Mead.Provider backed by the Anthropic Messages API.
Options
:model- model identifier; defaults to"claude-sonnet-5-5".:max_tokens- upper bound on the reply length; defaults to 1024.:api_key- the key itself. When absent, the key is read from:api_key_file.:api_key_file- aNAME=valuefile holdingANTHROPIC_API_KEY; defaults to~/.config/anthropic/api.env.:receive_timeout- milliseconds to wait for the reply; defaults to 25 seconds, below the default turn timeout so a slow provider reports its own reason first.:maximum_retry_delay- milliseconds; the longest wait before a retry, even when the server asks for more withretry-after; defaults to 2 seconds.:req_options- extra options merged into theReqrequest, used by tests to stub the network.
converse_stream/4 is converse/3 over server-sent events: it calls on_delta with each text fragment as it arrives and returns the same result, built by the same parser, so a stream and the equivalent plain body cannot disagree.
converse/3 also sends tools (omitted from the request when the list is empty) and returns the blocks of the answer; complete/2 is built on it and keeps returning the joined text. Blocks other than text and tool_use are dropped.
Requests are retried at most twice, and only after HTTP 429 or a 5xx status. A timeout or a transport error is never retried. The key travels only in the request header and is never part of a returned reason.