creation — `resources/` directory auto-created, dev server watches for new widgets even if none exist at startup
- **New**: Vite HMR WebSocket proxy for hot-reload through reverse proxies (ngrok, E2B, Cloudflare tunnels)
- **New**: `MCP_URL` environment variable can be pre-set by users for external proxy URLs; CLI will not overwrite it
- **New**: `window.__mcpServerUrl` global injected into widget HTML for dynamic API URL construction
- **Enhancement**: List-changed notifications now fire on removal, not just add/update
- **Enhancement**: Pre-initialized request handlers prevent `-32601 Method not found` errors on dynamic tool registration
- **Enhancement**: Widget type default changed to `mcpApps` (dual-protocol) instead of `appsSdk`

### Dependencies

- **Update**: Updated @mcp-use/inspector to v0.18.5
- **Update**: Updated @mcp-use/cli to v2.13.2
</Update>

<Update label="v1.16.4" description="February 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.16.4&title=HMR%20Improvements%20%26%20Widget%20Enhancements&date=2026-02&lang=typescript" alt="Release 1.16.4" />
  </Frame>
  ## HMR Improvements & Widget Enhancements
  Patch release with Hot Module Reload improvements, widget lifecycle enhancements, and CLI build system improvements.

### HMR & Server Improvements

- **Fix**: Tool schema preservation during HMR now uses Zod schemas directly instead of converting to params
- **Fix**: Empty schema changed from `{}` to `z.object({})` to ensure `safeParseAsync` works correctly
- **Enhancement**: Prompts now support tool response helpers (`text()`, `object()`, `image()`, etc.) via automatic conversion to `GetPromptResult`
- **Enhancement**: Resources now support tool response helpers via automatic conversion to `ReadResourceResult`
- **Enhancement**: Widget resources (`ui://widget/*`) and resource templates preserved during HMR
- **Enhancement**: Enhanced prompt conversion to handle edge cases (single content objects, bare content items, mixed content arrays)

### CLI Build Improvements

- **New**: Build manifest with `entryPoint` tracking written to `dist/mcp-use.json` for reliable server location
- **Enhancement**: Support for multiple TypeScript output paths (dist/index.js, dist/src/index.js, custom paths)
- **Enhancement**: Start command reads `entryPoint` from manifest for accurate server location
- **Enhancement**: Clear error messages when no built server file is found, listing all attempted locations

### Widget Improvements

- **Fix**: Widget pending state now correctly emulated to reflect ChatGPT behavior
- **Enhancement**: Immediate widget rendering during pending states
- **Enhancement**: Enhanced widget lifecycle management with better tool output handling
- **New**: Delayed weather tool example (`get-weather-delayed`) in conformance server for testing widget lifecycle

### Dependencies

- **Update**: Updated @modelcontextprotocol/sdk to v1.26.0 (with Zod 4 compatibility patch)
- **Update**: Updated @mcp-use/inspector to v0.18.4
- **Update**: Updated @mcp-use/cli to v2.13.1
- **Update**: Updated create-mcp-use-app to v0.12.3
</Update>

<Update label="v1.16.3" description="February 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.16.3&title=CLI%20Manufact%20Rebrand&date=2026-02&lang=typescript" alt="Release 1.16.3" />
  </Frame>
  ## CLI Manufact Rebrand
  Minor release with CLI branding updates and authentication improvements.

### CLI Rebrand

- **Enhancement**: Updated CLI branding from "mcp-use" to "Manufact"
- **Enhancement**: Changed default web URL from `mcp-use.com` to `manufact.com` for login flow
- **Fix**: Fixed 431 "Request Header Fields Too Large" error by increasing callback server header limit to 16KB
- **Enhancement**: Updated dashboard, inspector, and settings URLs to use `manufact.com` domain
- **Enhancement**: Gateway domain remains `run.mcp-use.com` for backward compatibility with existing deployments

### Dependencies

- **Update**: Updated @mcp-use/cli to v2.13.0
- **Update**: Updated @mcp-use/inspector to v0.18.3
</Update>

<Update label="v1.16.2" description="January 2026">
  ## Widget Behavior Fix
  Patch release fixing widget pending state emulation.

- **Fix**: Widget pending state now correctly emulated to reflect ChatGPT behavior
- **Update**: Updated @mcp-use/inspector to v0.18.2
- **Update**: Updated @mcp-use/cli to v2.12.6
</Update>

<Update label="v1.16.1" description="January 2026">
  ## Widget CSP Enhancement
  Patch release fixing widget Content Security Policy configuration.

- **Fix**: Auto-inject server origin into `connectDomains` CSP
- **Enhancement**: Widgets can now make fetch/XHR/WebSocket calls back to the MCP server without explicitly declaring the domain
- **Fix**: Corrected oversight where CHANGELOG mentioned connectDomains injection but it was not implemented
</Update>

<Update label="v1.16.0" description="January 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.16.0&title=Prompt%20Autocomplete%20%26%20Dynamic%20CSP&date=2026-01&lang=typescript" alt="Release 1.16.0" />
  </Frame>
  ## Prompt Autocomplete & Dynamic CSP
  Minor release introducing prompt argument autocomplete and dynamic CSP domain injection for widgets.

