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impeccable SKILL.md skillA

impeccable from tibursocampos/agent-dev-toolkit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add tibursocampos/agent-dev-toolkit/impeccable@git:20260925.2abd8bc

Pins git:20260925.2abd8bc in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: tibursocampos/agent-dev-toolkit
Path: core/skills/impeccable/SKILL.md
Versions recorded: 5
Latest version: git:20260925.2abd8bc, committed Sep 25, 2026
First version recorded: Jul 31, 2026
Size: 11,626 bytes
Repository stars: 6
License: MIT

Design, shape, critique, audit, and polish frontend UI; writes docs/DESIGN-BRIEF.md for stack handoff. Use for UI/UX design work or when invoking /impeccable.

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

## STOP - Read before ANY tool call

1. Read `{{GUARDRAILS_PATH}}`
2. Read `_shared/sdd-artifacts/SESSION.md`; load session-state for `$Cwd`
3. If the relevant gate is not approved: **STOP** - ask user **(pt-BR)** - do **NOT** Write/Shell
4. SDD/develop skills: after **ONE** step/task, **STOP** session - handoff only
5. This skill body is **English**; user-facing prompts may be **(pt-BR)**

### Step -1 - Gate check (report in chat before continuing)

```
Gate check:
[ ] guardrails.mdc read
[ ] SESSION.md read; session-state loaded
[ ] User confirmed current action (sim)
-> If any unchecked: STOP
```

---

Inspired by [pbakaus/impeccable](https://github.com/pbakaus/impeccable) — this skill is a **partial toolkit harness**, not a full port. See `docs/CREDITS.md`.

## Trigger

Use when user asks for `/impeccable`, `/impeccable`, or any Impeccable command (`shape`, `audit`, `polish`, `craft`, etc.).

**Invocation forms:**

| User says | Behavior |
|-----------|----------|
| `/impeccable` | Context-aware menu; no auto-run |
| `/impeccable <command> [target]` | Load `reference/<command>.md` and execute |
| `/impeccable-shape` | Alias: `shape` command |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add tibursocampos/agent-dev-toolkit/impeccable@sha256:9efd13ed5b551b3e

The line at the top of this page pins the label git:20260925.2abd8bc, 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](https://markdownregistry.com/badge/art_gugcqmfs7a6v5ctw.svg)](https://markdownregistry.com/a/art_gugcqmfs7a6v5ctw)

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

Versions

The registry has recorded 5 versions of this file, between Jul 31, 2026 and Sep 25, 2026, about one every 14 days.

version	committed	commit	size	audit
git:20260925.2abd8bc latest	2026-09-25	2abd8bc	11,626 B	A	view · diff
git:20260821.7d5c9d6	2026-08-21	7d5c9d6	9,830 B	A	view · diff
git:20260806.c1ac4ca	2026-08-06	c1ac4ca	9,409 B	A	view · diff
git:20260804.d053216	2026-08-04	d053216	8,614 B	A	view · diff
git:20260731.f213f84	2026-07-31	f213f84	8,452 B	A	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 (11626 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

tibursocampos/agent-dev-toolkit · 6 stars · license MIT · pushed 2026-10-21 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_gugcqmfs7a6v5ctw
GET https://markdownregistry.com/api/v1/resolve?ref=tibursocampos/agent-dev-toolkit/impeccable
GET https://markdownregistry.com/api/v1/blob/9efd13ed5b551b3e8c1409c56f2cf5f8292cbf7582dee932aa77cb1065597653

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.