npm / svix

svix

What changed in svix 2, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-28.

3 breaking1 security2 new APIs and options2 behavior and defaults8 fixes and other

See which of these apply to your code, ranked, in your agent:

npx @unstale/cli init

svix 216 changes

For 4xx responses with non-JSON bodies, the JavaScript library throws ApiException with the raw response text as body instead of throwing SyntaxError.
2.9.1release notes
Go, Java, Kotlin, PHP, and Ruby default to a 15-second request timeout, matching the other SDKs.
2.9.0release notes
JavaScript requests now time out after 15 seconds by default; previously there was no timeout unless requestTimeout was set.
2.9.0release notes

Advanced Destinations add ElasticSearch support through the latest Svix Cloud API.
2.9.0release notes
CLI commands can populate a request body from a file using cURL-style @filename syntax.
2.8.0release notes

Python retries on HTTP 423 responses and I/O errors.
2.9.0release notes
C#, Go, Java, JavaScript, Kotlin, PHP, Ruby, and Rust retry requests that fail due to timeouts or other network errors, not just 5xx responses.
2.9.0release notes

The Go default retry schedule uses 50ms, 100ms, and 200ms instead of 50µs, 100µs, and 200µs.
2.9.0release notes
Java and Kotlin libraries strip trailing slashes from server URLs.
2.9.0release notes
PHP reuses the same svix-req-id across retries of a request.
2.9.0release notes
PHP sends the svix-retry-count header on retries.
2.9.0release notes
C# Async methods honor cancellation duration while waiting to retry by using Task.Delay instead of Thread.Sleep.
2.8.0release notes
The Ruby method now accepts raw key bytes instead of base64 encoded bytes.
2.8.0release notes
The Go method now uses a value receiver, consistent with other methods, so it works as expected.
2.8.0release notes
The Go method now allows passing nil for options.
2.8.0release notes