### New Features

- **New**: `completable()` helper for prompt argument autocomplete
- **New**: Dynamic CSP domain injection for widgets at tools/list time

### Enhancements

- **Enhancement**: Request origin (from X-Forwarded-Host or Host header) now automatically added to `connectDomains` and `resourceDomains` in tool metadata
- **Enhancement**: Widgets now work correctly when accessed through proxies like ngrok, Cloudflare tunnels, or other reverse proxies
- **Enhancement**: Server origin automatically enriched in widget CSP metadata

### Dependencies

- **Update**: Updated @mcp-use/inspector to v0.18.0
- **Update**: Updated @mcp-use/cli to v2.12.4
</Update>

<Update label="v1.15.3" description="January 2026">
  ## HMR & Theme Fixes
  Patch release fixing Hot Module Reloading edge cases and theme functionality.

- **Fix**: HMR not working when server starts with 0 tools initially
- **Fix**: Dark mode can now be enabled through theme URL parameter
- **Update**: Updated @mcp-use/inspector to v0.17.3
- **Update**: Updated @mcp-use/cli to v2.12.3
</Update>

<Update label="v1.15.2" description="January 2026">
  ## HMR File Watcher Fix
  Patch release fixing file watcher resource exhaustion in containerized environments.

- **Fix**: HMR file watcher exhausting inotify limits by properly ignoring node_modules
- **Fix**: Prevented ENOSPC errors in containerized environments caused by watching files inside `node_modules/` despite ignore patterns
- **Update**: Updated @mcp-use/inspector to v0.17.2
- **Update**: Updated @mcp-use/cli to v2.12.2
</Update>

<Update label="v1.15.1" description="January 2026">
  ## CLI Deployment Enhancement
  Patch release with CLI deployment improvements.

- **Enhancement**: CLI `getMcpServerUrl()` function for improved deployment URL handling
- **Update**: Updated @mcp-use/cli to v2.12.1
- **Update**: Updated @mcp-use/inspector to v0.17.1
</Update>

<Update label="v1.15.0" description="January 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.15.0&title=MCP%20Apps%20Support%20%26%20Landing%20Pages&date=2026-01&lang=typescript" alt="Release 1.15.0" />
  </Frame>
  ## MCP Apps Support & Landing Pages
  Major release introducing MCP Apps support with dual-protocol widget rendering and HTML landing pages for MCP server endpoints.

### MCP Apps Support

- **New**: Dual-protocol support enabling widgets to work with both MCP Apps and ChatGPT Apps SDK
- **New**: `MCPAppsRenderer` component for advanced debugging and visualization
- **New**: `MCPAppsDebugControls` component for widget debugging
- **New**: Sandboxed iframe support with console logging and safe area insets for isolated widget rendering
- **New**: Widget adapters (MCP Apps, Apps SDK) with protocol helpers for seamless cross-protocol compatibility
- **New**: MCP Apps documentation and example server

### Landing Pages

- **New**: `generateLandingPage()` function that generates styled HTML landing pages for browser GET requests
- **New**: Connection instructions for Claude Code, Cursor, VS Code, VS Code Insiders, and ChatGPT on landing pages
- **Enhancement**: Browser host normalization for server connections in CLI

### Bug Fixes & Security

- **Fix**: MCP server landing now shows the external URL instead of the internal URL
- **Fix**: Zod JIT compilation to prevent CSP violations in sandboxed environments
- **Security**: Fixed vulnerabilities in dependencies

### Dependencies

- **Update**: Updated @mcp-use/inspector to v0.17.0
- **Update**: Updated @mcp-use/cli to v2.12.0
</Update>

<Update label="v1.14.2" description="January 2026">
  ## Widget Rendering & Session Management Improvements
  Patch release with widget rendering fixes, session timeout adjustments, and CLI deployment enhancements.

### Widget Rendering & Session Management

- **Fix**: Widget iframe reload by adding timestamp query parameter to force refresh when widget data changes
- **Fix**: Retry logic with exponential backoff for dev widget fetching to handle Vite dev server cold starts
- **Fix**: Default session idle timeout changed from 5 minutes to 1 day (86400000ms) to prevent premature session expiration
- **Fix**: Session lastAccessedAt tracking now updates both persistent store and in-memory map
- **Fix**: \_meta merging now preserves existing fields (e.g., openai/outputTemplate) when updating tools and widgets
- **Enhancement**: Support for frame_domains and redirect_domains in widget CSP metadata

### CLI Improvements

- **Fix**: Environment variables, build command, start command, and port configuration now properly passed during redeployment

### Documentation

- **Fix**: Updated sessionIdleTimeoutMs default value documentation from 5 minutes to 1 day across multiple files
</Update>

<Update label="v1.14.1" description="January 2026">
  ## Dependency Updates
  Patch release with dependency updates.

- **Update**: Updated dependencies to @mcp-use/inspector v0.16.1 and @mcp-use/cli v2.11.1
</Update>

<Update label="v1.14.0" description="January 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.14.0&title=Server%20Metadata%20%26%20Widget%20Enhancements&date=2026-01&lang=typescript" alt="Release 1.14.0" />
  </Frame>
  ## Server Metadata & Widget Enhancements
  Release introducing server metadata configuration and enhanced widget development experience.

