mistake-to-constraint SKILL.md skillA
mistake-to-constraint from kunanonj/ai-skills-hub is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add kunanonj/ai-skills-hub/mistake-to-constraint@git:20261006.876cce4Pins git:20261006.876cce4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- kunanonj/ai-skills-hub
- Path
plugins/superstacks/skills/mistake-to-constraint/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261006.876cce4, committed Oct 6, 2026
- Size
- 1,476 bytes
- Repository stars
- 5
- License
- MIT
Use when a mistake repeats. Encode it as the strongest guard — type or runtime, lint, test, directory convention, then a rules line — and log it in CONSTRAINTS.md.
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
# Mistake to constraint A repeated mistake is an environment bug. Do not add another prompt paragraph first. ## Order (strongest first) 1. **Type narrowing or runtime guard** — make the illegal state unrepresentable. See `templates/runtime-guard.py`. 2. **Lint rule** — copy `templates/eslint-rule.cjs` or `templates/semgrep-rule.yml`. Prefer an existing ruff selector from `templates/ruff-snippet.toml` before a new plugin. 3. **Test** — a regression that fails if the mistake returns. 4. **Directory convention** — put the dangerous thing in a folder that review and CI already treat as special. 5. **Rules line** — last. Only when 1–4 cannot hold the line. ## Ledger Keep `CONSTRAINTS.md` at the repo root of the consuming project. Start from the template next to this skill. Each row: date, mistake, guard added, kind (`type` / `runtime` / `lint` / `test` / `directory` / `rules`). ## Rules - One mistake, one guard. Do not stack a lint rule and a rules line for the same bug unless the lint cannot see it. - Do not install ESLint, ruff, or semgrep. Wire the template into tools the repo already runs. …
Read the whole file at its exact version.
How to install
mdr add kunanonj/ai-skills-hub/mistake-to-constraint@sha256:55cfb475729bdaf8The line at the top of this page pins the label git:20261006.876cce4, 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.
[](https://markdownregistry.com/a/art_l72os2bzrrjv5nvn)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 6, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1476 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
kunanonj/ai-skills-hub · 5 stars · license MIT · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_l72os2bzrrjv5nvn GET https://markdownregistry.com/api/v1/resolve?ref=kunanonj/ai-skills-hub/mistake-to-constraint GET https://markdownregistry.com/api/v1/blob/55cfb475729bdaf8b69eec962a275e89fff3132cefd14365afaf78a1ed7f376e
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.