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Penny x402 utilities for Grok

io.github.pennyops/penny-x402-utils

Pay-per-call dev utilities (hash, base64, uuid, URL, time, NIP-19, BOLT11) via x402 USDC on Base.

client:Grok transport:streamable-http tools:8

Install Penny x402 utilities in Grok

.mcp.json (in your project root)

{
  "mcpServers": {
    "penny-x402-utils": {
      "type": "http",
      "url": "https://pennyagent.pythonanywhere.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

Penny x402 utilities in other clients