⚡ Live updates
Requests appear instantly over WebSocket. Inspect formatted headers, query parameters, and bodies.
See webhooks
as they arrive.
Hookbako is a webhook testing tool. Create a receiving URL and register it with the sender to see incoming headers, query parameters, bodies, and event summaries instantly. Signature verification also runs in your browser.
By creating a receiving URL, you agree to the Terms of use and Privacy policy.
LINEStripeShopifyGitHub
SlackmakeshopkintoneStandard Webhooks
🔒 Verify signatures in your browser
Verify authenticity without sending channel secrets or whsec_ secrets to the server.
🧩 Types and replay commands
Generate TypeScript types from JSON and copy a curl command to replay the request to your local server.
How to use
- Create a receiving URL.Press the button above to open your inbox. Bookmark the viewing URL (including its key) to return later.
- Register it with the sender.Paste the receiving URL into the Webhook URL in LINE Developers, a Stripe endpoint, the GitHub Payload URL, or similar. Append any path you like (e.g.
/callback）。 - Inspect incoming requests.Select a request to see its body, headers, signature verification, and replay commands together.
New to webhooks? Start with Getting started with Hookbako (no webhook experience needed). For provider-specific checks and an explanation of signatures, see How to verify webhook signatures.
Frequently asked questions
Do I need to register or sign in?
No. Press the button to instantly create a receiving URL and a viewing URL. The viewing URL contains a key, so keep it safe.
How long is received data kept?
The inbox and its contents are automatically deleted 7 days after creation. Up to the latest 100 requests are stored, with up to 256KB of body per request.
Is it safe to enter a secret for signature verification?
Secrets are used only in your browser and are never sent to the server. Verification runs using the browser Web Crypto API.
Which webhooks are supported?
HTTP requests from any source are accepted. LINE, Stripe, Shopify, GitHub, Slack, makeshop, kintone, and Standard Webhooks (including Svix and Resend) are detected and summarized automatically, with signature verification where supported.Bodies encoded in Shift_JIS or EUC-JP can also be read.
Can I replay a request to my local server?
Hookbako generates curl commands and fetch code to reproduce requests, so you can replay them from your own device to localhost or another destination. The Hookbako server never forwards requests to other URLs.