PayFlowAgent — MCP server & reference agent

Pay-per-call APIs for autonomous AI agents. USDC via x402, no signup.

MCP registry name: io.github.Coinlooter/mcp

• Hub (catalog): payflowagent.net
• nad.fun intelligence: nad.payflowagent.net
• DeFi datafeed: data.payflowagent.net
• npm: [email protected]

This repository contains the open-source integration pieces:

| Path | What | |------|------| | / (root) | payflowagent-mcp — MCP server for Cursor, Claude Desktop, and custom agents. | | examples/screen-bot/ | Reference polling bot: finds high-score nad.fun tokens every few minutes. |

The scoring APIs run on PayFlowAgent infrastructure; this repo is the client surface so agents and developers can integrate in one step.

Tools (MCP)

nad.fun (Monad)

| Tool | Price | Description | |------|-------|-------------| | score_token | free | 0–100 score, riskLevel, action (rate-limited). | | decide_token | x402 | Full report: factors, graduation, momentum. | | token_summary | x402 | Graduation progress + momentum (cheap entry). | | screen_tokens | x402 | Ranked list of pre-scored fresh tokens. |

Datafeed (DeFiLlama)

| Tool | Price | Description | |------|-------|-------------| | sample_yields | free | Top yield pools + 3-item opportunity preview (score + reasons). | | yield_opportunities | x402 | Ranked yield picks with risk score & explainable reasons. |

Install (one line)

npx -y [email protected]

Use it in Cursor

~/.cursor/mcp.json (or project .cursor/mcp.json):

{
  "mcpServers": {
    "payflowagent": {
      "command": "npx",
      "args": ["-y", "[email protected]"],
      "env": {
        "PAYFLOWAGENT_API_BASE": "https://nad.payflowagent.net",
        "PAYFLOWAGENT_DATAFEED_BASE": "https://data.payflowagent.net"
      }
    }
  }
}

Use it in Claude Desktop

Same config as Cursor (Settings → Developer → MCP Servers).

Without X402_BUYER_PRIVATE_KEY only free tools work (score_token, sample_yields). Use a dedicated payer wallet (Base, USDC) — never your main wallet.

Configuration (env)

| Variable | Default | Purpose | |----------|---------|---------| | PAYFLOWAGENT_API_BASE | https://nad.payflowagent.net | nad.fun API base URL. | | PAYFLOWAGENT_DATAFEED_BASE | https://data.payflowagent.net | Datafeed API base URL. | | X402_BUYER_PRIVATE_KEY | — | Payer wallet key (Base, USDC). Enables paid tools. | | X402_BUYER_RPC | https://mainnet.base.org | Payment RPC (optional). |

MCP Registry

After npm publish, list in the official registry:

npm install -g @modelcontextprotocol/publisher
cd payflowagent-mcp
mcp-publisher login github
mcp-publisher publish

Manifest: server.json (io.github.Coinlooter/mcp).

Reference agent

See examples/screen-bot — polls /v1/screen every few minutes, de-duplicates, and alerts on new high-score tokens (optional webhook). Fork it and point it at your own trading logic.

Develop locally

npm install
npm run typecheck
npm run build      # emits dist/
npm start          # stdio server from source (tsx)

Publish to npm

npm run build
npm publish

License

MIT — see LICENSE.