I made an online Webhook Tester
Hi HN! Last year, I built LocalCan app in which you can develop apps using .local domains and Public URLs. Although it allows for testing webhooks too, I wanted to give back and create a free online tool specifically for that purpose! And so, I've made Webhook.cool Simply use your unique webhook URL to send any webhook to it from services like Shopify, Slack, Mailchimp, Trello, GitHub, PayPal, Discord, and Jira. Give it a try and let me know how if you have any feedback.
I made an online Webhook Tester launched on January 8, 2024 with 43 votes, #877 of 4,438 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Webhook.cool is a free online tool for testing webhooks from services like Shopify, Slack, Mailchimp, Trello, GitHub, PayPal, Discord, and Jira. Developers can generate a unique webhook URL and send payloads to it to inspect and debug webhook behavior. The tool offers a straightforward way to validate webhook integrations without requiring additional setup or infrastructure.
written from the facts on this page · September 2026
From the sources
Webhook.Cool is a free, online webhook tester. Receive and inspect webhooks from services like Shopify, Slack, Mailchimp, Trello, GitHub, PayPal, Discord, Jira
Popular services that send webhooks: Shopify, Slack, Mailchimp, Trello, GitHub, PayPal, Discord,from webhook.cool
Does a similar job
all alternatives →
Webhook – A lightweight configurable tool written in Go2017 · github.com · ▲144webhook is a lightweight incoming webhook server to run shell commands - adnanh/webhook
Webhook Catcher2025 · webhook.projext.in · ▲105Create instant disposable Webhooks to inspect & respond fast
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 23d ago · openbot.run
Talanoa▲346Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Show HN post ↗
Launched alongside, January 2024
the whole month →
Amie▲1,334Turn meeting notes into automated workflows. Handle meetings, summaries, todos and emails (soon) with your AI personal assistant.
Work · 2024 · amie.so
- IM
Sit in Shade - Discover the optimal seat to stay in the shade during your journey. Sit In Shade provides real-time sun exposure data and route visualization.
Life & fun · 2024 · sitinshade.com
