io.github.stevemilton/x402-payagent-mcp MCP Server

io.github.stevemilton/x402-payagent-mcp

Repository Registry

What is the io.github.stevemilton/x402-payagent-mcp MCP server?

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

How to install io.github.stevemilton/x402-payagent-mcp

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

ARISPAY_API_KEY
secret
ArisPay 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_KEY
secret
EVM 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.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "x402-payagent-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@arispay/payagent-mcp"
      ],
      "env": {
        "ARISPAY_API_KEY": "<YOUR_ARISPAY_API_KEY>",
        "PAYAGENT_PRIVATE_KEY": "<YOUR_PAYAGENT_PRIVATE_KEY>"
      }
    }
  }
}

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