Mcp Server

dev.true402/mcp-server · v1.3.2

Pay-per-call AI + web + on-chain tools over x402 (USDC on Base): LLM, SEO, extract, token safety.

Website Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add mcp-server -e WALLET_PRIVATE_KEY=<WALLET_PRIVATE_KEY> -e SERVER_URL=<SERVER_URL> -e MAX_PAYMENT_USDC=<MAX_PAYMENT_USDC> -- npx -y @true402.dev/[email protected]

claude_desktop_config.json

{
  "mcpServers": {
    "mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@true402.dev/[email protected]"
      ],
      "env": {
        "WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>",
        "SERVER_URL": "<SERVER_URL>",
        "MAX_PAYMENT_USDC": "<MAX_PAYMENT_USDC>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@true402.dev/[email protected]"
      ],
      "env": {
        "WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>",
        "SERVER_URL": "<SERVER_URL>",
        "MAX_PAYMENT_USDC": "<MAX_PAYMENT_USDC>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@true402.dev/[email protected]"
      ],
      "env": {
        "WALLET_PRIVATE_KEY": "<WALLET_PRIVATE_KEY>",
        "SERVER_URL": "<SERVER_URL>",
        "MAX_PAYMENT_USDC": "<MAX_PAYMENT_USDC>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Name	Description
`WALLET_PRIVATE_KEY` Optional, secret	Funded Base wallet private key for x402 payment signing (optional; without it, paid tools return the 402 requirements).
`SERVER_URL` Optional	true402 API base (default https://true402.dev/api). Must be https (or localhost) — the signer refuses to send a payment over cleartext.
`MAX_PAYMENT_USDC` Optional	Client-side per-call spend ceiling in USDC (default 0.10). The signer refuses to auto-pay a 402 whose amount exceeds this — protects the wallet from a hostile endpoint.

Details

Package	`@true402.dev/[email protected]` (NPM, stdio)
First published	25 Oct 2026
Last updated	25 Oct 2026
Registry name	`dev.true402/mcp-server`

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Live status

Local install

Installed and run on your own machine, so there is no public endpoint to check.

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