Anthropic Compatible¶

Connect any service that exposes an Anthropic-compatible /v1/messages endpoint: self-hosted backends, third-party proxies, or gateways that speak the Anthropic protocol.

Provider file: ~/.codefreedom/proxy/config/providers/anthropic-compatible.yaml

Environment Variables¶

Variable	Description	Required
`ANTHROPIC_COMPAT_BASE_URL`	Your endpoint URL (e.g. `http://localhost:8000`)	Yes
`ANTHROPIC_COMPAT_API_KEY`	API key (or placeholder like `sk-dummy`)	Yes
`ANTHROPIC_COMPAT_MODEL`	Model identifier (e.g. `claude-sonnet-4-20250514`)	Yes

Configuration¶

model_list:
  - model_name: Anthropic-Compatible/Default
    litellm_params:
      model: anthropic/os.environ/ANTHROPIC_COMPAT_MODEL
      api_base: os.environ/ANTHROPIC_COMPAT_BASE_URL
      api_key: os.environ/ANTHROPIC_COMPAT_API_KEY
      timeout: 300
      drop_params: true
      max_tokens: 4096
    model_info:
      id: "anthropic-compat-default"
      db_model: false
      mode: chat
      context_window: 200000
      max_tokens: 200000
      max_output_tokens: 4096
      supports_system_messages: true
      supports_native_streaming: true
      supports_vision: true
      supported_openai_params:
        - tools
        - tool_choice
        - max_tokens
        - max_completion_tokens
        - stream
        - stream_options
        - temperature

Use the anthropic/ provider prefix so LiteLLM sends the request in Anthropic Messages format. Copy this block for each additional endpoint, adjusting model, api_base, and model_info as needed.

Enabling¶

Ensure providers/anthropic-compatible.yaml is in the include list in config.yaml.
Set ANTHROPIC_COMPAT_BASE_URL, ANTHROPIC_COMPAT_API_KEY, and ANTHROPIC_COMPAT_MODEL in ~/.codefreedom/.env.proxy.secrets.
Restart the proxy.