### Server Metadata & Configuration

- **New**: Server metadata support with `title`, `websiteUrl`, and `icons` fields in MCP server configuration
- **New**: Inspector UI displays server website URLs and icons for better branding
- **Deprecated**: `autoCreateSessionOnInvalidId` config option - use `sessionStore` for persistent sessions
- **Enhancement**: Dynamic project name support in server configurations

### Widget & Development Experience

- **Enhancement**: HMR support for widget tool management - widgets update immediately without server restart
- **Enhancement**: Parallel widget building for improved development performance
- **Enhancement**: ReDoS attack prevention in widget name slugification with input length validation
- **Enhancement**: Improved widget lifecycle documentation with loading state guidance

### CLI Improvements

- **New**: `MCP_URL` environment variable automatically set in server process for easy access to server URL
- **Enhancement**: Server process environment now includes `MCP_URL` in both development and production modes
- **Enhancement**: CLI now displays all 4 package versions (`@mcp-use/cli`, `mcp-use`, `@mcp-use/inspector`, `create-mcp-use-app`) in `dev` and `build` commands with `mcp-use` highlighted for clarity

### API & Protocol

- **New**: HEAD request support in `mountMcp` function
- **Enhancement**: Improved input schema handling in tool registration with better defaults

### MCP Proxy Middleware

- **Enhancement**: Improved error logging with better context for debugging
- **Enhancement**: Connection refused errors now logged as warnings instead of errors
- **Enhancement**: Error responses include target URL to help identify failing proxy requests
- **Enhancement**: More detailed error messages for proxy request failures

### Bug Fixes

- **Fix**: Anthropic `tool_use.id` error resolved with LangChain package updates
- **Fix**: Telemetry shutdown method compatibility with posthog-node v5.22.0
- **Fix**: Input schema initialization now defaults to empty object when not provided

### Dependencies

- **Update**: `@langchain/anthropic` to 1.3.10 (fixes tool_call ID generation)
- **Update**: `@langchain/core` to 1.1.15
- **Update**: `langchain` to 1.2.10
- **Update**: `react-resizable-panels` to 4.4.1
</Update>

<Update label="v1.13.5" description="January 2026">
  ## CLI Documentation Enhancement
  Patch release adding comprehensive CLI documentation.

- **Enhancement**: Added `.gitignore` file to CLI package to exclude `.mcp-use` directory from version control
- **Enhancement**: Added `CLAUDE.md` to CLI package with comprehensive guidance on usage, development commands, architecture details, and deployment instructions
- **Enhancement**: Improved CSRF protection in authentication flow
- **Enhancement**: Enhanced error handling for GitHub integration in deploy command
</Update>

<Update label="v1.13.4" description="January 2026">
  ## OAuth Proxy URL Handling Improvements
  Patch release improving OAuth proxy URL handling and connection logic.

- **Refactor**: Changed `connectionUrl` from `let` to `const` to enforce immutability
- **Enhancement**: Enhanced logic for deriving `oauthProxyUrl` from callback URL, including handling cases where callback is at root path
- **Enhancement**: Updated comments to clarify distinction between `oauthProxyUrl` and `connectionUrl`
- **Fix**: Removed clearing of OAuth storage before connecting to maintain valid tokens across sessions
</Update>

<Update label="v1.13.3" description="January 2026">
  ## Telemetry & Inspector Enhancements
  Patch release with telemetry improvements and inspector URL validation enhancements.

- **Fix**: Enhanced localStorage checks in Telemetry class to verify both existence and functional methods (getItem, setItem, removeItem)
- **Enhancement**: Added error handling to throw exception if localStorage is not available or functional
- **Enhancement**: Inspector now automatically prepends "https://" to URLs without protocol for better user experience
- **Enhancement**: Improved error handling for invalid URLs in Inspector dashboard and server connection modal
- **Enhancement**: Added localStorage clearing functionality in Inspector for troubleshooting
</Update>

<Update label="v1.13.2" description="January 2026">
  ## Dependency Updates & CLI Enhancements
  Minor release with dependency updates and CLI improvements for deployment workflows.

- **Fix**: Updated dependency `hono` to 4.11.4
- **Enhancement**: CLI login command with improved error handling and user feedback
- **Enhancement**: CLI deployment command now prompts for login if not authenticated
- **Enhancement**: Added git uncommitted changes check before deployment
- **Fix**: Removed `fromSource` option from CLI deployment command
- **Enhancement**: Simplified authentication UI in Inspector
</Update>

<Update label="v1.13.1" description="January 2026">
  ## Edge Runtime Fix
  Patch release improving edge runtime compatibility.

- **Fix**: Enable JSON response in stateless mode for edge runtimes (Deno, Cloudflare Workers)
- **Enhancement**: Improved reliability of API in various deployment scenarios
</Update>

<Update label="v1.13.0" description="January 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.13.0&title=Hot%20Module%20Reloading%20%26%20OAuth%20Enhancements&date=2026-01&lang=typescript" alt="Release 1.13.0" />
  </Frame>
  ## Hot Module Reloading & OAuth Enhancements
  Release introducing Hot Module Reloading for development and enhanced OAuth capabilities.

