insight-retro

insight-retro is a skill for Claude Code from allemaar/open-skills. It costs 83 tokens per session (1,519 once invoked), scanned A, original, Apache-2.0.

A post-implementation review guide for documenting what changed, checking related documentation, and recording reusable lessons.

In plain words
What is it for?
Use it to map changed files and applications, extract repeated patterns, audit documentation, update knowledge records, and note follow-up work.
Why use it?
It reduces knowledge loss and helps uncover documentation drift or technical debt after substantial work is finished.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the open-skills plugin — 70 skills shipped together

Good fit Use it to map changed files and applications, extract repeated patterns, audit documentation, update knowledge records, and note follow-up work.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/allemaar/open-skills/insight-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.

Any agent
npx skills add allemaar/open-skills --skill insight-retro
Clone the repo
git clone --depth 1 https://github.com/allemaar/open-skills

Made for: Claude Code.

Or install open-skills, the plugin that ships this one along with the rest of its 70 skills.

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 insight-retro

README.md
[![agentmods](https://agentmods.dev/badge/skills/allemaar/open-skills/insight-retro/github.svg)](https://agentmods.dev/skills/allemaar/open-skills/insight-retro)
Your own site
<a href="https://agentmods.dev/skills/allemaar/open-skills/insight-retro"><img src="https://agentmods.dev/badge/skills/allemaar/open-skills/insight-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 insight-retro

Your own site · 80×15
<a href="https://agentmods.dev/skills/allemaar/open-skills/insight-retro"><img src="https://agentmods.dev/badge/skills/allemaar/open-skills/insight-retro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,519 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 $0.00083 $0.01519
Opus 5 $0.00042 $0.00759
Sonnet 5 $0.00017 $0.00304
Haiku 4.5 $0.00008 $0.00152

Measured 12d ago against content hash ddcbedebe88a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

insight-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 12d 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.

skills/insight-retro/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/retro

Structured reflection after completing large implementations — map what changed, verify documentation accuracy, capture reusable patterns, update knowledge, and flag follow-up work.

Structured execution spec: protocol.yon. Read it for the canonical rules and step sequence; this file is explanation. The two must stay in sync — if you edit one, update the other and refresh the @STAMP date.

Reflection Protocol — run after shipping significant work. Prevents knowledge loss, documentation drift, and tech debt accumulation. Observation only — fixes are separate tasks.

Phase 1 — Blast Radius Mapping

Identify everything that changed during execution. Sources: implementation_plan.md, walkthrough.md, task.md, conversation history, git diff.

Produce a structured manifest:

  • Packages touched
  • Apps touched
  • Files created / modified / deleted
  • New exports or APIs introduced

Group changes by package/app. This map drives every subsequent phase.

Gate: cannot proceed without knowing what changed.

Phase 2 — Pattern Extraction

Identify reusable patterns that emerged. Check for: new architectural patterns used in 2+ places; workarounds or gotchas future work will hit; integration patterns between packages not yet documented; novel solutions worth codifying.

For each pattern: name, description, reuse potential (HIGH / MEDIUM / LOW), recommended action (new skill, update existing skill, document in KI, or skip).

Phase 3 — Documentation Audit

For each package/app in the blast radius, audit all documentation surfaces.

Discovery: find README.md, llms.txt, index.yon, *.yon, *.feature.yon, CHANGELOG.md, barrel exports (index.ts).

  • For docs/skills repositories: also check SKILL.md files (description quality, runtime parity), cross-reference maps between skills, per-skill front-matter consistency. Consider a full library-audit pass.

Sidecar audit: for each significant changed file (>100 LOC, public API, component/hook/route handler/schema) — does a colocated .yon exist? Still accurate? Should one be created?

Read the full file on GitHub · 128 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 12d ago First seen · 128 lines · 83 tokens per session scan A ddcbedebe88a

Subscribe to this mod's changes

insight-retro is a skill published in the GitHub repository allemaar/open-skills (14 stars, last pushed yesterday), licensed Apache-2.0. It adds 83 tokens to every session and 1,519 once invoked, about $0.0004 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 2026-08-30.

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