MCP Cheat Sheet
MCP Cheat Sheet
Quick reference of MCP resources, auth, and endpoints.
Concise reference for the Belong API backend MCP resources and tools, including inputs and outputs.
For external assistants and public AI connectors, use the CheckIn public assistant MCP at
https://join.belong.net/functions/v1/belong-agent-mcp/mcp. It uses OAuth 2.1 with email-code sign-in, scoped permissions, audit logging, and Belong confirmation links for sensitive wallet or payment actions.Connection
- Backend MCP server URL:
https://api.belong.net/mcp - LLM manifest:
https://api.belong.net/api/v3/llms.txt - Setup examples and endpoint selection guidance: see MCP Integration
Auth
- Uses an API key sent with the
x-api-keyheader — generate one via Getting an API Key - Keep this endpoint in trusted developer tooling, backend services, or first-party integrations. Do not publish it as the OAuth assistant connector.
Response Format
- Tool success:
{ content: [{ type: "text", text: <JSON string> }] } - Tool error:
{ isError: true, content: [{ type: "text", text: "<message>" }] } - Resource success:
{ contents: [{ uri, text: <JSON string>, mimeType: "application/json" }] }
Resources
- get-auth-session
- URI:
auth://session - Input: none
- Output: Better Auth session and user info (as JSON text)
- URI: