spec-kit

Name: spec-kit
Rating: 84 (1 reviews)
Author: github

github/spec-kit

Spec Kit is a toolkit implementing Spec-Driven Development (SDD) via a command-line interface called Specify CLI, allowing seamless integration with multiple AI coding assistants.

126.4k 11.3kMITUpdated 2026-08-12

Great

View on GitHub Open source file

Overview

The Spec Kit toolkit and Specify CLI help development teams establish structured workflows by creating specifications before implementing code. It provides an integration architecture where AI agents can be easily added as subpackages using base classes like MarkdownIntegration, TomlIntegration, or SkillsIntegration, paired with an IntegrationManifest system for reliable file tracking and uninstallation.

Capabilities

▸Project bootstrapping via Specify CLI
▸Integration architecture supporting markdown, toml, yaml, and skill-based agents
▸SHA-256 hash-tracked file management and safe uninstallation via IntegrationManifest
▸Opt-in agent context file management through extensions

Best for

Setting up and bootstrapping projects with Spec-Driven Development workflows, Adding support for new AI coding assistants and CLI tools via integration subpackages, Managing project directory structures and AI agent command templates reliably with uninstallation tracking

Works with

Claude CodeCodexChatGPTGemini CLICursorGitHub Copilot

Evoa Score breakdown= Σ (score × weight)

Task usefulness20%77 → +15.4

実タスクにどれだけ役立つか（機能の豊富さ・用途の明確さ）。 — AIによるcapabilities/use-cases解析

Code quality15%90 → +13.5

実装・指示の品質。 — AIによるSKILL.md/README解析

Maintenance15%100 → +15.0

リポジトリがどれだけ活発に保守されているか。 — GitHub 最終push日時の新しさ

Documentation12%34 → +4.1

ドキュメントの充実度・分かりやすさ。 — README/独自要約の情報量

Security15%100 → +15.0

危険・不審な挙動が無いか。 — AIによるセキュリティレビュー

Originality10%85 → +8.5

ありふれたラッパーではない独自性。 — AIによる独自性判定

Popularity8%100 → +8.0

コミュニティの採用度。 — GitHub Stars/Forks（対数スケール）

Compatibility5%100 → +5.0

対応AIエージェントの広さ。 — AIによる対応エージェント判定

Weighted total84.5 / 100

ライセンス不明/制限あり（Red）のSkillは総合スコアに0.85倍の補正を適用します。ランキングはこのScoreのみで決まり、広告で変わりません。算出方法の詳細 →

Security considerations

Files are tracked via SHA-256 hashes to prevent accidental overwrites or unauthorized modifications during uninstallation, ensuring user modifications are respected unless explicitly forced.