retro

retro is a command for Claude Code from optimiziramsi/skills. It costs 28 tokens per session (90 once invoked), scanned A, original, MIT.

A command that closes a coding session by collecting lessons, routing them to storage, and handling commits through a separate retro skill.

In plain words
What is it for?
Use it at the end of a session to run the retro process, save learnings, and commit approved changes.
Why use it?
It provides a defined wrap-up step so useful learnings are recorded and risky changes can be proposed for review.

Command for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Part of the lessons plugin — 2 skills, 2 commands, 1 agent shipped together

Good fit Use it at the end of a session to run the retro process, save learnings, and commit approved changes.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/optimiziramsi/skills/retro
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/optimiziramsi/skills

Made for: Claude Code.

Or install lessons, the plugin that ships this one along with the rest of its 2 skills, 2 commands, 1 agent.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for retro

README.md
[![agentmods](https://agentmods.dev/badge/commands/optimiziramsi/skills/retro/github.svg)](https://agentmods.dev/commands/optimiziramsi/skills/retro)
Your own site
<a href="https://agentmods.dev/commands/optimiziramsi/skills/retro"><img src="https://agentmods.dev/badge/commands/optimiziramsi/skills/retro/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for retro

Your own site · 80×15
<a href="https://agentmods.dev/commands/optimiziramsi/skills/retro"><img src="https://agentmods.dev/badge/commands/optimiziramsi/skills/retro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 90 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00028 $0.00090
Opus 5.5 $0.00011 $0.00036
Sonnet 5.5 $0.00006 $0.00018
Haiku 4.5 $0.00003 $0.00009

Measured 1mo ago against content hash b6c80d7c0289, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

retro scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

lessons/commands/retro.md · 12 lines

What it actually says

Invoke the retro skill via the Skill tool and follow its SKILL.md steps in order. This wrapper carries no logic — the skill is the single source of the steps.

Arguments: $ARGUMENTS

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 12 lines · 28 tokens per session scan A b6c80d7c0289

Subscribe to this mod's changes

retro is a command published in the GitHub repository optimiziramsi/skills (2 stars, last pushed 3d ago), licensed MIT. It adds 28 tokens to every session and 90 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.