payflowagent-mcp

# 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](https://payflowagent.net)
- **nad.fun intelligence:** [nad.payflowagent.net](https://nad.payflowagent.net)
- **DeFi datafeed:** [data.payflowagent.net](https://data.payflowagent.net)
- **npm:** [`payflowagent-mcp@0.1.3`](https://www.npmjs.com/package/payflowagent-mcp)

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)

```bash
npx -y payflowagent-mcp@0.1.3
```

## Use it in Cursor

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

```json
{
  "mcpServers": {
    "payflowagent": {
      "command": "npx",
      "args": ["-y", "payflowagent-mcp@0.1.3"],
      "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:

```bash
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`](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

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

## Publish to npm

```bash
npm run build
npm publish
```

## License

MIT — see [LICENSE](LICENSE).