addyosmani/agent-skills · skills/spec-driven-development/SKILL.md

spec-driven-development skillA

spec-driven-development is agent-read markdown (skill) from addyosmani/agent-skills: Creates specs before coding. Use when starting a new project, feature, or significant change and no specification exists yet. Use when drafting a PRD or requirements document with objectives and scope, or when requirements are unclear, ambiguous, or only exist as a vague idea. Use when a single requirement spans several independently testable capabilities and needs decomposing into a capability map of modules before specifying..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add addyosmani/agent-skills/spec-driven-development@git:20260912.bc97fd4
Exact content
mdr add addyosmani/agent-skills/spec-driven-development@sha256:f7129bca8742bad7

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_q4rqmv5ztt7rnmcs.svg)](https://markdownregistry.com/a/art_q4rqmv5ztt7rnmcs)

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Versions

versioncommittedcommitsizeaudit
git:20260912.bc97fd4 latest2026-09-12 bc97fd4 12,595 BA view · diff
git:20260907.cda45422026-09-07 cda4542 12,238 BA view · diff
git:20260905.15af65e2026-09-05 15af65e 12,520 BA view · diff
git:20260814.966e4e52026-08-14 966e4e5 12,163 BA view · diff
git:20260812.f18d2c32026-08-12 f18d2c3 8,625 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (12595 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

addyosmani/agent-skills · 93,583 stars · license MIT · pushed 2026-09-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_q4rqmv5ztt7rnmcs
GET https://markdownregistry.com/api/v1/resolve?ref=addyosmani/agent-skills/spec-driven-development
GET https://markdownregistry.com/api/v1/blob/f7129bca8742bad73f60209bd237e8b10dab6f1fae8576dc552fb1923bc1e721