com.deepfirstsearch/agent-pay-mcp

x402 payments in USDC on Base inside an owner-signed, on-chain budget the model can't change

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": {
    "agent-pay-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@deepfirstsearch/agent-pay-mcp@0.2.1"
      ],
      "env": {
        "AGENT_PAY_BURNER_SEED": "<your AGENT_PAY_BURNER_SEED>",
        "AGENT_PAY_AGENT_KEY": "<your AGENT_PAY_AGENT_KEY>"
      }
    }
  }
}

Environment variables

AGENT_PAY_BURNER_SEEDrequiredsecret32-byte hex secret the per-merchant payer addresses are derived from. Never your owner key.
AGENT_PAY_AGENT_KEYsecretThe budget's agent key (needed when a vault is configured).

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

Category: AI & ML
Version: 0.2.1
Registry: active
Published: 10/9/2026

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