constraint-driven-development SKILL.md skillA
constraint-driven-development from addyosmani/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add addyosmani/agent-skills/constraint-driven-development@git:20261029.ba3d99ePins git:20261029.ba3d99e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- addyosmani/agent-skills
- Path
skills/constraint-driven-development/SKILL.md- Versions recorded
- 8
- Latest version
- git:20261029.ba3d99e, committed Oct 29, 2026
- First version recorded
- Aug 8, 2026
- Size
- 22,216 bytes
- Repository stars
- 112,362
- License
- MIT
Establishes a project's quality bar as a written contract and stops agents quietly lowering it. Interviews the user on which dimensions matter, supplies sane default thresholds when they have no number in mind, records everything in CONSTRAINTS.md, and watches the diff for a weakened bar — new @ts-ignore or eslint-disable suppressions, skipped or deleted tests, assertions stripped out, unimplemented stubs, thresholds edited down. Use when no quality bar is written down, when the user says…
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
# Constraint-Driven Development ## Overview Other skills in this pack describe what good looks like. `code-review-and-quality` gives you five axes. `test-driven-development` gives you a cycle. `security-and-hardening` gives you a threat list. All of that lives in prose the agent reads and may or may not follow, and none of it survives the end of the session. This skill produces something different: a written record of **this project's** bar, with numbers, that outlives the conversation and can be checked mechanically. The reason matters. When you wrote the code, reading it told you whether it was any good. An agent writes more in an afternoon than you will read that week, so the judgement moves out of your head and into checks that run around the loop. Those checks need to exist, they need numbers you actually chose, and they need to fire close enough to the work that the agent fixes its own output. Spec-driven development says what to build. Test-driven development proves it works. Constraint-driven development defines what "good enough to ship" means, before anyone argues about it in a pull request. ## When to Use Apply this skill when: …
Read the whole file at its exact version.
How to install
mdr add addyosmani/agent-skills/constraint-driven-development@sha256:5a690018d415fa97The line at the top of this page pins the label git:20261029.ba3d99e, 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_7cq6qn7xrdkw2jbx)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 8 versions of this file, between Aug 8, 2026 and Oct 29, 2026, about one every 12 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261029.ba3d99e latest | 2026-10-29 | ba3d99e | 22,216 B | A | view · diff |
| git:20261029.82be2f5 | 2026-10-29 | 82be2f5 | 21,051 B | A | view · diff |
| git:20261024.0b7d58a | 2026-10-24 | 0b7d58a | 21,005 B | A | view · diff |
| git:20261019.27e6020 | 2026-10-19 | 27e6020 | 21,054 B | A | view · diff |
| git:20260907.cda4542 | 2026-09-07 | cda4542 | 21,008 B | A | view · diff |
| git:20260828.4be4bb7 | 2026-08-28 | 4be4bb7 | 20,880 B | A | view · diff |
| git:20260808.127bd99 | 2026-08-08 | 127bd99 | 19,430 B | A | view · diff |
| git:20260808.0c960d6 | 2026-08-08 | 0c960d6 | 14,759 B | A | view |
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 (22216 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
addyosmani/agent-skills · 112,362 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7cq6qn7xrdkw2jbx GET https://markdownregistry.com/api/v1/resolve?ref=addyosmani/agent-skills/constraint-driven-development GET https://markdownregistry.com/api/v1/blob/5a690018d415fa972d1ecc85aed943a4f86b0d3c2305eea84f286ff391422008
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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