### Hot Module Reloading (HMR)

- **New**: HMR support for `mcp-use dev` command - tools, prompts, and resources update instantly without server restart
- **New**: Connected clients receive `list_changed` notifications and auto-refresh
- **New**: Syntax errors during reload caught gracefully without crashing server
- **New**: Comprehensive test suite for HMR functionality with integration tests
- **Enhancement**: CLI uses `chokidar` to watch file changes with automatic module re-import
- **Enhancement**: Session persistence during HMR - no client disconnections

### OAuth & Client Info

- **New**: Enhanced OAuth proxy to support gateway/proxy scenarios (e.g., Supabase MCP servers)
- **New**: `clientInfo` configuration prop for OAuth registration with client metadata (name, version, icons, website)
- **New**: Server metadata caching with `CachedServerMetadata` interface for instant display on reconnect
- **Enhancement**: OAuth metadata URL rewriting from gateway URLs to actual server URLs
- **Enhancement**: Client info displayed on OAuth consent pages
- **Enhancement**: Extended `StorageProvider` interface with metadata methods

### Inspector & Favicon

- **Enhancement**: Enhanced favicon detector to try all subdomain levels (e.g., mcp.supabase.com → supabase.com)
- **Enhancement**: Detection of default vs custom favicons using JSON API response
- **Enhancement**: Improved logging middleware for API routes
- **Enhancement**: X-Forwarded-Host support for proxy URL construction in dev

### Bug Fixes

- **Fix**: Remove import from "mcp-use" which causes langchain import in server
- **Fix**: Enhanced synchronization for tools, prompts, and resources during HMR
</Update>

<Update label="v1.12.4" description="January 2026">
  ## Connection Fix
  Patch release fixing autoconnect configuration parsing.

- **Fix**: Autoconnect now correctly parses config objects in addition to string URLs
</Update>

<Update label="v1.12.3" description="January 2026">
  ## Security Fixes & OAuth Improvements
  Patch release addressing multiple security vulnerabilities and fixing OAuth flow issues.

### Security Fixes

- **Security**: Fixed 13 vulnerabilities (3 moderate, 10 high)
- **Security**: Updated `langchain` to 1.2.3 (fixes serialization injection vulnerability)
- **Security**: Updated `@langchain/core` to 1.1.8 (fixes serialization injection vulnerability)
- **Security**: Updated `react-router` to 7.12.0 (fixes XSS and CSRF vulnerabilities)
- **Security**: Added override for `qs` to >=6.14.1 (fixes DoS vulnerability)
- **Security**: Added override for `preact` to >=10.28.2 (fixes JSON VNode injection)

### OAuth & Connection Improvements

- **Fix**: Resolved OAuth flow looping issue by removing duplicate fallback logic
- **Enhancement**: Simplified connection handling with consolidated state management
- **Enhancement**: Enhanced OAuth authentication flow with improved connection settings
- **Enhancement**: Improved auto-connect functionality with better proxy handling and error management
- **Enhancement**: Enhanced theme toggling with dropdown menu for better UX and accessibility
</Update>

<Update label="v1.12.2" description="January 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.12.2&title=Automatic%20Proxy%20Fallback%20%26%20API%20Improvements&date=2026-01&lang=typescript" alt="Release 1.12.2" />
  </Frame>
  ## Automatic Proxy Fallback & API Improvements
  Release with automatic proxy fallback, OAuth proxy support, and API naming improvements.

### Breaking Changes (with Deprecation Warnings)

- **Breaking**: Renamed `customHeaders` to `headers` across all APIs for consistency. Old name still works but shows deprecation warnings.
- **Breaking**: Renamed `samplingCallback` to `onSampling` for consistency with event handler patterns. Old name still works but shows deprecation warnings.
- **Deprecated**: `clientConfig` option in favor of deriving configuration from `clientInfo`

### New Features

- **New**: Automatic Proxy Fallback - `autoProxyFallback` option automatically retries failed connections through proxy on CORS/4xx errors
- **New**: Provider-level proxy defaults with `defaultProxyConfig` and `defaultAutoProxyFallback` props in `McpClientProvider`
- **New**: OAuth Proxy Support - `oauthProxyUrl` configuration to route OAuth discovery and token requests through backend proxy
- **New**: Configurable `clientInfo` for MCP connection initialization with full metadata (name, title, version, description, icons, website URL)
- **New**: Reconnect functionality for failed connections with reconnect button in Inspector UI

### Improvements

- **Enhancement**: Better detection of OAuth discovery failures, CORS errors, and connection issues
- **Enhancement**: OAuth provider uses original target URL for discovery, not proxy URL
- **Enhancement**: Improved session cleanup to avoid noisy warning logs
- **Enhancement**: Type safety with deprecation notices in TypeScript types
- **Enhancement**: Proxy header support - `proxyConfig` now accepts a `headers` field for custom headers

### Bug Fixes

- **Fix**: Custom headers now correctly included when copying connection configuration from saved tiles
- **Fix**: HttpConnector automatic reconnection disabled, shifting responsibility to higher-level logic

### Refactoring

- **Refactor**: Removed `oauth-helper.ts` (521 lines), consolidated into `browser-provider.ts`
- **Refactor**: Major `useMcp` hook refactor with automatic retry, better error handling, and proxy fallback support
</Update>

<Update label="v1.12.1" description="January 2026">
  ## Security Update
  Patch release with security fixes and build improvements.

