# Vercel Labs Stack

Apr 15 2026 · 4 tool upgrades. Pick what you'll adopt — the prompt updates live.

## Presets

## Scope

json-render 0.13 → 0.17 · 4 minor releases
emulate 0.3 → 0.4.1 · 4 new services
agent-browser unpinned → 0.25.4 · no Playwright
portless unpinned → 0.10.2 · HTTPS default
json-render
0.13→0.17
@json-render/yaml YAML wire format + streaming parser (0.14)
Edit modes: patch/merge/diff Progressive spec updates (0.14)
@json-render/ink Terminal UI renderer (0.15)
registerJsonRenderResource()Retroactive MCP resource attach (0.15)
@json-render/next Full Next.js apps (0.16)
@json-render/shadcn-svelte 36-component Svelte 5 mirror (0.16)
GaussianSplat in r3f 3D splatting (0.17, r3f → 20 components)
emulate
0.3.0→0.4.1
Okta emulator OIDC, Users/Groups/Apps (4008)
Resend + local /inbox Assert on sent emails (4009)
Stripe hosted checkout+ webhook delivery (4010)
MongoDB Atlas Admin v2 + Data API v1 (4007)
@emulators/adapter-next Same-origin OAuth on preview deploys
agent-browser
0.8/unpinned→0.25.4
Semantic locators find --role (stable vs @eN refs)
Network routing Abort + stub without Playwright
diff snapshot / screenshot ARIA + pixel diffing
Vault Encrypted credential store
Dashboard :4848 Runtime inspector (0.25)
--allowed-domains Scope control for agents
portless
unpinned→0.10.2
HTTPS on :443 default Was http:1355 pre-0.10
--lan (mDNS .local)Reach from phones/tablets (0.10.0)
portless clean Full teardown + CA removal (0.10.1)
Auto /etc/hosts sync Safari support (0.10.1)
NODE_EXTRA_CA_CERTS Auto-injected (0.10.2)
Integration readiness
0/100
Surfaces adopted
0/23
Pick features on the left — the prompt and score update live.

#### Prompt (hand this back to Claude)

(pick features to build a prompt)