Retro

Retro is a Quality skill for Claude Code, published by huytieu in COG-second-brain.

930 stars110 forkson huytieu/COG-second-brainAdded 2026/08/22+1% in starsRepository updated 2026/08/18

agent-loopagent-pluginsagent-skillsagenticai-agentsclaude-codeclosed-loopcursorgarry-tangbraingstackknowledge-managementloop-engineeringobsidianpeople-crmproductivitysecond-brainself-evolvingverification-harnessworker-agents

Install in seconds

Install Retro

Copy Retro into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/huytieu/COG-second-brain/tree/main/skills/retro ~/.claude/skills/retro

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/huytieu/COG-second-brain.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/retro/SKILL.md in huytieu/COG-second-brain
Installs to: ~/.claude/skills/retro
Collection: One of 25 skills cataloged from this repository
Category: Quality — 1354 skills

What Retro does

Retro audits a completed run’s checkpoints, evidence quality, and open action items after ship or escalation. Use it to close the loop and feed lessons into the next run.

Retro is cataloged under Quality on DirSkills. Retro comes from a repository tagged agent-loop, agent-plugins, agent-skills, agentic and ai-agents.

Documentation

README

Excerpt

/retro — CP-7 close the V

Every non-tiny shipped or escalated run gets a retro. Retro is advisory but strongly expected: it is how the harness improves.

When to run

After CP-6 ship (approved publish, merged PR, vault deliverable done)
After escalate (capture why verifier failed)
End of an /ultragoal phase (one retro per phase)
Manual: /retro <run-dir or spec path>

Phase 1 — Gather evidence bundle

Read:

Spec or card description + acceptance criteria
04-projects/harness/runs/<id>/evidence/ (ledger, checkpoints.tsv, CP-* files)
.claude/logs/loop-ledger.tsv (last rows for this run)
04-projects/<goal>/STATUS.md if an ultragoal phase

Phase 2 — Checkpoint audit

For each CP the lane required, mark Expected vs Actual vs Gap:

This is the opening of the README. Read the full README on GitHub.

Commands Retro provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/retro
/ultragoal

Frequently asked about Retro

What else does huytieu publish alongside Retro?
Retro is one of 25 skills that DirSkills catalogs from huytieu/COG-second-brain, the repository it ships in. Its siblings there include Auto Research, Braindump and Closed-Loop Execute. Each one is a separate skill with its own page in this directory, installs the same way Retro does, and is maintained by huytieu in that same repository. The rest of the collection is listed on the huytieu/COG-second-brain page.
How does Retro compare to other Quality skills?
Retro ranks #887 by stars among the 1354 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Retro against them. Open each page to compare what they document and how they install.