Module Ai_provider.Stream_partSource

Individual parts emitted during streaming generation.

Sourcetype t =
  1. | Stream_start of {
    1. warnings : Warning.t list;
    }
  2. | Text of {
    1. text : string;
    }
  3. | Reasoning of {
    1. text : string;
    2. signature : string option;
    }
  4. | Tool_call_delta of {
    1. tool_call_type : string;
    2. tool_call_id : string;
    3. tool_name : string;
    4. args_text_delta : string;
    }
  5. | Tool_call_finish of {
    1. tool_call_id : string;
    }
  6. | File of {
    1. data : bytes;
    2. media_type : string;
    }
  7. | Source of {
    1. source_type : string;
    2. id : string;
    3. url : string;
    4. title : string option;
    5. provider_options : Provider_options.t;
    }
  8. | Finish of {
    1. finish_reason : Finish_reason.t;
    2. usage : Usage.t;
    3. provider_metadata : Provider_options.t option;
      (*

      Provider-specific metadata available after the stream finishes (e.g. Anthropic cache_creation_input / cache_read_input token counts). Matches the providerMetadata field on upstream's finish LanguageModelV4StreamPart.

      *)
    }
  9. | Error of {
    1. error : Provider_error.t;
    }