io.github.stevemilton/x402-payagent-mcp

io.github.stevemilton/x402-payagent-mcp

Pay x402 APIs in USDC on Base, Solana, and BNB Chain with spend mandates, receipts, idempotency.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "x402-payagent-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@arispay/payagent-mcp@4.1.0"
      ],
      "env": {
        "ARISPAY_API_KEY": "<your ARISPAY_API_KEY>",
        "PAYAGENT_PRIVATE_KEY": "<your PAYAGENT_PRIVATE_KEY>"
      }
    }
  }
}
Environment variables
  • ARISPAY_API_KEYsecretArisPay developer API key (ap_live_… / ap_test_…). Optional — the setup tool can self-provision one from just an email, or set PAYAGENT_PRIVATE_KEY to sign locally with no account.
  • PAYAGENT_PRIVATE_KEYsecretEVM private key for permissionless local signing (zero-signup mode): pay signs x402 payments with it directly — no ArisPay account needed. Generate one with `npx payagent wallet new`. Never sent to any server.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
4.1.0
Registry
active
Published
8/27/2026

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