Payflowagent MCP Server

by coinlooterio.github.Coinlooter/mcpv0.1.6

MCP server for PayFlowAgent — free & pay-per-call (x402/USDC): nad.fun, DeFi yields, web enrich, Base trust.

0Node.jsstdioofficial registry

context tax

queued

security

queued

cold start

queued

freshness

Maintained2mo ago

Install Payflowagent MCP server

claude mcp add payflowagent -e X402_BUYER_PRIVATE_KEY='<x402-buyer-private-key>' -- npx -y payflowagent-mcp

{
  "mcpServers": {
    "payflowagent": {
      "command": "npx",
      "args": [
        "-y",
        "payflowagent-mcp"
      ],
      "env": {
        "X402_BUYER_PRIVATE_KEY": "<x402-buyer-private-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "payflowagent": {
      "command": "npx",
      "args": [
        "-y",
        "payflowagent-mcp"
      ],
      "env": {
        "X402_BUYER_PRIVATE_KEY": "<x402-buyer-private-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "payflowagent": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "payflowagent-mcp"
      ],
      "env": {
        "X402_BUYER_PRIVATE_KEY": "<x402-buyer-private-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "payflowagent": {
      "command": "npx",
      "args": [
        "-y",
        "payflowagent-mcp"
      ],
      "env": {
        "X402_BUYER_PRIVATE_KEY": "<x402-buyer-private-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
X402_BUYER_PRIVATE_KEY	—	yes	Private key of a dedicated payer wallet (Base, USDC) used to auto-pay x402 calls. Without it, only free tools work.
PAYFLOWAGENT_API_BASE	—	—	Base URL of the nad.fun API (default https://nad.payflowagent.net).
PAYFLOWAGENT_DATAFEED_BASE	—	—	Base URL of the Datafeed API (default https://data.payflowagent.net).
PAYFLOWAGENT_ENRICH_BASE	—	—	Base URL of the Enrich API (default https://enrich.payflowagent.net).
PAYFLOWAGENT_TRUST_BASE	—	—	Base URL of the Trust API (default https://trust.payflowagent.net).
X402_BUYER_RPC	—	—	Optional payment RPC endpoint (Base mainnet by default).

Freshness

Maintained — last maintenance signal 2mo ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-07-03 · 3mo ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-07-27 · 2mo ago · official registry · v0.1.6

FAQ

›How do I install the Payflowagent MCP server in Claude Code?

Run: claude mcp add payflowagent -e X402_BUYER_PRIVATE_KEY='<x402-buyer-private-key>' -- npx -y payflowagent-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Payflowagent require an API key?

Yes. It expects X402_BUYER_PRIVATE_KEY, of which 1 is a secret.

›Can I use Payflowagent as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Payflowagent in the official MCP registry?

Yes, as io.github.Coinlooter/mcp.