Review Spd
zhu1090093659/spec_driven_develop
Findings-first code review workflow for AI coding agents. An agent skill from zhu1090093659/spec_driven_develop.
Spec-Driven Development (SDD) methodology based on GitHub's SpecKit.
Install Spec Driven Development
$ npx skills add aiskillstore/marketplace --skill spec-driven-development -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace spec-driven-development --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/89jobrien/spec-driven-development .claude/skills/spec-driven-development && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "spec-driven-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/89jobrien/spec-driven-development into .claude/skills/spec-driven-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-driven-development", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/89jobrien/spec-driven-developmentType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill spec-driven-development -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace spec-driven-development --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/89jobrien/spec-driven-development .agents/skills/spec-driven-development && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "spec-driven-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/89jobrien/spec-driven-development into .agents/skills/spec-driven-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-driven-development", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill spec-driven-development -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace spec-driven-development --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/89jobrien/spec-driven-development .cursor/skills/spec-driven-development && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "spec-driven-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/89jobrien/spec-driven-development into .cursor/skills/spec-driven-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-driven-development", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/89jobrien/spec-driven-development--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill spec-driven-development -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace spec-driven-development --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/89jobrien/spec-driven-development .gemini/skills/spec-driven-development && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "spec-driven-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/89jobrien/spec-driven-development into .gemini/skills/spec-driven-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-driven-development", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace spec-driven-developmentInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill spec-driven-development -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/89jobrien/spec-driven-development .github/skills/spec-driven-development && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "spec-driven-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/89jobrien/spec-driven-development into .github/skills/spec-driven-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-driven-development", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill spec-driven-development -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace spec-driven-development --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/89jobrien/spec-driven-development .opencode/skills/spec-driven-development && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "spec-driven-development" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/89jobrien/spec-driven-development into .opencode/skills/spec-driven-development/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-driven-development", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
spec-driven-development- GitHub stars
- 430
- Used in
- 1 other repo
- Token cost
- ~3.5k tokens
- SKILL.md length
- 1,337 words
- Files
- 2
- Skills in repo
- 1,085
- Repo updated
- First seen
- Licence
- None found
At a glance
Spec-Driven Development (SDD) methodology based on GitHub's SpecKit.
- Works in 8 steps: Project Initialization → Constitution → Specification → …
- Structured AI-assisted development with constitutional governance
- SKILL.md covers Core Philosophy, When to Use This Skill, The 7-Phase Workflow and Orchestration & Parallel…, plus 5 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Spec Driven Development is an agent skill from aiskillstore/marketplace. Spec-Driven Development (SDD) methodology based on GitHub's SpecKit. Use for structured AI-assisted development with constitutional governance, phased workflows, and multi-agent coordination. Implements 7-phase process from constitution to implementation.
Its SKILL.md is about 3.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill-report.json`).
It sits in Development, covering Spec-driven development. It works with GitHub. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Structured AI-assisted development with constitutional governance
- Phased workflows
- Multi-agent coordination
Example prompts
- “/spec-driven-development”
Workflow steps
8 steps, taken from the step headings in SKILL.md.
- Project Initialization
- Constitution
- Specification
- Clarification
- Planning
- Analysis
- Task Breakdown
- Implementation
What it can do on your machine
Read from SKILL.md and the folder at commit 4ac52da. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Spec Driven Development loads about 3.5k tokens when it runs. Until then it costs about 70 tokens; SKILL.md has 1,337 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 1,337 words (~3,460 tokens).
“This skill implements GitHub's SpecKit methodology for structured, AI-assisted software development. SpecKit transforms specifications into executable artifacts through a systematic, phase-based approach with built-in quality gates and multi-agent coordination.”
- name
- spec-driven-development
- author
- Joseph OBrien
- status
- unpublished
- updated
- 2025-12-23
- version
- 1.0.1
- tag
- skill
- type
- skill
Files
SKILL.md and 1 other file in skills/89jobrien/spec-driven-development of aiskillstore/marketplace.
- SKILL.md
- skill-report.json
Open the folder on GitHubat commit 4ac52da
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Spec Driven Development next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Spec Driven Development this skillaiskillstore/marketplace | 430 | 1 repos | ~3.5k | Automated safety check: Pass | None | |
| Review Spdzhu1090093659/spec_driven_develop | 983 | — | ~1.5k | Automated safety check: Pass | MIT | |
| React Router RFC Implementerremix-run/react-router | 57k | — | ~2.3k | Automated safety check: Pass | MIT | |
| Spec Driven Developzhu1090093659/spec_driven_develop | 983 | — | ~5.1k | Automated safety check: Pass | MIT | |
| SddSpillwaveSolutions/sdd-skill | 105 | — | ~5.7k | Automated safety check: Pass | MIT | |
| Speckit Taskstoissueskunstmusik/blue | 154 | 17 repos | ~2k | Automated safety check: Pass | GPL-3.0 |
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Related
Works with
Categories
Questions about Spec Driven Development
What does Spec Driven Development do?
Spec-Driven Development (SDD) methodology based on GitHub's SpecKit. Spec Driven Development is an agent skill from aiskillstore/marketplace. Spec-Driven Development (SDD) methodology based on GitHub's SpecKit.
When should I use Spec Driven Development?
Spec Driven Development fits situations like: structured AI-assisted development with constitutional governance; phased workflows; multi-agent coordination.
How do I install Spec Driven Development in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill spec-driven-development -a claude-code`. Or copy the skill folder (skills/89jobrien/spec-driven-development in aiskillstore/marketplace) into .claude/skills/spec-driven-development in your project. Claude Code loads it when a task matches its description.
How do I install Spec Driven Development in Codex?
Run `npx skills add aiskillstore/marketplace --skill spec-driven-development -a codex`. Or copy the skill folder (skills/89jobrien/spec-driven-development in aiskillstore/marketplace) into .agents/skills/spec-driven-development in your project. Codex loads it when a task matches its description.
Can I use Spec Driven Development in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill spec-driven-development -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spec-driven-development, .gemini/skills/spec-driven-development, .github/skills/spec-driven-development and .opencode/skills/spec-driven-development in your project.
What does Spec Driven Development need to run?
SKILL.md names no scripts, command-line tools or credentials: Spec Driven Development is instructions for the agent only.
Does Spec Driven Development access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Spec Driven Development safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Spec Driven Development use?
No licence was found for Spec Driven Development or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Spec Driven Development use?
About 3.5k tokens (SKILL.md is roughly 14k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Spec Driven Development?
Skills that share tags, products or a category with Spec Driven Development: Review Spd (zhu1090093659/spec_driven_develop, 983 stars), React Router RFC Implementer (remix-run/react-router, 57k stars), Spec Driven Develop (zhu1090093659/spec_driven_develop, 983 stars) and Sdd (SpillwaveSolutions/sdd-skill, 105 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Spec Driven Development?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,085 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.