- **Security**: Updated `@modelcontextprotocol/sdk` to 1.25.2 (fixes ReDoS vulnerability in UriTemplate regex patterns)
- **Fix**: Updated building script to correctly export types for inspector/client components
</Update>

<Update label="v1.12.0" description="January 2026">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.12.0&title=Browser%20Compatibility%20%26%20Multi-Server%20Support&date=2026-01&lang=typescript" alt="Release 1.12.0" />
  </Frame>
  ## Browser Compatibility & Multi-Server Support
  Release focusing on browser compatibility, multi-server management, and improved React architecture.

### Breaking Changes

- **Breaking**: Removed `winston` dependency. The logging system now uses a simple console logger that works in both browser and Node.js environments. See [Server Logging](/typescript/server/logging#migration-from-winston) for migration guide.

### Browser Runtime Support

- **New**: Full browser compatibility - removed Node.js-specific dependencies from browser builds
- **New**: Enhanced `browser.ts` entry point with improved browser-specific utilities
- **New**: Browser utilities:
  - `utils/favicon-detector.ts` - Detect and extract favicons from URLs
  - `utils/proxy-config.ts` - Proxy configuration utilities for browser environments
  - `utils/mcpClientUtils.ts` - MCP client utilities moved from client package
- **New**: `MCPAgent` exported for browser usage with `BrowserMCPClient` instance or through `RemoteAgent`
- **Enhancement**: Comprehensive test suite to ensure `mcp-use/react` and `mcp-use/browser` do not import Node.js dependencies

### Multi-Server Support

- **New**: `McpClientProvider` component to manage multiple MCP server connections in React applications
- **New**: Pluggable storage system with `LocalStorageProvider` and `MemoryStorageProvider` for flexible server configuration persistence
- **New**: Dynamic addition and removal of servers in React applications
- **New**: Multi-server React example demonstrating new capabilities
- **Enhancement**: Refactored `useMcp` hook for better multi-server support
- **Enhancement**: Removed obsolete `McpContext` (replaced with `McpClientProvider`)

### Server Middleware

- **New**: MCP Proxy Middleware (`server/middleware/mcp-proxy.ts`) - Hono middleware for proxying MCP server requests with optional authentication and request validation

### Inspector Enhancements

- **Enhancement**: Improved UI responsiveness with enhanced mobile and tablet layouts and adaptive component visibility
- **Enhancement**: Better server management with refactored server connection handling, improved icon display, and status tracking
- **Enhancement**: Enhanced debugging with detailed logging in Layout and useAutoConnect components for better monitoring of server connection states
- **Enhancement**: Simplified connection settings by removing deprecated transport types
- **Enhancement**: Enhanced inspector components for better browser compatibility
- **Enhancement**: Improved server icon support and component interactions
- **Enhancement**: Added embedded mode support
- **Enhancement**: Better configuration handling and MCP proxy integration

### RPC Logging

- **New**: Enhanced RPC logging with new `rpc-logger` module and filtering capabilities to reduce noisy endpoint logging (telemetry, RPC streams). See [Client Logging](/typescript/client/logging) for usage.

### Architecture Improvements

- **Refactor**: Separated telemetry into `telemetry-browser.ts` (browser) and `telemetry-node.ts` (Node.js) for better environment-specific implementations
- **Refactor**: Replaced Winston with `SimpleConsoleLogger` that works across all environments. See [Server Logging](/typescript/server/logging#built-in-logging-system) for configuration details.
- **Refactor**: Updated `tsup.config.ts` to exclude Node.js-specific dependencies (`winston`, `posthog-node`) from browser builds
- **Refactor**: Updated components across inspector for cleaner architecture and imports

### Bug Fixes

- **Fix**: Prevent rendering loop when autoretry is true in React hooks
- **Fix**: Respect options timeout in HTTP connector (reduced default timeout from 30 seconds to 10 seconds)
- **Fix**: Add client SDKs to add to client dropdown in inspector
- **Fix**: Server connection retrieval in `OpenAIComponentRenderer` to directly access connections array
- **Fix**: Linux patch for watch mode
- **Fix**: Query URL handling in built mode to preserve arguments
- **Fix**: Enhanced Zod version mapping in TypeScript PR preview workflow
- **Fix**: Pinned Zod version to 3.24.4 for compatibility with modelcontextprotocol/sdk
- **Fix**: Updated modelcontextprotocol-sdk references to new package name

### Documentation

- **New**: Added troubleshooting section for Zod version conflicts in Supabase deployment
- **Enhancement**: Updated Supabase deployment documentation with improved compatibility information
</Update>

<Update label="v1.11.2" description="December 2025">
  ## Documentation Updates - **Enhancement**: Updated examples and documentation
  to use preferred methods and APIs
</Update>

<Update label="v1.11.1" description="December 2025">
  ## Bug Fixes - **Fix**: Widget props not picked up when using Zod schemas
</Update>

<Update label="v1.11.0" description="December 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.11.0&title=Session%20Management%20Architecture%20%26%20CLI%20Client&date=2025-12&lang=typescript" alt="Release 1.11.0" />
  </Frame>
  ## Session Management Architecture & CLI Client
  Release introducing distributed session management with Redis support and a full-featured CLI client for terminal usage.

