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Native Anthropic request/response (and SSE). Auth with x-api-key or Bearer rd_sk_…

Use the same Rodium API key as OpenAI mode. Prefer x-api-key with the Anthropic SDK; Bearer also works.

Request body parameters

Parameter	Type	Required	Description
model	string	Required	Anthropic catalogue id (e.g. anthropic/claude-sonnet-4-6). Claude-first MVP.
messages	array	Required	Anthropic Messages array (role + content blocks or text).
max_tokens	integer	Required	Maximum output tokens (required by Anthropic Messages).
system	string \| array	Optional	Optional system prompt.
stream	boolean	Optional	When true, returns native Anthropic SSE (message_start, content_block_delta, …).
temperature	number	Optional	Sampling temperature when supported.
tools	array	Optional	Anthropic tool definitions (non-stream recommended for tool rounds).

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