> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tavrn.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> Dated API versions and what changed in each

Each entry is a value you can send in the `Tavrn-Version` header. See [Versioning](/guides/v2/versioning) for how versions are resolved and supported. Additive changes ship to every version and are not listed here.

## 2026-10-16

Baseline. Introduces dated versioning via the `Tavrn-Version` header. No behaviour change — requests without the header, and all API keys created before this date, behave exactly as before.