Preflight Checks (x402)

io.github.josediegorobles/preflight-checks

Deterministic pre-execution verification tools for AI agents with x402 USDC pay-per-call on Base

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": {
    "preflight-checks": {
      "command": "npx",
      "args": [
        "-y",
        "@joserobles/preflight-mcp@0.4.0"
      ],
      "env": {
        "PREFLIGHT_BUYER_PRIVATE_KEY": "<your PREFLIGHT_BUYER_PRIVATE_KEY>"
      }
    }
  }
}
Environment variables
  • PREFLIGHT_BUYER_PRIVATE_KEYrequiredsecretPrivate key of a Base wallet holding USDC, used to pay each call via x402 (0.05 USDC per check).

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

Category
Developer Tools
Version
0.4.1
Registry
active
Published
10/16/2026
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Preflight Checks (x402) — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-josediegorobles-preflight-checks?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="Preflight Checks (x402) — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![Preflight Checks (x402) — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-josediegorobles-preflight-checks?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.