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

# Legacy get-agent-versions endpoints removed (09/15/2026)

> On 09/15/2026 Retell removes GET /get-agent-versions and GET /get-chat-agent-versions. Migrate to the unified GET /list-agent-versions endpoint.

## Get agent versions endpoints are deprecated

**Deprecation date:** 09/15/2026

The following APIs are deprecated as of 09/15/2026. Migrate to the listed replacements.

**Affected APIs:**

* `GET /get-agent-versions/{agent_id}`
* `GET /get-chat-agent-versions/{agent_id}`

## Endpoint migrations

* `GET /get-agent-versions/{agent_id}` -> `GET /list-agent-versions/{agent_id}`
* `GET /get-chat-agent-versions/{agent_id}` -> `GET /list-agent-versions/{agent_id}`

## Migration details

* Update client calls to use the replacement method and path listed above.
* Deprecation date: 09/15/2026.