MessageType

Input authored by the human, rendered above the agent's response.

Streamed agent response rendered with markdown.

Record of a tool invocation, including its args, status, and output.

Record of a skill invocation, carrying its SKILL.md body and metadata.

Error surfaced to the user (e.g., a failed tool call or SDK exception).

App-status note from the app itself (version info, command feedback).

Notification that the prior conversation was summarized/offloaded.

Unified diff preview attached to a file-modifying tool call.