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Grok Webhook Toolkit wait_for_webhook

How to: Grok Webhook Toolkit wait_for_webhook

client:Grok transport:streamable-http tool:wait_for_webhook

Add Webhook Toolkit to Grok

  1. 01

    Open .mcp.json (in your project root) and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "webhook-toolkit": {
      "type": "http",
      "url": "https://webhook-toolkit.com/mcp"
    }
  }
}
  1. 02

    Save the file and restart Grok.

  2. 03

    Ask for something wait_for_webhook does. Grok lists the server's tools on connect and calls wait_for_webhook itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that Webhook Toolkit's identifier in your config matches the one above exactly.

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

Set these first

Webhook Toolkit will not start until these are set, so wait_for_webhook never becomes available.

  • WEBHOOK_TOOLKIT_KEY

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.