verify402

io.github.a32116150-ctrl/verify402-mcp

Free x402 preflight gate plus paid on-chain truth checks for AI agents.

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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": {
    "verify402-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "verify402-mcp@1.0.9"
      ],
      "env": {
        "EVM_PRIVATE_KEY": "<your EVM_PRIVATE_KEY>",
        "VERIFY402_NETWORKS": "eip155:84532"
      }
    }
  }
}
Environment variables
  • EVM_PRIVATE_KEYsecretPrivate key for a dedicated hot wallet. Omit for the free preflight_gate only. verify402-mcp@1.0.9 (this published release) defaults paid calls to Base Sepolia testnet (eip155:84532) for the public demo. Base mainnet (eip155:8453) is an explicit opt-in for a separate deployment and is not enabled by this release. Fund only Base Sepolia testnet USDC for the demo. Never use a main wallet.
  • VERIFY402_NETWORKSComma-separated EVM payment networks for paid calls. Default Base Sepolia testnet (eip155:84532); set eip155:8453 explicitly for Base mainnet. The supported network-to-canonical-asset map is constrained to Base Sepolia and Base mainnet.

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

Category
Developer Tools
Version
1.0.9
Registry
active
Published
10/26/2026

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