This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
RelayKit
Webhook infrastructure with a local dev tunnel built in
RelayKit is webhook infrastructure built for developers: one ingest URL, fan-out to unlimited destinations, automatic retries with backoff, signature verification for 8 providers, and a free CLI that tunnels real webhooks straight to localhost. No more pasting new ngrok URLs into Stripe every morning.
Hey Product Hunt 👋
I built RelayKit because I was tired of the ngrok-URL-paste dance every time I restarted my dev server, and equally tired of finding out a webhook integration was broken only after it hit production.
The thing I'm most excited to share today is the local dev tunnel. It's not a separate feature bolted on next to the "real" product, it's literally the same fan-out, retry, and signature-verification pipeline that handles production traffic, just pointed at localhost:
```
relaykit login
relaykit tunnel --port 3000
```
That's it. Real events from Stripe, GitHub, Shopify, whatever you're integrating with, show up in your terminal as they happen, with retries and signature checks behaving exactly like they would in prod. You can even run a tunnel and your production destination side by side on the same project.
It's free on the Hobby plan, no credit card required, so if you've got a webhook integration you're building right now, I'd love for you to try it and tell me what breaks.
Also happy to answer anything about how the retry/fan-out engine works, or why we built Schema Sentinel (drift detection) and Time Machine (bulk replay) the way we did. 🙏
the Schema Sentinel drift detection is the more interesting feature to me honestly, replay is table stakes at this point but silent payload shape changes from a provider are what actually take down an integration in prod. Does it just diff against the last seen payload per event type, or do you maintain some kind of schema baseline you compare against over time?
One thing that would make RelayKit a no-brainer for me is a built-in request replay feature, letting you re-send any historical webhook payload to your endpoint with one click. Super useful when you're debugging a bug that happened last Thursday and can't reproduce it.
Finally something that fixes the daily ngrok URL shuffle, the local tunnel feature alone is worth it and signature verification covering that many providers saved me a whole afternoon of setup.
the localhost tunnel is honestly the part that sold me, but adding a small in-dashboard log viewer for the last 50 failed deliveries with the response body from the destination would save a ton of time when something breaks
About RelayKit on Product Hunt
“Webhook infrastructure with a local dev tunnel built in”
RelayKit was submitted on Product Hunt and earned 16 upvotes and 9 comments, placing #31 on the daily leaderboard. RelayKit is webhook infrastructure built for developers: one ingest URL, fan-out to unlimited destinations, automatic retries with backoff, signature verification for 8 providers, and a free CLI that tunnels real webhooks straight to localhost. No more pasting new ngrok URLs into Stripe every morning.
RelayKit was featured in API (98.4k followers), SaaS (43k followers) and Developer Tools (515.4k followers) on Product Hunt. Together, these topics include over 134.8k products, making this a competitive space to launch in.
Who hunted RelayKit?
RelayKit was hunted by Gaurang Sharma. 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.
Want to see how RelayKit stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Gaurang Sharma