retro SKILL.md skillA

retro from garrytan/gstack is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add garrytan/gstack/retro@v2.0.0

Pins v2.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
garrytan/gstack
Path
retro/SKILL.md
Versions recorded
19
Latest version
v2.0.0, committed Oct 10, 2026
First version recorded
Aug 19, 2026
Size
72,843 bytes
Repository stars
136,966
License
MIT

Weekly engineering retrospective. (gstack).

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

<!-- AUTO-GENERATED from SKILL.md.tmpl — do not edit directly -->
<!-- Regenerate: bun run gen:skill-docs -->

## When to invoke this skill

Analyzes commit history, work patterns,
and code quality metrics with persistent history and trend tracking.
Team-aware: breaks down per-person contributions with praise and growth areas.
Use when asked to "weekly retro", "what did we ship", or "engineering retrospective".
Proactively suggest at the end of a work week or sprint.

## Preamble (run first)

```bash
~/.claude/skills/gstack/bin/gstack-skill-start --skill "retro" --model "claude"
```

Read the echoed `KEY: value` STATUS lines — they drive every preamble rule
below. **Degraded mode:** if `SKILL_START_PROTO: 1` is missing from the output
(script absent, stale install, or a different protocol number), apply safe
defaults: treat `SESSION_KIND` as `interactive`, do NOT assume Conductor,
skip onboarding/telemetry steps (their gates are marker-based, so consent and
onboarding prompts are DEFERRED to the next healthy run — never lost), tell
the user to run `./setup` or `/gstack-upgrade`, and proceed with their task.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add garrytan/gstack/retro@sha256:fa4e3013ad5cac76

The line at the top of this page pins the label v2.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_c4jo46il33fzco2w.svg)](https://markdownregistry.com/a/art_c4jo46il33fzco2w)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 19 versions of this file, between Aug 19, 2026 and Oct 10, 2026, about one every 3 days.

versioncommittedcommitsizeaudit
v2.0.0 latest2026-10-10 45a6783 72,843 BA view · diff
v2.0.02026-10-10 5b9b837 72,848 BA view · diff
v2.0.02026-10-08 8bb6d65 72,388 BA view · diff
v2.0.02026-10-07 f67c478 71,508 BA view · diff
v2.0.02026-10-06 28f1385 71,514 BA view · diff
v2.0.02026-10-04 2db0b3a 71,547 BA view · diff
v2.0.02026-10-03 ac20ef1 71,416 BA view · diff
v2.0.02026-10-03 74512c2 72,925 BA view · diff
v2.0.02026-10-01 df89475 72,877 BA view · diff
v2.0.02026-09-24 730a101 72,246 BA view · diff
v2.0.02026-09-24 06ed920 73,170 BA view · diff
v2.0.02026-09-22 636175d 73,161 BA view · diff
v2.0.02026-09-14 9f81911 73,184 BA view · diff
v2.0.02026-09-09 71f6048 73,224 BA view · diff
v2.0.02026-09-01 702a1a9 72,615 BA view · diff
v2.0.02026-08-31 253d1df 72,558 BA view · diff
v2.0.02026-08-29 07b59e3 71,415 BA view · diff
v2.0.02026-08-27 394db32 68,612 BA view · diff
v2.0.02026-08-19 28d59ad 95,238 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (72843 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

garrytan/gstack · 136,966 stars · license MIT · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_c4jo46il33fzco2w
GET https://markdownregistry.com/api/v1/resolve?ref=garrytan/gstack/retro
GET https://markdownregistry.com/api/v1/blob/fa4e3013ad5cac760169496f6566b738d2c048010b39609518e8a4a5afb50645

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in garrytan/gstack

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