mini-spec SKILL.md skillA

mini-spec 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/mini-spec@git:20261101.bfc03f8

Pins git:20261101.bfc03f8 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/mini-spec/SKILL.md
Versions recorded
8
Latest version
git:20261101.bfc03f8, committed Nov 1, 2026
First version recorded
Jun 15, 2026
Size
9,392 bytes
Repository stars
6
License
MIT

Create a compact, reference-first SPEC.md that defines the task-specific delta, non-goals, likely failure modes, spec ceiling, and verification target without paraphrasing richer authoritative sources.

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

# Mini Spec

## Purpose

Create the smallest useful `SPEC.md` that clarifies intent, names the likely failure mode, and gives the agent a verifiable target before planning or implementation.

The spec is both a floor and a ceiling: acceptance criteria define what must happen; non-goals, constraints, and invalid-if rules bound what must not be added.

When a high-fidelity reference already expresses behavior well, point to it instead of rewriting it into a weaker prose summary. The spec should capture the task-specific delta, authority boundary, and proof target around that reference.

## When to use

Use when a project or feature is clear enough to define before implementation.

## Inputs

- Clarified request
- `CONTEXT.md` if available
- Constraints
- Known commands
- Acceptance criteria or desired behavior
- Authoritative references when available: existing tests, code, schemas, HTML/mockups, rubrics, external specs, or a source implementation to port
- An accepted implementation-size expectation when one genuinely exists

## Reference-first rule

Prefer the richest authoritative source that already expresses the intended behavior.

For each reference, record:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tmusser/ai-engineering-skills/mini-spec@sha256:d4d938dc3dc8769e

The line at the top of this page pins the label git:20261101.bfc03f8, 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_4zdczkxiwz7y44qu.svg)](https://markdownregistry.com/a/art_4zdczkxiwz7y44qu)

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

Versions

The registry has recorded 8 versions of this file, between Jun 15, 2026 and Nov 1, 2026, about one every 20 days.

versioncommittedcommitsizeaudit
git:20261101.bfc03f8 latest2026-11-01 bfc03f8 9,392 BA view · diff
git:20261008.67190ab2026-10-08 67190ab 7,941 BA view · diff
git:20261004.5fe30652026-10-04 5fe3065 6,613 BA view · diff
git:20260727.bf887e52026-07-27 bf887e5 5,370 BA view · diff
git:20260726.d9d87012026-07-26 d9d8701 3,406 BA view · diff
git:20260723.d42dd2f2026-07-23 d42dd2f 2,620 BA view · diff
git:20260626.1692c352026-06-26 1692c35 2,321 BA view · diff
git:20260615.a3366382026-06-15 a336638 1,464 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 (9392 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_4zdczkxiwz7y44qu
GET https://markdownregistry.com/api/v1/resolve?ref=tmusser/ai-engineering-skills/mini-spec
GET https://markdownregistry.com/api/v1/blob/d4d938dc3dc8769eb20501bd55eef4eaaa015a5182288c1ad65d950d86d64296

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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