Hooklistener

Overview

Hooklistener is a Webhook debugging tool available on Web, macOS, Linux, and Windows. It serves both developers and AI coding assistants (such as Claude Code, Cursor, and Codex), using an MCP server or CLI to let AI agents automatically capture, inspect, and replay Webhooks. ### Key Capabilities - **MCP Server**: Offers 46 tools covering endpoint management, request reading, replay, monitoring, and inboxes. Once connected, AI coding assistants can operate directly inside the editor without opening a browser. - **Debug Endpoints**: Generates unique HTTPS endpoints that fully log HTTP methods, headers, bodies, query parameters, cookies, and IPs. Supports custom response status codes (100–599) to test retry logic, and lets you replay requests to production, staging, or local environments. - **Monitors**: Watches endpoints for silence, with timeout thresholds from 1 minute to 24 hours. Sends alerts via Email or Slack when Webhooks stop arriving, with cooldowns to prevent duplicate notifications. - **Email Inboxes**: Creates `@hookinbox.com` addresses that convert incoming emails (including text, HTML, headers, and attachments) into HTTP requests forwarded to a specified endpoint, supporting multi-endpoint fan-out and automatic retries. - **CLI**: Tunnels live Webhook traffic to localhost with a single command. Uses device-code login over WebSocket, works behind firewalls and NAT, and can be invoked by AI agents or CI scripts. ### Use Cases Ideal for developers and teams debugging third-party integrations (like Stripe, GitHub, Shopify), monitoring Webhook delivery, converting emails to Webhooks, and receiving Webhooks locally. All features are accessible via the Dashboard, MCP, or CLI, with consistent data across interfaces. Free to get started—no credit card required.

Q&A

Which AI coding assistants does Hooklistener support?AI-generated

It supports Claude Code, Cursor, Codex, and any compatible MCP client via MCP.

How do I install and use the CLI?AI-generated

Install it with npm install -g hooklistener. Log in using a device code (no need to paste an API key), then run the tunnel command to forward traffic to your local port.

What information do Debug Endpoints record?AI-generated

They fully log the HTTP method, headers, body, query parameters, cookies, and IP address of each request.

What timeout thresholds can I set for Monitors?AI-generated

Timeout thresholds range from 1 minute to 24 hours.

What parts of an email can Email Inboxes forward?AI-generated

They capture the full text, HTML, headers, and attachments of an email and forward them as an HTTP request.

Do I need a credit card to use Hooklistener?AI-generated

No. Sign up is free, and you can start using it without a credit card.