spec-driven-development SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
spec-driven-development from b-mendoza/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add b-mendoza/agent-skills/spec-driven-development@git:20261014.c035a8bPins git:20261014.c035a8b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- b-mendoza/agent-skills
- Path
.agents/skills/spec-driven-development/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261014.c035a8b, committed Oct 14, 2026
- First version recorded
- Jul 28, 2026
- Size
- 13,096 bytes
- Repository stars
- 3
- License
- none declared
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.
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
# Spec-Driven Development ## Overview Write a structured specification before writing any code. The spec is the shared source of truth between you and the human engineer — it defines what we're building, why, and how we'll know it's done. Code without a spec is guessing. ## When to Use - Starting a new project or feature - Requirements are ambiguous or incomplete - The change touches multiple files or modules - You're about to make an architectural decision - The task would take more than 30 minutes to implement **When NOT to use:** Single-line fixes, typo corrections, or changes where requirements are unambiguous and self-contained. ## The Gated Workflow Spec-driven development has four phases, preceded by a scope check (Phase 0) that activates only when one request bundles several independently testable capabilities. Do not advance to the next phase until the current one is validated. ``` SPECIFY ──→ PLAN ──→ TASKS ──→ IMPLEMENT │ │ │ │ ▼ ▼ ▼ ▼ Human Human Human Human reviews reviews reviews reviews ``` ### Phase 0: Scope Check …
Read the whole file at its exact version.
How to install
mdr add b-mendoza/agent-skills/spec-driven-development@sha256:c4b97ce3d7f24be0The line at the top of this page pins the label git:20261014.c035a8b, 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_nwuyzcepqcrp2lrz)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 28, 2026 and Oct 14, 2026, about one every 19 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261014.c035a8b latest | 2026-10-14 | c035a8b | 13,096 B | A | view · diff |
| git:20261002.453b519 | 2026-10-02 | 453b519 | 12,595 B | A | view · diff |
| git:20260831.6629e32 | 2026-08-31 | 6629e32 | 12,163 B | A | view · diff |
| git:20260831.9f03b77 | 2026-08-31 | 9f03b77 | 8,625 B | A | view · diff |
| git:20260728.524a212 | 2026-07-28 | 524a212 | 8,527 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 (13096 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
b-mendoza/agent-skills · 3 stars · license none declared · pushed 2026-10-17 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nwuyzcepqcrp2lrz GET https://markdownregistry.com/api/v1/resolve?ref=b-mendoza/agent-skills/spec-driven-development GET https://markdownregistry.com/api/v1/blob/c4b97ce3d7f24be0e67fd612c7595f65504872e3a9f8d338d098b2363fdb66ef
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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