ai_session_tool_usages

Individual tool invocations within an AI session. Metadata only; tool arguments and results are never captured.

id Primary key: Unique identifier for the row.
ai_session_id Foreign key: ID of the associated AI session.
external_id Foreign key: External identifier for the tool invocation, provided by the AI tool. Unique within the session.
tool_name string: Name of the invoked tool as reported by the AI tool.
tool_type string: Normalized classification of the invocation ("mcp", "skill", or "other").
started_at date: Timestamp when the tool invocation started. Null when the AI tool did not report one.
completed_at date: Timestamp when the tool invocation completed. Null when no completion was recorded.
duration_ms number: Elapsed duration of the tool invocation in milliseconds. Null when it could not be determined.
status string: Outcome of the tool invocation ("success" or "error"). Only populated when the AI tool reports it explicitly.
model string: AI model that issued the tool invocation.
row_created_at date: Timestamp when the record was created.
row_updated_at date: Timestamp when the record was last updated.