thin-plan SKILL.md skillA

thin-plan from tmusser/ai-engineering-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add tmusser/ai-engineering-skills/thin-plan@git:20260809.4494132

Pins git:20260809.4494132 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
tmusser/ai-engineering-skills
Path
skills/thin-plan/SKILL.md
Versions recorded
5
Latest version
git:20260809.4494132, committed Aug 9, 2026
First version recorded
May 13, 2026
Size
1,358 bytes
Repository stars
6
License
MIT

Convert a mini-spec into 3-7 vertical implementation slices.

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

# Thin Plan

## Purpose

Convert the mini-spec into 3-7 vertical implementation slices.

## When to use

Use when `SPEC.md` exists and implementation needs a short, ordered path.

## Inputs

- `SPEC.md`
- `CONTEXT.md`
- Existing repo structure
- Available verification commands

## Workflow

1. If `SPEC.md` has an active Contract ID, copy that ID exactly into `PLAN.md`. Do not invent an ID when SPEC has none.
2. Identify the smallest end-to-end behavior.
3. Create 3-7 slices that each produce observable behavior.
4. Make every slice independently verifiable.
5. Keep each slice to the fewest files possible.
6. Avoid horizontal architecture-only tasks unless required.
7. Record dependencies, risks, and verification strategy.
8. Write `PLAN.md` and `TODO.md`.

## Outputs

- `PLAN.md`
- `TODO.md`
- Active Contract ID in `PLAN.md` only when SPEC opted into contract identity

## Stop conditions

- Each task has a visible result and a check.
- Planning reveals a missing spec decision.

## Anti-patterns

- Planning all backend, then all frontend, then all tests.
- Creating broad tasks that cannot be finished in one session.
- Treating setup work as progress when no behavior changes.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tmusser/ai-engineering-skills/thin-plan@sha256:414700479f5ee0e2

The line at the top of this page pins the label git:20260809.4494132, 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_hpny3xbvxicul2xe.svg)](https://markdownregistry.com/a/art_hpny3xbvxicul2xe)

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

Versions

The registry has recorded 5 versions of this file, between May 13, 2026 and Aug 9, 2026, about one every 22 days.

versioncommittedcommitsizeaudit
git:20260809.4494132 latest2026-08-09 4494132 1,358 BA view · diff
git:20260518.0d37b7d2026-05-18 0d37b7d 1,094 BA view · diff
git:20260513.f9985462026-05-13 f998546 1,165 BA view · diff
git:20260513.58e49a62026-05-13 58e49a6 1,089 BA view · diff
git:20260513.29c281c2026-05-13 29c281c 1,166 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 (1358 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

tmusser/ai-engineering-skills · 6 stars · license MIT · pushed 2026-11-01 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hpny3xbvxicul2xe
GET https://markdownregistry.com/api/v1/resolve?ref=tmusser/ai-engineering-skills/thin-plan
GET https://markdownregistry.com/api/v1/blob/414700479f5ee0e2821c181713c44d7461f5c78fe2351794c77daae3141d9e32

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.

More from tmusser/ai-engineering-skills

AGENTS.md AGENTS.md file
tmusser/ai-engineering-skills · AGENTS.md
git:20260723.bcffaf4 · audit A · 6 stars
analyze-mini SKILL.md skill
tmusser/ai-engineering-skills · skills/analyze-mini/SKILL.md · Risk-triggered consistency checkpoint that detects when task artifacts, assumptions, or verification no longer support…
git:20260727.5a2073a · audit A · 6 stars
bug-capture SKILL.md skill
tmusser/ai-engineering-skills · skills/bug-capture/SKILL.md · Preserve discovered bugs as BUGS.md entries.
git:20260518.0d37b7d · audit A · 6 stars
build-one SKILL.md skill
tmusser/ai-engineering-skills · skills/build-one/SKILL.md · Implement exactly one planned slice after scope is frozen, without exceeding the spec ceiling or carrying known…
git:20261101.bfc03f8 · audit A · 6 stars
ceremony-budget SKILL.md skill
tmusser/ai-engineering-skills · skills/ceremony-budget/SKILL.md · Choose the smallest workflow that still buys back enough attention and safety for the task.
git:20261005.a4c4424 · audit A · 6 stars
checklist-mini SKILL.md skill
tmusser/ai-engineering-skills · skills/checklist-mini/SKILL.md · Validate a mini-spec before planning.
git:20260518.0d37b7d · audit A · 6 stars
constitution-lite SKILL.md skill
tmusser/ai-engineering-skills · skills/constitution-lite/SKILL.md · Define a tiny set of stable, non-negotiable agent authority boundaries for repeated or delegated work without…
git:20260727.96471d7 · audit A · 6 stars
context-check SKILL.md skill
tmusser/ai-engineering-skills · skills/context-check/SKILL.md · Detect context drift, rehydration loops, hypothesis sprawl, scope creep, active-mode loss, and durable-state gaps…
git:20260626.1692c35 · audit A · 6 stars
diagnose-loop SKILL.md skill
tmusser/ai-engineering-skills · skills/diagnose-loop/SKILL.md · Diagnose reproducible failures with hypothesis-driven fixes and bounded retries.
git:20260910.1199fd5 · audit A · 6 stars
eco-mode SKILL.md skill
tmusser/ai-engineering-skills · skills/eco-mode/SKILL.md · Keep a small, budgeted working context for low-cost model execution without weakening task contracts, required sources…
git:20261026.2efd117 · audit A · 6 stars
falsify-spec SKILL.md skill
tmusser/ai-engineering-skills · skills/falsify-spec/SKILL.md · Adversarially test a bounded SPEC.md for plausible wrong implementations that still pass its written acceptance…
git:20261020.30b4737 · audit A · 6 stars
grill-with-docs-lite SKILL.md skill
tmusser/ai-engineering-skills · skills/grill-with-docs-lite/SKILL.md · Groom a fuzzy request and the smallest relevant source set into a bounded PRE-SPEC ASSEMBLY packet for mini-spec, using…
git:20261005.a4c4424 · audit A · 6 stars

Every file in tmusser/ai-engineering-skills

Browse by kind, by grade A, or by owner.