### Breaking Changes

- **Breaking**: WebSocket transport support removed. Use streamable HTTP or SSE transports instead.
- **Breaking**: LangChain adapter moved from main entry point to `mcp-use/adapters` subpath. `@langchain/core` and `langchain` are now optional peer dependencies.
- **Deprecated**: `autoCreateSessionOnInvalidId` server config option. Now follows MCP spec strictly (returns 404 for invalid sessions).

### Session Management Features

- **New**: Pluggable session management architecture separating metadata storage (`SessionStore`) from active connections (`StreamManager`)
- **New**: `RedisSessionStore` for persistent, distributed session metadata storage
- **New**: `RedisStreamManager` for cross-server notifications via Redis Pub/Sub
- **New**: `FileSystemSessionStore` (dev mode default) persists sessions to `.mcp-use/sessions.json` for hot reload support
- **New**: `InMemorySessionStore` and `InMemoryStreamManager` (production defaults)
- **New**: Automatic 404 handling and re-initialization in clients per MCP spec
- **New**: Convenience methods: `sendToolsListChanged()`, `sendResourcesListChanged()`, `sendPromptsListChanged()`
- **Enhancement**: Auto-detection of stateless/stateful mode based on client `Accept` header
- **Enhancement**: Sessions survive server restarts in dev mode with filesystem storage
- **Enhancement**: Auto-cleanup of expired sessions (>24 hours)

### CLI Client Features

- **New**: Full-featured CLI client for terminal MCP interactions (`npx mcp-use client`)
- **New**: Scoped commands for tools, resources, prompts, and session management
- **New**: Session persistence to `~/.mcp-use/cli-sessions.json` across terminal sessions
- **New**: Interactive REPL mode for server exploration
- **New**: JSON output mode (`--json`) for scripting and automation
- **New**: Multi-session support with session switching
- **New**: HTTP and stdio server connection support
- **New**: Formatted output with colored tables for human readability
- **New**: Automatic session restoration and reconnection
- **New**: Shell script examples for automation workflows

### Client Improvements

- **New**: Auto-refresh tools/resources/prompts when receiving list change notifications
- **New**: Manual refresh methods: `refreshTools()`, `refreshResources()`, `refreshPrompts()`, `refreshAll()`
- **New**: Automatic 404 handling and re-initialization per MCP spec
- **Enhancement**: Deprecated `sse` transport type in React (use `http` or `auto`)

### Additional Features

- **New**: CommonJS module support - full compatibility with `require()` syntax
- **New**: Favicon support for widget pages with automatic serving and long-term caching
- **New**: Enhanced session methods: `callTool()` defaults args to empty object, new `requireSession()` method
- **New**: Session architecture documentation with ARCHITECTURE.md
- **New**: Comparison guide with other MCP implementations (tmcp, FastMCP, xmcp, official SDK)
- **New**: Comprehensive environments guide (Node.js, Browser, React, CLI)

### Documentation

- **New**: Session Management guide with storage provider documentation (Memory, FileSystem, Redis)
- **New**: CLI Client documentation with usage examples and scripting patterns
- **New**: Environments guide explaining usage across different JavaScript runtimes
- **New**: Comparison documentation analyzing mcp-use vs other implementations
- **Enhancement**: Major documentation restructuring for better organization
- **Enhancement**: Removed/consolidated outdated guides (direct-tool-calls, sandbox, connection-types)
- **Enhancement**: Updated agent documentation with improved examples

### Widget Improvements

- **Enhancement**: Automatic cleanup of stale widget directories in `.mcp-use` folder
- **Enhancement**: Dev mode watches for widget file/directory deletions and cleans up build artifacts
- **Fix**: Fixed widget styling isolation - widgets no longer pick up mcp-use styles
- **Fix**: Fixed favicon URL generator for proper asset resolution
- **Fix**: Fixed transport cleanup when session becomes idle

### Testing & Quality

- **New**: Comprehensive test suite for session stores (498 lines)
- **New**: Stream managers test suite (478 lines)
- **New**: Widget data flow tests (496 lines)
- **New**: CLI integration tests (242 lines)
- **New**: CommonJS compatibility tests (256 lines)
- **New**: Documentation example tests (agent, prompts, tools)
- **New**: Client 404 re-initialization tests
- **Enhancement**: Improved test coverage across all major features

### Dependencies & Compatibility

- **Enhancement**: Added support for Node.js >= 18
- **Enhancement**: CommonJS builds for all entry points
- **Enhancement**: Migrated from `react-router-dom` to `react-router` for better compatibility
- **Enhancement**: Repository metadata added to package.json
- **Enhancement**: Dependency updates and optimizations

### Fixes

- **Fix**: Agent access to resources and prompts
- **Fix**: Import paths in CLI to avoid mixing dependencies
- **Fix**: UUID generation and URL handling improvements
- **Fix**: Various formatting and linting improvements
</Update>

<Update label="v1.10.0" description="December 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.10.0&title=API%20Improvements%20%26%20Session%20Management&date=2025-12&lang=typescript" alt="Release 1.10.0" />
  </Frame>
  ## API Improvements & Session Management
  Enhanced APIs with better type safety and improved session management capabilities.

### Breaking Changes

- **Breaking**: Renamed `createMCPServer()` factory function to `MCPServer` class constructor. Factory function still available for backward compatibility but new code should use `new MCPServer({ name, ... })`.
- **Breaking**: Replaced `session.connector.tools`, `session.connector.callTool()`, etc. with direct session methods: `session.tools`, `session.callTool()`, `session.listResources()`, `session.readResource()`, etc.
- **Breaking**: Standardized OAuth environment variables to `MCP_USE_OAUTH_*` prefix (e.g., `AUTH0_DOMAIN` → `MCP_USE_OAUTH_AUTH0_DOMAIN`).

### New Features

- **New**: Client Capabilities API with `ctx.client.can()` and `ctx.client.capabilities()` to check client capabilities in tool callbacks
- **New**: Session Notifications API with `ctx.sendNotification()` and `ctx.sendNotificationToSession()` for sending notifications from tool callbacks
- **New**: Session Info API with `ctx.session.sessionId` to access current session ID in tool callbacks
- **New**: Resource Template Flat Structure support with `uriTemplate` directly on definition (in addition to nested structure)
- **New**: Resource Template Callback Signatures now support multiple signatures: `()`, `(uri)`, `(uri, params)`, `(uri, params, ctx)`
- **New**: Type Exports for `CallToolResult`, `Tool`, `ToolAnnotations`, `PromptResult`, `GetPromptResult` types

### Improvements

- **Enhancement**: Enhanced type inference for resource template callbacks with better overload support
- **Enhancement**: Server now captures and stores client capabilities during initialization
- **Enhancement**: Added convenience methods to `MCPSession` for all MCP operations (listResources, readResource, subscribeToResource, listPrompts, getPrompt, etc.)
- **Enhancement**: Major documentation refactoring and restructuring for better organization

### Fixes (v1.10.1 - v1.10.6)

- **Fix**: Stateless mode for Deno runtime
- **Fix**: Added CORS support to `getHandler()` method
- **Fix**: Deno 5 compatibility improvements
- **Fix**: Deno 3 compatibility fixes
- **Fix**: Zod error handling improvements
- **Fix**: Zod import in official SDK
- **Fix**: Clear transport when session becomes idle
- **Fix**: Allow agent to access resources and prompts
- **Enhancement**: Added repository metadata in package.json
</Update>

<Update label="v1.9.0" description="December 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.9.0&title=Elicitation%20Support&date=2025-12&lang=typescript" alt="Release 1.9.0" />
  </Frame>
  ## Elicitation Support
  Added comprehensive elicitation support following MCP specification, enabling servers to request user input through clients.

- **New**: Simplified API with `ctx.elicit(message, zodSchema)` and `ctx.elicit(message, url)` with automatic mode detection
- **New**: Form Mode for structured data collection with Zod schema validation and full TypeScript type inference
- **New**: URL Mode to direct users to external URLs for sensitive operations (OAuth, credentials)
- **New**: Server-side validation with automatic Zod validation and clear error messages
- **New**: Client support via `elicitationCallback` to MCPClient and `onElicitation` to React `useMcp` hook
- **Enhancement**: Type-safe return types automatically inferred from Zod schemas
- **Enhancement**: Configurable timeout with 5-minute default for user interactions
- **Fix**: Transport bug fixes
</Update>

<Update label="v1.8.0" description="November 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.8.0&title=Sampling%20Support&date=2025-11&lang=typescript" alt="Release 1.8.0" />
  </Frame>
  ## Sampling Support
  Added sampling support in inspector with improved timeout handling for long-running requests.

- **New**: LLM sampling capabilities in inspector
- **Fix**: Long running sampling requests no longer timeout after 60 seconds
- **Enhancement**: Better handling of extended sampling operations
</Update>

<Update label="v1.7.0" description="November 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.7.0&title=OAuth%20Authentication%20System&date=2025-11&lang=typescript" alt="Release 1.7.0" />
  </Frame>
  ## OAuth Authentication System
  Complete OAuth 2.0 support with built-in providers and enhanced server capabilities.

- **New**: Complete OAuth 2.0 authentication framework with built-in providers (Auth0, WorkOS, Supabase, Keycloak)
- **New**: OAuth middleware and routes for server-side OAuth flow handling with automatic token management
- **New**: OAuth callback component in inspector for authentication flows
- **New**: Context storage with async local storage for request-scoped context in servers
- **New**: Response helpers for standardized HTTP responses and error handling
- **New**: Runtime detection utilities for Node.js, Bun, and Deno environments
- **New**: Server authentication examples for Auth0, WorkOS, and Supabase
- **Enhancement**: Enhanced useMcp hook with improved connection management and OAuth support
- **Enhancement**: Enhanced inspector dashboard with OAuth configuration UI
- **Enhancement**: Better authentication flow handling with OAuth integration
- **Enhancement**: Enhanced HTTP connectors with OAuth token handling
- **Fix**: Dependency optimizations and AI SDK updates
</Update>

<Update label="v1.6.0" description="November 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.6.0&title=Notifications%20%26%20Sampling&date=2025-11&lang=typescript" alt="Release 1.6.0" />
  </Frame>
  ## Notifications & Sampling
  Bidirectional notification support and LLM sampling capabilities.

