retro

retro is a skill for Claude Code from rjroy/vibe-garden. It costs 65 tokens per session (437 once invoked), scanned A, original, MIT.

A written record of a completed work session, describing what happened, what broke, what was surprising, and where the work differed from the plan. It saves this record as a searchable project note.

In plain words
What is it for?
Use it after completing work to document the session, including relevant project files, technologies, problems, and dead ends. It is for recording events, not giving advice or interpreting them.
Why use it?
Important details from a coding session can be lost after the work ends. A retro preserves those details for people working on similar tasks later.

Skill for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the lore-development plugin — 12 skills, 1 agent shipped together

Good fit Use it after completing work to document the session, including relevant project files, technologies, problems, and dead ends. It is for recording events, not giving advice or interpreting them.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add rjroy/vibe-garden
Claude Code
/plugin install lore-development

Made for: Claude Code.

Or install lore-development, the plugin that ships this one along with the rest of its 12 skills, 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/skills/rjroy/vibe-garden/retro/github.svg)](https://agentmods.dev/skills/rjroy/vibe-garden/retro)
Your own site
<a href="https://agentmods.dev/skills/rjroy/vibe-garden/retro"><img src="https://agentmods.dev/badge/skills/rjroy/vibe-garden/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/skills/rjroy/vibe-garden/retro"><img src="https://agentmods.dev/badge/skills/rjroy/vibe-garden/retro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 437 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 $0.00065 $0.00437
Opus 5 $0.00032 $0.00218
Sonnet 5 $0.00013 $0.00087
Haiku 4.5 $0.00006 $0.00044

Measured 9d ago against content hash c4735d0762ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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 9d 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.

lore-development/skills/retro/SKILL.md · 31 lines

What it actually says

Retro

Record what happened. The retro is the witness, not the analyst.

Future sessions will find this via lore-researcher. Make it searchable: tag the problem types, technologies, and patterns the session touched. That's what surfaces a retro when someone plans similar work later.

Stance

The body describes what happened. It does not interpret. Forbidden:

  • Analysis vocabulary: lesson, insight, we learned, takeaway don't appear in retro output.
  • "What went well / what could improve" structure — this trains toward invented best-practice tips that don't survive the next project.
  • Padding to fill a template. Five lines or fifty, both valid. Length follows the session.

What happened? What did the plan say versus what actually happened? Where did things get tripped up? What surprised? What dead ends were tried? What context is worth preserving for the next session in this area?

Write it as prose. Use structure only when it helps the reader follow.

Saving

Read relevant work artifacts first (spec, plan, notes) to reconstruct context before writing. Save to .lore/work/retros/[descriptive-name].md. Load ${CLAUDE_PLUGIN_ROOT}/shared/frontmatter-schema.md for the frontmatter fields.

Title describes the work, not a takeaway. "Auth-flow rollout" is a title. "Why we should always test migrations" is not. Tags and modules are how lore-researcher finds this later — keep them grep-discoverable.

Write the body in Markdown per the "Body Format" section of ${CLAUDE_PLUGIN_ROOT}/shared/frontmatter-schema.md. Reach for embedded inline HTML only when a visual carries meaning prose can't, such as a timeline diagram of how the session unfolded.

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. 9d ago First seen · 31 lines · 65 tokens per session scan A c4735d0762ff

Subscribe to this mod's changes

retro is a skill published in the GitHub repository rjroy/vibe-garden (6 stars, last pushed 2mo ago), licensed MIT. It adds 65 tokens to every session and 437 once invoked, about $0.0003 per session on Opus 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.

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