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mcp/harbor
Grok

x402 Preflight for Grok

io.github.chico10117/x402-preflight

Inspect and validate an x402 endpoint before an autonomous agent spends USDC.

client:Grok transport:streamable-http tools:3

Install x402 Preflight in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "x402-preflight": {
      "type": "http",
      "url": "https://x402.chikocorp.com/mcp"
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

What Grok can do once it is connected

x402 Preflight in other clients

x402 Preflight MCP server