- **New**: Bidirectional notification support between clients and servers with handler registration
- **New**: LLM sampling allowing MCP tools to request completions from connected clients
- **New**: Widget build ID support for cache busting in widget UI resources
- **New**: Inspector notifications tab with real-time display
- **New**: Server capabilities modal showing supported MCP features
- **Enhancement**: Refactored HTTP transport to reuse sessions across requests with configurable idle timeout
- **Enhancement**: Session management with tracking and automatic cleanup
- **Enhancement**: Roots support in connectors and session API
- **Enhancement**: Session event handling API for notification registration
- **Enhancement**: Server methods for session management and targeted notifications
- **Enhancement**: Enhanced search_tools with metadata (total_tools, namespaces, result_count)
- **Enhancement**: RPC message logging support in inspector
</Update>

<Update label="v1.5.0" description="October 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.5.0&title=OpenAI%20Apps%20SDK%20Integration&date=2025-10&lang=typescript" alt="Release 1.5.0" />
  </Frame>
  ## OpenAI Apps SDK Integration
  Release with comprehensive OpenAI Apps SDK support and widget system.

- **New**: McpUseProvider component combining React setup (StrictMode, ThemeProvider, BrowserRouter, ErrorBoundary)
- **New**: WidgetControls component with debug overlay and view controls (fullscreen, PIP)
- **New**: useWidget hook for type-safe React adapter to OpenAI Apps SDK API
- **New**: ErrorBoundary component for graceful error handling
- **New**: Image component handling data URLs and public file paths
- **New**: ThemeProvider for consistent theme management
- **New**: WidgetInspectorControls for inspector-specific debugging
- **New**: Console proxy toggle for iframe console logs
- **New**: Product search result widget template with carousel and accordion components
- **New**: Folder-based widget support with automatic detection
- **New**: Public folder support for static assets
- **Enhancement**: Enhanced SSR configuration with proper Vite settings
- **Enhancement**: Improved OpenAI component renderer with better height calculation
- **Enhancement**: Enhanced tool result display with multiple content types
- **Enhancement**: Resizable panels with collapse support
- **Enhancement**: Better widget security headers and CSP configuration
</Update>

<Update label="v1.4.0" description="October 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.4.0&title=Code%20Mode&date=2025-10&lang=typescript" alt="Release 1.4.0" />
  </Frame>
  ## Code Mode
  Introduced code execution capabilities for agents.

- **New**: Code Mode feature allowing agents to execute code using MCP tools
- **New**: VMCodeExecutor for local execution environments
- **New**: E2BCodeExecutor for remote execution in cloud sandboxes
- **New**: CodeModeConnector for tool discovery and execution
- **Enhancement**: Enhanced MCPClient with code execution configuration
- **Enhancement**: Comprehensive tests for code execution functionality
</Update>

<Update label="v1.3.0" description="October 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.3.0&title=Edge%20Runtime%20Support&date=2025-10&lang=typescript" alt="Release 1.3.0" />
  </Frame>
  ## Edge Runtime Support
  Migrated to Hono framework for edge runtime compatibility.

- **Major**: Migrated from Express to Hono framework for edge runtime support (Cloudflare Workers, Deno Deploy, Supabase)
- **New**: Runtime detection for Deno and Node.js environments
- **New**: Connect middleware adapter for compatibility
- **New**: `getHandler()` method for edge deployment
- **New**: Supabase deployment documentation and templates
- **Enhancement**: Improved MCPAgent message detection with robust helpers for different LangChain formats
- **Enhancement**: Fixed server base URL handling for proper connection and routing
- **Enhancement**: Better auto-connection logic with error handling and retry mechanisms
- **Enhancement**: Enhanced useMcp hook with improved connection state management
</Update>

<Update label="v1.2.0" description="October 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.2.0&title=LangChain%201.0.0%20Support&date=2025-10&lang=typescript" alt="Release 1.2.0" />
  </Frame>
  ## LangChain 1.0.0 Support
  Updated to support LangChain 1.0.0 with improved compatibility.

- **Major**: Support for LangChain 1.0.0
- **Fix**: Model type compatibility for LangChain 1.0.0
- **Fix**: Apps SDK metadata setup from widget build
- **Enhancement**: Set CLI and inspector as dependencies
</Update>

<Update label="v1.1.0" description="October 2025">
  <Frame>
    <img src="https://mcp-use.com/api/og/release?v=1.1.0&title=Apps%20SDK%20Initial%20Integration&date=2025-10&lang=typescript" alt="Release 1.1.0" />
  </Frame>
  ## Apps SDK Initial Integration
  First integration of OpenAI Apps SDK support.

- **New**: OpenAI Apps SDK integration with UI resource type
- **New**: Enhanced MCP-UI adapter for Apps SDK metadata
- **New**: Resource URI format supporting `ui://widget/` scheme
- **New**: Tool definitions with Apps SDK-specific metadata
- **Enhancement**: Comprehensive test suite for Apps SDK resources
- **Refactor**: Renamed `fn` to `cb` in tool and prompt definitions for consistency
- **Refactor**: Updated resource definitions to use `readCallback`
</Update>
