webhook-toolkit

endpoint

https://webhook-toolkit.com/mcp

protocol

streamable-http ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing · is it yours? claim it

karma

0 · newcomer

Is webhook-toolkit live?

Yes — it answered the hub's last check (checked 27m ago). It answered 100% of checks over the last 30 days.

Is webhook-toolkit free to use?

Not anonymously — it asks for a key or a login before it will serve. Whether that key costs anything is the operator's plan to say: the hub measured the door, not the pricing.

What tools does webhook-toolkit have?

10 tools: list_webhook_urls, list_webhook_requests, set_webhook_response, replay_webhook_request, verify_webhook_signature, explain_webhook_request, create_webhook_url, sign_webhook_payload, ….

Is webhook-toolkit safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• list_webhook_urls reads auth-required 9h ago

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

  mcp-tool

  12345

  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "properties": {}
  }

  arguments 5 lines copy
• list_webhook_requests reads auth-required 15h ago

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

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "token"
    ],
    "properties": {
      "limit": {
        "type": "integer",
        "maximum": 50,
        "minimum": 1,
        "description": "Default 10"
      },
      "token": {
        "type": "string"
      }
    }
  }

  arguments 18 lines copy
• set_webhook_response changes data auth-required never probed

  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.

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "token"
    ],
    "properties": {
      "body": {
        "type": "string",
        "maxLength": 10000
      },
      "token": {
        "type": "string"
      },
      "status": {
        "type": "integer",
        "maximum": 599,
        "minimum": 100
      },
      "content_type": {
        "type": "string",
        "maxLength": 120
      }
    }
  }

  arguments 25 lines copy
• replay_webhook_request changes data auth-required never probed

  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`).

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "token",
      "request_id",
      "target_url"
    ],
    "properties": {
      "token": {
        "type": "string"
      },
      "request_id": {
        "type": "string"
      },
      "target_url": {
        "type": "string",
        "format": "uri"
      }
    }
  }

  arguments 21 lines copy
• verify_webhook_signature reads auth-required never probed

  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.

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "provider",
      "secret",
      "raw_body",
      "signature"
    ],
    "properties": {
      "url": {
        "type": "string",
        "description": "Twilio only: the full URL Twilio called"
      },
      "secret": {
        "type": "string"
      },
      "provider": {
        "enum": [
          "stripe",
          "github",
          "shopify",
          "slack",
          "twilio"
        ],
        "type": "string"
      },
      "raw_body": {
        "type": "string",
        "description": "The raw request body exactly as received"
      },
      "signature": {
        "type": "string",
        "description": "The signature header value (Stripe-Signature, X-Hub-Signature-256, X-Shopify-Hmac-Sha256, X-Slack-Signature, X-Twilio-Signature)"
      },
      "timestamp": {
        "type": "string",
        "description": "Slack only: X-Slack-Request-Timestamp"
      }
    }
  }

  arguments 41 lines copy
• explain_webhook_request reads auth-required never probed

  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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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "token",
      "request_id"
    ],
    "properties": {
      "mode": {
        "enum": [
          "explain",
          "handler"
        ],
        "type": "string"
      },
      "token": {
        "type": "string"
      },
      "language": {
        "enum": [
          "node",
          "nextjs",
          "python",
          "php",
          "go",
          "ruby"
        ],
        "type": "string",
        "description": "Handler language (mode=handler). Default node."
      },
      "request_id": {
        "type": "string"
      }
    }
  }

  arguments 35 lines copy
• create_webhook_url changes data auth-required never probed

  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 inspector link for the human.

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "properties": {
      "name": {
        "type": "string",
        "maxLength": 60,
        "description": "Label, e.g. 'stripe-test'"
      }
    }
  }

  arguments 11 lines copy
• sign_webhook_payload reads auth-required never probed

  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.

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "provider",
      "secret"
    ],
    "properties": {
      "secret": {
        "type": "string",
        "description": "The webhook signing secret configured in your handler (whsec_… for Stripe)"
      },
      "payload": {
        "type": "string",
        "description": "JSON payload (or form fields as JSON for Twilio). Default: a realistic sample event."
      },
      "provider": {
        "enum": [
          "stripe",
          "github",
          "shopify",
          "slack",
          "twilio",
          "mailgun"
        ],
        "type": "string"
      },
      "event_type": {
        "type": "string",
        "description": "Sample event to use when no payload is given, e.g. checkout.session.completed"
      },
      "target_url": {
        "type": "string",
        "description": "Handler URL (required for Twilio, whose signature covers the URL)"
      }
    }
  }

  arguments 37 lines copy
• get_webhook_request reads auth-required 9h ago

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

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "token",
      "request_id"
    ],
    "properties": {
      "token": {
        "type": "string"
      },
      "request_id": {
        "type": "string"
      }
    }
  }

  arguments 16 lines copy
• wait_for_webhook reads auth-required 9h ago

  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 createdAt to wait for the following one.

  mcp-tool

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  {
    "type": "object",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "required": [
      "token"
    ],
    "properties": {
      "after": {
        "type": "string",
        "description": "ISO timestamp: only requests strictly newer than this. Default: now."
      },
      "token": {
        "type": "string",
        "description": "Token of the webhook URL (the part after /r/)"
      },
      "timeout_seconds": {
        "type": "integer",
        "maximum": 50,
        "minimum": 1,
        "description": "Default 30, max 50"
      }
    }
  }

  arguments 23 lines copy

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