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.
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
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