feat(agent): add human-in-the-loop interrupt system#586
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feat(agent): add human-in-the-loop interrupt system#586jsamuel1 wants to merge 2 commits intostrands-agents:mainfrom
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Combines the following feature branches: - feat/summarizing-conversation-manager (PR strands-agents#524) - feat/structured-output-integ-tests (PR strands-agents#588) - feat/interrupt-system (PR strands-agents#586) - feat/swarm-multi-agent (PR strands-agents#587) - feat/graph-multi-agent (PR strands-agents#594) All 1277 unit tests pass. No type errors.
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Port the interrupt system from the Python SDK to TypeScript: - Interrupt class and InterruptException for pausing agent execution - BeforeToolCallEvent.interrupt() API for hook-based interrupts - BeforeToolCallEvent.cancelTool for tool cancellation without interrupt - Agent.resumeFromInterrupt() for resuming after human response - InterruptEvent stream event emitted when interrupts pause the loop - AgentResult.interrupts and stopReason 'interrupt' support - _InterruptState for tracking active interrupts and resume flow - Deferred tool execution on resume (skip model, re-execute pending tools)
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- Replace this.hooks with this._hooksRegistry in agent.ts - Replace AgentData with LocalAgent in InterruptEvent - Rewrite tests to use Plugin interface instead of HookProvider - Fix interrupt return path to use correct variables (modelMessage instead of modelResult which is out of scope) --- Prompt: review the tests and fix them
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Description
Port the interrupt system from the Python SDK to TypeScript, enabling human-in-the-loop workflows where hook callbacks can pause agent execution to request human input.
Changes
Interruptclass andInterruptExceptionfor pausing agent executionBeforeToolCallEvent.interrupt()API for hook-based interruptsBeforeToolCallEvent.cancelToolfor tool cancellation without interruptAgent.resumeFromInterrupt()for resuming after human responseInterruptEventstream event emitted when interrupts pause the loopAgentResult.interruptsandstopReason: 'interrupt'support_InterruptStatefor tracking active interrupts and resume flowTesting