Webhook Toolkit

Last 30 days

Uptime

100%

Response time

262 ms typical, 262 ms slowest 5%

Last check

6 h ago

Next check

any minute now

How to call it

Add it to any MCP client that supports remote servers.

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

10 tools

• create_webhook_url

  Create a public HTTPS URL that captures every request sent to it (any method, any sub-path). Use it when you need an endpoint to receive a webhook from a third-party service while building or debugging an integration. Returns the URL to configure in the service and a live inspect

• list_webhook_urls

  List the webhook URLs of the account behind the API key (requires an API key).

• wait_for_webhook

  Block until the next request reaches a webhook URL (or the timeout elapses), then return it in full: method, path, headers, body, detected provider and event. Use right after triggering an action that should send a webhook. Call again with `after` set to the last request's create

• list_webhook_requests

  List the most recent requests captured by a webhook URL, newest first (summaries; use get_webhook_request for one full request).

• get_webhook_request

  Return one captured request in full (headers, raw body, detected provider/event).

• set_webhook_response

  Choose what the webhook URL answers to callers (status code, body, content type) — e.g. return 500 to test the sender's retries, or a specific JSON/XML body the service expects.

• replay_webhook_request

  Re-send a captured request (same method, headers and raw body) to a PUBLIC URL and return the target's response. Localhost and private IPs are refused here: for localhost use the CLI (`npx webhook-toolkit replay`) or the local MCP server (`npx webhook-toolkit mcp`).

• sign_webhook_payload

  Build a webhook body with a VALID signature header for a provider, to test a handler's signature verification without triggering a real event. Providers: stripe, github, shopify, slack, twilio, mailgun. Returns the headers, the exact body to send and a ready-to-run curl command.

• verify_webhook_signature

  Check whether a webhook signature is valid for a raw body and a secret, and diagnose why it fails (wrong secret, whitespace, re-serialized JSON body, expired timestamp, wrong URL for Twilio). Providers: stripe, github, shopify, slack, twilio.

• explain_webhook_request

  AI analysis of a captured request. mode=explain: who sent it, which event, key fields, how to verify the signature, pitfalls. mode=handler: complete receiving code that verifies the signature and handles this event. Included in paid plans; anonymous and free users get 3 trials.

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