---
title: "Discussion on \"Your Agent Card Needs a Public URL: Testing A2A Push Notifications on Localhost\" | Hashnode"
description: "Discussion on \"Your Agent Card Needs a Public URL: Testing A2A Push Notifications on Localhost\". Your A2A agent card needs a public URL. Learn to test push notifications on localhost with a stable tunnel and SSRF-safe webhook registration."
url: "https://hashnode.com/posts/your-agent-card-needs-a-public-url-testing-a2a-push-notifications-on-localhost/6af01788713a8eeff70e456f"
---

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# [Your Agent Card Needs a Public URL: Testing A2A Push Notifications on Localhost](https://instatunnel.hashnode.dev/your-agent-card-needs-a-public-url-testing-a2a-push-notifications-on-localhost?utm_source=hashnode&utm_medium=feed)

Your A2A agent card needs a public URL. Learn to test push notifications on localhost with a stable tunnel and SSRF-safe webhook registration.

3d ago · 19 min read · instatunnel.hashnode.dev  
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