Agent replay – Definition & Meaning

Definition of agent replay

: the reconstruction or controlled re-execution of a recorded AI agent run from its messages, model calls, tool calls, state changes, and results so developers can debug, compare, evaluate, or test the run
- The engineer used agent replay to find the tool response that caused the shopping agent to choose the wrong item.
- Before deploying the fix, the team replayed the failed trace with external side effects disabled.

Origin & history

Agent replay adapts event replay, execution tracing, and record-and-replay debugging from conventional software to AI agents. The term became more common in 2026 as agent platforms, observability tools, and benchmarking research added ways to inspect, replay, fork, and compare recorded agent traces.

Editorial references

Sources & further reading

3 sources

Trace Replay in Microsoft Foundry Official Documentation · Microsoft Learn · 2026
Agent Trace Replay Official Documentation · NVIDIA Documentation · 2026
AgentReplay: Token-Wise Trace Replay Is Essential for Fair Serving System Performance Benchmarking Research Paper · arXiv · 2026-09

Test yourself

Which of these is the meaning of agent replay?

Related terms

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Cite this entry

"Agent replay." AI Dictionary, Dadgogo, https://dadgogo.com/dictionary/agent-replay/. Accessed 18 Oct. 2026.