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ToolExecutorStrategy

type ToolExecutorStrategy = "sequential" | "concurrent";

Defined in: src/agent/agent.ts:153

Strategy for executing tool calls that the model emits in a single assistant turn.

  • 'concurrent' (default) — runs all tool calls from a single turn in parallel. Per-tool event order (BeforeToolCallEvent → ToolStreamUpdateEvent* → AfterToolCallEvent → ToolResultEvent) is preserved, while cross-tool events may interleave.
  • 'sequential' — runs tool calls one at a time

Cancellation works identically in both modes: Agent.cancel flips Agent.cancelSignal, which SDK-managed tool contexts expose as context.cancelSignal. In concurrent mode, prompt batch-wide cancellation requires every in-flight tool to honor the signal.