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

# Zencoder

> Configure Zencoder with the Compose external OpenAI-compatible API.

Configure Zencoder as an OpenAI-compatible provider:

| Setting    | Value                                               |
| ---------- | --------------------------------------------------- |
| Base URL   | `https://api.compose.market/external/v1`            |
| API key    | Your Compose Key                                    |
| Model list | `GET https://api.compose.market/external/v1/models` |

Copy the model ID exactly from the catalog. Public aliases such as `openai/gpt-5.5` are valid model IDs.

There is no Zencoder-specific `/.well-known` endpoint.

## Related

* [External clients](/inference/external-use/overview)
* [Compose Keys](/x402/compose-key)