About hookjar

Hookjar is a webhook capture service for developers. Generate a URL, point any service at it, inspect what was actually sent — method, headers, body, query.

Who it's for

Developers integrating with Stripe, GitHub, Twilio, Shopify, Slack, or any service that sends webhooks. Also useful as an inspector behind your own server while you build the receiver. And it's first-class for AI agents that need a callback URL during a task (see /llms.txt).

What you can do

• Capture any HTTP method, headers, body up to 1 MiB.
• Inspect everything in the browser, with JSON pretty-printing.
• Configure a custom response: status code, body, headers, delay up to 5 seconds, 30x redirect. Useful for testing your receiver's retry and timeout logic.
• Get a memorable URL with a custom slug instead of a random id.
• Password-protect the inspection page while keeping the capture endpoint open.
• Replay a captured request to a target URL (server-side), or copy it as a curl command and replay it locally.
• Read everything programmatically via the JSON API (no tokens, no signup).

Where it runs

EU — Germany. Behind Cloudflare for TLS, DDoS shield, and a healthy edge cache. No backups in this version — treat captures as ephemeral.

Pricing

Free. Every feature on this site is on the free tier. When paid plans exist, they'll raise volume limits — no feature is locked behind a paywall.

Compare

Side-by-side comparison against other webhook capture services: vs webhook.site, vs RequestBin (Pipedream), vs Beeceptor.

Contact

Bugs, feature requests, abuse: [email protected].

Hookjar is v0 — no accounts, no live tail, no search. Those features may land later based on what users actually ask for. Watch the llms.txt + /openapi.json for the machine-readable view.