MCP工具库

Installation

For reproducible downstream RC testing:

defp deps do
  [{:arbor_mcp, "== 2.0.0-rc.5"}]
end

Run mix deps.get. ArborRPC resolves transitively from Hex; add ArborACP or its optional adapter bundle only when your application uses them. The original 2.0.0-rc.1 candidate is retired, with its tag and archive preserved.

For development, clone the default branch and resolve dependencies normally:

git clone https://github.com/trust-arbor/arbor_mcp.git
cd arbor_mcp
mix deps.get
mix compile
mix test

ARBOR_RPC_PATH optionally selects a local ArborRPC checkout. See the development guide for local source overrides and releasing for package checks without those overrides.

The supported minimum is Elixir 1.17 with Erlang/OTP 27. Protocol output uses OTP's JSON encoder. The CI matrix checks multiple Elixir/OTP versions; passing CI and the release gates are required before publishing 2.0.

On macOS/Darwin and Linux, installing the transitive arbor_rpc source package requires a C17 compiler (cc, or the executable selected by CC), including for HTTP-only and BEAM-only applications. Source archives contain reviewed C source, not prebuilt helpers. An installed release includes the built helper and needs no runtime compiler. Windows native subprocess operations are unsupported; framing is separate. Only the qualified platform/architecture matrix is supported.

Client example

{:ok, client} =
  Arbor.MCP.Client.start_link(
    transport: :stdio,
    command: ["mcp-server"],
    protocol_mode: :prefer_modern
  )

{:ok, tools} = Arbor.MCP.Client.list_tools(client, format: :map)
{:ok, result} = Arbor.MCP.Client.call_tool(client, "echo", %{"message" => "hello"}, format: :map)
Arbor.MCP.Client.stop(client)

The latest stable MCP revision is 2026-07-28. :prefer_modern allows evidence-based fallback to the legacy protocol era; :modern_only and :legacy_only select an era explicitly. Library version 2 and the MCP wire revision are separate version identifiers.

Guides and examples

• Migrate from v1 to v2
• Version 2 release candidate
• Quickstart
• User guide
• Phoenix mounting
• Server DSL
• Runtime operations
• Configuration
• Security
• Examples
• Development
• Troubleshooting
• Changelog

Published 1.x API documentation is available at hexdocs.pm/ex_mcp. It describes the previous package and namespace. The v2 migration guide is available in this checkout and is included in the package and ExDoc documentation.

For v2 API documentation from the checkout, run mix docs --warnings-as-errors after fetching development dependencies. The original RC API docs are at hexdocs.pm/arbor_mcp/2.0.0-rc.1. The current RC API docs are at hexdocs.pm/arbor_mcp/2.0.0-rc.5. The documentation index separates guides, contributor checks and release policy.