effect-io-ai

Package: @effect/ai-anthropic
Module: AnthropicClient

AnthropicClient.MessageStreamEvent

Represents an event received from the Anthropic Messages API during a streaming request.

Details

Events include:

• message_start: Initial event containing message metadata
• message_delta: Incremental updates to the message (e.g., stop reason)
• message_stop: Final event indicating the message is complete
• content_block_start: Start of a content block
• content_block_delta: Incremental content updates (text, tool use, etc.)
• content_block_stop: End of a content block
• error: Error events with type and message

Signature

type MessageStreamEvent = | typeof Generated.BetaMessageStartEvent.Type
  | typeof Generated.BetaMessageDeltaEvent.Type
  | typeof Generated.BetaMessageStopEvent.Type
  | typeof Generated.BetaContentBlockStartEvent.Type
  | typeof Generated.BetaContentBlockDeltaEvent.Type
  | typeof Generated.BetaContentBlockStopEvent.Type
  | typeof Generated.BetaErrorResponse.Type

Source

Since v4.0.0