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Free webhook tester. Get a webhook URL in one click, capture and inspect webhooks, test Stripe, GitHub, Shopify or Slack webhooks, forward them to localhost and script the reply. Open source.
I'm Sarath, and I built Testhooks because testing webhooks kept turning into setting up a tunnel.
The usual loop: start ngrok, copy a new URL into Stripe or GitHub, trigger an event, and find out your handler returned the wrong status. Then do it all again tomorrow when the URL changes.
Testhooks gives you a webhook URL in one click. Then switch the endpoint to "In this browser tab" and something I haven't seen another tool do happens: your open tab forwards each request to your app on localhost, and your app's real response goes back to the sender. Stripe sees your actual 200 or 500, and you watch it happen in the tab. Nothing to install, no tunnel, no account.
Beyond that:
• Capture and inspect every request as it arrives
• Reshape payloads with a few lines of JavaScript, and preview the change on real traffic before you save it
• Script the reply the sender gets, or forward to any URL
• Verify Standard Webhooks, HMAC and Ed25519 signatures
• Use it from your AI agent: `testhooks mcp` lets Claude Code or Cursor create an endpoint, read what the provider sent and write your handler from real traffic
Everything the UI does is also in the REST API, so scripts and CI can use it too.
It's open source (Apache 2.0) and self-hostable as a single binary. It runs in memory to try out, and you add PostgreSQL when you want to keep data.
The forward-to-localhost-from-a-browser-tab part is the win for me — webhook debugging usually starts with tunnel setup before you've even seen the first payload. Scripting the reply matters just as much as capturing the request, too, since half the bugs are in how Stripe or GitHub react when your endpoint answers slowly or with the wrong status.
About Testhooks on Product Hunt
“Webhooks tester, made for humans and for machines”
Testhooks was submitted on Product Hunt and earned 4 upvotes and 3 comments, placing #39 on the daily leaderboard. Free webhook tester. Get a webhook URL in one click, capture and inspect webhooks, test Stripe, GitHub, Shopify or Slack webhooks, forward them to localhost and script the reply. Open source.
Testhooks was featured in Productivity (665.2k followers), User Experience (369.6k followers), GitHub (41.5k followers) and Development (6.3k followers) on Product Hunt. Together, these topics include over 250.5k products, making this a competitive space to launch in.
Who hunted Testhooks?
Testhooks was hunted by Sarath SP. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Sarath SP
Hey Product Hunt 👋
I'm Sarath, and I built Testhooks because testing webhooks kept turning into setting up a tunnel.
The usual loop: start ngrok, copy a new URL into Stripe or GitHub, trigger an event, and find out your handler returned the wrong status. Then do it all again tomorrow when the URL changes.
Testhooks gives you a webhook URL in one click. Then switch the endpoint to "In this browser tab" and something I haven't seen another tool do happens: your open tab forwards each request to your app on localhost, and your app's real response goes back to the sender. Stripe sees your actual 200 or 500, and you watch it happen in the tab. Nothing to install, no tunnel, no account.
Beyond that:
• Capture and inspect every request as it arrives
• Reshape payloads with a few lines of JavaScript, and preview the change on real traffic before you save it
• Script the reply the sender gets, or forward to any URL
• Verify Standard Webhooks, HMAC and Ed25519 signatures
• Use it from your AI agent: `testhooks mcp` lets Claude Code or Cursor create an endpoint, read what the provider sent and write your handler from real traffic
Everything the UI does is also in the REST API, so scripts and CI can use it too.
It's open source (Apache 2.0) and self-hostable as a single binary. It runs in memory to try out, and you add
PostgreSQL when you want to keep data.
Try it: https://testhooks.vercel.app
Code: https://github.com/sarathsp06/testhooks
I'd love to hear what you test webhooks against today, and what would make you switch. I'm here all day to answer questions.