OrcaReplay vs agenttrail
AI agent debugging and local observability compared
OrcaReplay records AI agent runs for inspection, offline replay, and checkpoint-based comparison across models. agenttrail observes local coding-agent activity through project maps and a 3D task view, without launching or directing agents.
OrcaReplay: Record and Replay AI Agent Runs
OrcaReplay records AI agent runs so developers can inspect what happened, replay interactions offline, and fork a run from a checkpoint onto another model. It is a TypeScript CLI for debugging and comparing agent behavior without modifying the agent.
agenttrail: Observe AI Coding Agent Work Locally
Agenttrail is a local observability tool for AI coding agents, with a project map and a 3D task view built on Three.js. It watches available local files, plans, and agent activity without running or coordinating agents.
| OrcaReplay | agenttrail | |
|---|---|---|
| Language | TypeScript | JavaScript |
| License | Apache-2.0 | MIT |
| Stars | 274 | 913 |
| Forks | 65 | 65 |
| Last analyzed | Oct 4, 2026 | Oct 19, 2026 |
Key differences
- OrcaReplay focuses on debugging recorded runs, including model requests, tool calls, shell activity, and filesystem changes; agenttrail focuses on observing project structure, file changes, plans, and available agent activity.
- OrcaReplay can replay model interactions offline and fork a run from a checkpoint; agenttrail presents local activity in Map and Kitchen browser views.
- OrcaReplay is a TypeScript CLI with a TypeScript API and MCP server; agenttrail is JavaScript software with local browser views.
- OrcaReplay uses the Apache-2.0 license; agenttrail uses the MIT license.
- OrcaReplay requires Node.js 20 or newer and describes its trace format as version 0; agenttrail's Kitchen view is an experimental preview, and its local provider log formats may change.
- OrcaReplay has 274 stars and 65 forks; agenttrail has 913 stars and 65 forks.
Choose OrcaReplay if you…
- need to inspect or reproduce a specific agent run using a saved trace.
- want to replay model interactions offline or compare models from the same checkpoint.
- need a CLI and integrations for accessing, exporting, or replaying traces.
Choose agenttrail if you…
- want a local map connecting project plans, file changes, and dependencies.
- need a browser-based view of available coding-agent tasks and contributions.
- want to observe local agent activity without launching or coordinating agents.
Compare the numbers side by side, or add more projects
This comparison is generated with AI from the OSRepos analyses of both projects. Always check each project's repository and documentation before choosing.