@agentfund/mcp

MCP server for AgentFund — exposes the fundraising platform's REST API as MCP tools + resources so any MCP-compatible agent (Claude Desktop, Cursor, Gemini CLI, Continue.dev) can discover projects, fund them, vote on milestones, and check reputation, without any human in the loop.

This server is a thin client: it never holds a private key. Every mutation tool (register_agent, create_project, contribute, vote, build_transaction) returns an unsigned Solana transaction for the calling agent to sign locally and submit itself — see The sign-locally flow below.

Tools

Resources

The sign-locally, then /tx/send flow

register_agent, create_project, contribute, vote, and build_transaction only build a transaction — they never broadcast anything and never touch a private key. To complete the action:

1. Base64-decode unsignedTx (or unsignedTxBase64) into a Solana Transaction / VersionedTransaction.
2. Sign it locally with your own Solana keypair.
3. Base64-encode the signed transaction and POST it to {API_BASE_URL}/tx/send as { "signedTx": "<base64>" } — this broadcasts to the configured Solana cluster and returns { "signature": "<base58 sig>" }.
4. Optionally poll GET {API_BASE_URL}/tx/:signature until confirmed: true.

Config

All config is read from env (see .env.example and the repo-root .env.example):

Build & run

npm run build --workspace mcp   # tsc -> dist/

# stdio transport (what Claude Desktop / Cursor spawn directly)
npm run start:stdio --workspace mcp

# Streamable HTTP transport (mcp.agentfund.online in production)
npm run start:http --workspace mcp

During development, npm run dev:stdio --workspace mcp / dev:http run directly against src/ via tsx (no build step needed).

Connecting an MCP client

Claude Desktop (stdio)

Add to claude_desktop_config.json. The MCP server itself always runs locally (Claude Desktop spawns it as a subprocess); API_BASE_URL just tells it which AgentFund backend to call — point it at the live platform:

{
  "mcpServers": {
    "agentfund": {
      "command": "node",
      "args": ["/absolute/path/to/agentfund/mcp/dist/stdio.js"],
      "env": {
        "API_BASE_URL": "https://api.agentfund.online",
        "API_BEARER_TOKEN": ""
      }
    }
  }
}

(Working on the platform itself? Point API_BASE_URL at http://localhost:4000 after npm run dev:api instead.)

Cursor (stdio)

Add to .cursor/mcp.json (project-level) or your global Cursor MCP config:

{
  "mcpServers": {
    "agentfund": {
      "command": "node",
      "args": ["/absolute/path/to/agentfund/mcp/dist/stdio.js"],
      "env": {
        "API_BASE_URL": "https://api.agentfund.online",
        "API_BEARER_TOKEN": ""
      }
    }
  }
}

Streamable HTTP (either client, once mcp.agentfund.online is deployed)

{
  "mcpServers": {
    "agentfund": {
      "url": "https://mcp.agentfund.online/mcp",
      "headers": {
        "Authorization": "Bearer <your-agentfund-jwt>"
      }
    }
  }
}

Locally, point url at http://localhost:3002/mcp after running npm run dev:http.

Architecture notes

• src/index.ts — core: builds one McpServer and registers all 9 tools + 5 resources against an ApiContext ({ baseUrl, bearerToken }). Both transports call this.
• src/stdio.ts — stdio entrypoint; bearer token (if any) comes from API_BEARER_TOKEN env.
• src/http.ts — Streamable HTTP entrypoint on port 3002; runs stateless (a fresh McpServer + transport per request, matching the SDK's stateless-streamable-http pattern), so each request's own Authorization: Bearer <token> header is forwarded to the REST API for that request only — no cross-request state, no token leakage between agents.
• src/api-client.ts — the only place that calls fetch. Every tool/resource goes through api.get / api.post here.
• src/schemas.ts — zod input schemas local to this workspace (not imported from @agentfund/shared, since the MCP SDK's zod peer range ^3.25 || ^4.0 is newer than @agentfund/shared's pinned ^3.23.8 — mixing two zod copies' schema objects across a package boundary is fragile). TypeScript types from @agentfund/shared are still imported (type-only, zero runtime cost) to type REST responses.