Module event 

Structs

ErrorEvent

MessageEvent

ResultEvent

SessionStartEvent

TextDeltaEvent

ToolEndEvent

ToolStartEvent

UsageData

Token usage and cost data.

UsageDeltaEvent

Incremental usage report emitted during streaming.

Enums

Event

Unified event stream — the common language spoken by all agent adapters.

Role

Functions

extract_tool_calls

Extract paired ToolStart/ToolEnd events by call_id.

now_ms

Returns the current epoch time in milliseconds.

sum_costs

Sum all cost_usd values from UsageDelta and Result events.

total_tokens

Sum all input and output tokens from UsageDelta events.