--- title: Using the Svix Play API for Automated Webhook Testing description: Svix has launched the Svix Play API for public use, a free tool designed to make automated webhook testing easier. The post explains common approaches to... canonical: https://daily.dev/posts/using-the-svix-play-api-for-automated-webhook-testing-hj6fopcyz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Using the Svix Play API for Automated Webhook Testing | daily.dev og:description: Svix has launched the Svix Play API for public use, a free tool designed to make automated webhook testing easier. The post explains common approaches to... og:url: https://daily.dev/posts/using-the-svix-play-api-for-automated-webhook-testing-hj6fopcyz og:image: https://api.daily.dev/og/posts/hJ6FoPcYZ.png og:image:alt: Using the Svix Play API for Automated Webhook Testing og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Using the Svix Play API for Automated Webhook Testing **[Svix Blog](https://daily.dev/sources/svix)** · 5 min read · 0 upvotes · 0 comments ## Summary Svix has launched the Svix Play API for public use, a free tool designed to make automated webhook testing easier. The post explains common approaches to webhook testing—not testing at all, mocking handlers directly, and forwarding requests with tools like ngrok—before detailing how the Play API improves on these. It provides a persistent URL to receive third-party webhooks for polling in tests, and for testing outbound webhooks it can return custom status codes and echo request bodies to verify signing and error handling. Svix has used it internally for over a year and in customer betas for months before this public release. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How can I test webhooks in my CI pipeline without exposing my local server to the internet? The Svix Play API provides a persistent public URL that receives webhooks and lets you poll for new messages via an API instead of forwarding requests with a local tunnel. This avoids the reliability issues of tools like ngrok, which depend on network conditions and can conflict across parallel tests. It works for both testing webhooks you receive and ones you send. _daily.dev surfaces tooling like this for developers automating flaky webhook and integration tests._ ### How do I test that my outbound webhook implementation handles error responses like 429 or 503 correctly? The Svix Play API can be configured to return specific status codes, such as 429 or 503, to your outbound webhook requests, letting you verify your sender correctly handles those errors. It can also echo the full request body back and automatically verify payload signatures if you use Svix's signing libraries, giving more thorough coverage of your webhook sending logic. _Developers hardening webhook senders can track testing approaches like this via daily.dev._ ### What are the main ways to test webhook integrations besides not testing at all? Common approaches include mocking, where you call your webhook handler function directly with a known payload, signature, and timestamp instead of receiving a real webhook, and forwarding requests, where tools like ngrok or Svix Play's listen command route external webhooks to a local test runner for integration testing. Mocking is more reliable; forwarding better validates the full network path but is harder to set up. _daily.dev helps developers comparing webhook testing strategies keep tabs on new approaches._ --- Tags: [#testing](https://daily.dev/tags/testing) [View this post on daily.dev](https://daily.dev/posts/using-the-svix-play-api-for-automated-webhook-testing-hj6fopcyz) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Using the Svix Play API for Automated Webhook Testing","url":"https://daily.dev/posts/using-the-svix-play-api-for-automated-webhook-testing-hj6fopcyz","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/using-the-svix-play-api-for-automated-webhook-testing-hj6fopcyz"},"datePublished":"2026-08-23T07:21:25.044Z","dateModified":"2026-08-23T07:28:40.334Z","description":"Svix has launched the Svix Play API for public use, a free tool designed to make automated webhook testing easier. 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