spec-kit

A GitHub Spec-Kit integration for specification-driven development, a way of defining requirements and an implementation plan before writing code. It provides commands for setting project rules, writing feature specifications, planning work, and checking the setup.

In plain words
What is it for?
Use it to initialize Spec-Kit, establish project principles, create branch-based feature specifications and plans, and check whether the command-line tool is installed.
Why use it?
It gives a project a documented path from idea to implementation. This makes the intended behavior and development steps easier to review before coding begins.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add Dev-GOM/claude-code-marketplace
agentmods
npx agentmods add plugins/dev-gom/claude-code-marketplace/spec-kit
Clone the repo
git clone --depth 1 https://github.com/Dev-GOM/claude-code-marketplace

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

spec-kit scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/spec-kit/.claude-plugin/plugin.json · 67 lines

What it actually says

{
  "name": "spec-kit",
  "version": "2.3.2",
  "description": "GitHub Spec-Kit integration for Specification-Driven Development - define WHAT and HOW before coding",
  "author": {
    "name": "Dev GOM",
    "url": "https://github.com/Dev-GOM/claude-code-marketplace"
  },
  "homepage": "https://github.com/Dev-GOM/claude-code-marketplace",
  "repository": "https://github.com/Dev-GOM/claude-code-marketplace.git",
  "license": "Apache-2.0",
  "keywords": [
    "productivity",
    "specification",
    "planning",
    "workflow",
    "sdd",
    "github",
    "spec-kit",
    "constitution",
    "documentation",
    "project-management"
  ],
  "commands": {
    "init": {
      "description": "spec-kit 프로젝트 초기화 및 CLI 설치 확인",
      "source": "./commands/init.md"
    },
    "check": {
      "description": "spec-kit CLI 설치 상태 확인",
      "source": "./commands/check.md"
    },
    "constitution": {
      "description": "프로젝트 원칙과 가이드라인 수립 (.specify/memory/constitution.md)",
      "source": "./commands/constitution.md"
    },
    "specify": {
      "description": "기능 명세 작성 (specs/[브랜치]/spec.md) - 브랜치 기반 워크플로우",
      "source": "./commands/specify.md"
    },
    "plan": {
      "description": "기술 계획 및 아키텍처 수립 (specs/[브랜치]/plan.md)",
      "source": "./commands/plan.md"
    },
    "tasks": {
      "description": "구현 가능한 작업 단위로 분해 (specs/[브랜치]/tasks.md)",
      "source": "./commands/tasks.md"
    },
    "implement": {
      "description": "명세와 계획을 기반으로 구현 실행",
      "source": "./commands/implement.md"
    },
    "clarify": {
      "description": "명세의 모호한 부분 명확화",
      "source": "./commands/clarify.md"
    },
    "analyze": {
      "description": "현재 명세 분석 및 검토",
      "source": "./commands/analyze.md"
    },
    "checklist": {
      "description": "구현 체크리스트 생성",
      "source": "./commands/checklist.md"
    }
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 67 lines scan A e53f923e6e26

Subscribe to this mod's changes

spec-kit is a plugin published in the GitHub repository Dev-GOM/claude-code-marketplace (97 stars, last pushed 7mo ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.