# API Reference (/docs/api-reference)



For now, the API reference is provided through the live `Scalar` documentation exposed by the platform services.

The sub-domain stays the same across environments. Only the cluster base domain changes.

Use the DNS of your own platform deployment. The examples below are intentionally environment-agnostic.

CoreAI API [#coreai-api]

* `https://llm-backend.<platform-domain>/scalar`

Anthropic Messages API [#anthropic-messages-api]

* `https://llm-backend.<platform-domain>/anthropic/openapi.json`

The Anthropic-compatible endpoint serves the same models through the Anthropic wire format. Used by Claude Code and the Anthropic SDK. See [Claude Code](/docs/development/developer-tools/claude-code) for configuration.

Notes [#notes]

* use the DNS of your target cluster or environment
* the host pattern stays stable even when the environment changes
* for integration guidance, start from [Development](/docs/development) and [CoreAI API](/docs/coreai/components/coreai-api)

API Updates [#api-updates]

For a full list of API surface changes, new endpoints, breaking changes, and deprecated fields per release, see [Release Notes — API Updates](/docs/release-notes#api-updates).