spec-driven-development SKILL.md skillA
spec-driven-development from maquina-app/rails-claude-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add maquina-app/rails-claude-code/spec-driven-development@git:20260714.5d91808Pins git:20260714.5d91808 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- maquina-app/rails-claude-code
- Path
spec-driven-development/skills/spec-driven-development/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260714.5d91808, committed Jul 14, 2026
- Size
- 14,345 bytes
- Repository stars
- 48
- License
- MIT
A Rails-focused spec-driven development workflow for building features with AI agents. Use this skill when users want to plan features, write specs, create task breakdowns, or generate implementation prompts for Rails apps. Triggers on "sdd", "spec-driven", "shape spec", "create tasks", "initialize SDD", "feature planning", "implementation prompts", or any request to systematically plan and implement a Rails feature. Also triggers when moving from MVP documentation to implementation planning.
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 A lightweight workflow for building production-quality Rails features with AI agents through systematic planning and self-contained specs. Each spec is designed to be **picked up and executed independently** by Claude Code or a subagent — no extra context needed beyond the spec folder itself. Each phase is driven by a `/sdd-*` slash command (see the **Commands** table at the end). The phase sections below are the reference each command follows — read them when running a phase, whether the user typed the command or asked in natural language. ## Quick Start **New Rails Project (from MVP docs):** 1. `/sdd-init` — creates `sdd/` with pre-built Rails standards + index 2. `/sdd-plan` — convert MVP docs → product planning files 3. For each feature: `/sdd-shape` → `/sdd-tasks` → hand off to Claude Code **Adding Features to Existing App:** 1. `/sdd-init` (if no `sdd/` yet) 2. `/sdd-discover-standards` — capture patterns from the codebase 3. `/sdd-shape` → `/sdd-tasks` → hand off to Claude Code --- ## Directory Structure ``` sdd/ ├── product/ │ ├── mission.md # Product vision, users, problems …
Read the whole file at its exact version.
How to install
mdr add maquina-app/rails-claude-code/spec-driven-development@sha256:8f3e14fdfb7c12e2The line at the top of this page pins the label git:20260714.5d91808, 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_mvclhmtrw6tqp3c5)
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Versions
The registry has recorded 1 version of this file, committed on Jul 14, 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 (14345 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
maquina-app/rails-claude-code · 48 stars · license MIT · pushed 2026-10-16 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mvclhmtrw6tqp3c5 GET https://markdownregistry.com/api/v1/resolve?ref=maquina-app/rails-claude-code/spec-driven-development GET https://markdownregistry.com/api/v1/blob/8f3e14fdfb7c12e27724adb6af3a7afe7c0cabfa79e25e2a20677d9295f298ce
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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