Module messages 

SDK message types — mirrors the Claude Agent SDK message stream.

See https://code.claude.com/docs/en/agent-sdk/agent-loop. The loop yields a sequence of these in order: System{Init} → (Assistant → User(tool_results))* → final Assistant → Result.

Enums

ContentBlock

Per-block content inside an Assistant or User message.

ResultSubtype

Final disposition of an agent run.

SdkMessage

Streamed message types in turn order.

SystemSubtype

Subtype of a System message.