# `Agentic.LLM.Transport.AnthropicMessages`

Transport for the Anthropic Messages API
(`POST {base_url}/messages`).

As with `Agentic.LLM.Transport.OpenAIChatCompletions`, this module is
pure: no network I/O, no credential lookup, no Worth-prefixed code.
The shim supplies the api key, base URL, and the
`anthropic-version` header via `opts[:extra_headers]`.

# `default_base_url`

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*Consult [api-reference.md](api-reference.md) for complete listing*