arcade-mcp

Why we included this project

Arcade MCP is a Python framework for building Model Context Protocol servers and the tools that run inside them, and it is the same codebase behind the 7,500 or so prebuilt tools across 81 servers on Arcade.dev. If you need an agent to reach an internal API or a custom OAuth provider, the decorator API lets you turn that integration into a callable tool without writing a server from scratch. The part most teams will care about is authorized tool calling: you declare which OAuth scopes a tool needs, and the framework handles the end-user authorization prompt, token storage, refresh, and per-call scoping, so the client and the LLM never see the secret. It works with any MCP client and agent framework, including LangChain, CrewAI, and OpenAI Agents, and it ships helper classes for common providers like GitHub, Google, Slack, and Notion. There is also a built-in eval command for testing tool-call accuracy against real models, and scaffolded servers run over stdio or HTTP for Claude Desktop, Cursor, or VS Code.