Retro Agent
Performs retrospectives on agent workflows — analyzes what happened, identifies improvement opportunities, and proposes changes as structured GitHub issues.
How the agent works
The retro agent is triggered after a workflow completes (PR merged or closed), or on-demand via /fs-retro. It reconstructs the full workflow graph — triage, code, review, fix, and human interactions — by fetching issue and PR timelines, agent run logs, and review threads.
- Pre-script gathers metadata about the originating PR or issue.
- Sandbox — the agent reads the full workflow history, identifies patterns (wasted cycles, missed context, repeated failures), and writes structured proposals. It uses the retro-analysis and finding-agent-runs skills. The agent cannot write files or edit code in the target repo.
- Validation loop — output is checked against a schema, with up to 2 retries.
- Post-script creates GitHub issues from the agent's proposals.
When triggered via /fs-retro, the human's comment is passed to the agent as high-signal direction about what to focus on.
How it helps
- Every workflow gets a post-mortem, not just the ones that failed badly enough for someone to notice.
- Improvement proposals are filed as issues with context, so they enter the normal triage/prioritize pipeline.
- Patterns across multiple retros surface systemic issues (e.g., a skill that consistently underperforms).
Commands
| Command | Where | Effect |
|---|---|---|
/fs-retro | PR or issue comment | Triggers a retrospective analysis |
Requires write-level repository permission (admin, maintain, or write).
The /fs-retro command accepts optional free-text instructions after the
command. The text is passed to the agent as high-signal direction about what
to focus on:
/fs-retro— general retrospective on the workflow/fs-retro figure out why the review agent approved this and make sure it never happens again/fs-retro the code agent spent 30 minutes on a 2-line fix, what went wrong
The retro agent also runs automatically when a PR is closed (merged or not).
Control labels
The retro agent does not apply or consume control labels.
Configuration and extension
See Customizing with AGENTS.md and Customizing with Skills.
Variables
None.