replay-agent is an open-source CLI tool that allows developers to record and replay traces of LLM agent executions, enabling deterministic regression testing. Below are 6 testing & qa apps with similar functionality to replay-agent, matched by what each product actually does — not ranked or scored. Explore each to find the closest fit for your use case.
tool-call-replay is an open-source CLI tool that enables deterministic replay of agent tool-call traces, helping AI developers debug and validate agent behaviors. It is useful for testing and auditing agent workflows.
replaylab is an open-source toolkit that provides a local SDK, runtime, replay engine, and CLI for capturing and replaying test scenarios. It helps developers and QA engineers improve testing reliability and debugging efficiency.
agent-recorder is an open-source CLI tool that records every Claude Code and Codex session into a local, searchable SQLite database. It helps developers track, audit, and review their interactions with AI coding agents, providing observability and persistent storage for session data.
agent-xray is an open-source CLI tool that enables AI developers to debug, grade, and replay traces from AI agents locally. It provides observability and evaluation features for agent workflows, supporting local-first workflows and reproducible debugging.
agent-replay-debugger-mcp is an open-source CLI tool for debugging and auditing agentic AI workflows. It records every agent step, enables deterministic replay, and exports signed audit evidence. Designed for AI developers and researchers needing transparency and reproducibility in agentic loops.
epi-recorder is an open-source tool for capturing, sharing, and verifying failures from AI agent runs. It enables developers to create portable repro artifacts, view them in any browser, and streamline debugging and incident response workflows. Ideal for AI developers and teams focused on reproducibility and compliance.
