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Enforces the creation of a clear, actionable specification before any implementation code is written. Prevents hallucinations and architectural drift.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Turns real agent failures, repeated prompts, team-specific workflows, and durable project lessons into better SDD skills or memory entries. Use when the user asks to create/update/refine skills, extract reusable lessons, improve skill routing, encode team process, or save patterns for future sessions.
Provides the vendored agent-style v0.3.5 prose rule pack as a portable Claude skill. Use when installing, syncing, applying, or auditing SDD Agent-Style support in another project, or when a style-review workflow needs the bundled rules.
Reviews Markdown prose against the pinned agent-style v0.3.5 rules and optionally writes a polished copy beside the source. Use for specs, ADRs, PR bodies, release notes, and technical docs when prose quality or evidence discipline matters.
Scans Markdown (.md) files for malicious code injection including XSS, prompt injection, script injection, obfuscated payloads, and supply chain attack vectors. Use when auditing .md files for security threats or when the user mentions scanning markdown for malicious content.
Provides .NET and ASP.NET Core patterns for REST APIs, Entity Framework, dependency injection, and middleware. Use when working with C# files (*.cs, *.csproj) or when the user mentions .NET, ASP.NET Core, C#, or Entity Framework.
Designs hybrid cloud architectures connecting on-premises infrastructure with public cloud services. Use when designing systems spanning on-prem and cloud, or when the user mentions hybrid cloud or multi-environment architecture.
| name | spec-driven-development |
| type | workflow |
| description | Enforces the creation of a clear, actionable specification before any implementation code is written. Prevents hallucinations and architectural drift. |
| argument-hint | [feature-description-or-issue] |
| user-invocable | true |
| allowed-tools | Read, Glob, Grep, WebSearch |
| context | fork |
| effort | 3 |
| agent | lead-programmer |
| when_to_use | When starting a new feature, doing major architectural refactoring, receiving a complex prompt, or when the user invokes /spec. |
This skill forces the agent to pause, analyze, and agree upon a specification before jumping into implementation code. Drafting a spec first prevents hallucinations, scopes down overly ambitious changes, and protects the codebase's existing architecture.
ABSOLUTE DIRECTIVE: You are an Agent. You MUST NOT start writing implementation files (.ts, .js, .py, etc.) until you have completed this workflow.
Read, Glob, or Grep to understand the system boundaries.[ ] Task 1: ...[ ] Task 2: ...Be aware of lazy logic that an Agent typically uses to skip this step. If a thought on the left occurs, YOU MUST apply the rebuttal on the right:
| Excuse (Agent's Lazy Rationalization) | Rebuttal & Correct Action |
|---|---|
| "This is a tiny change, no need for a massive spec." | REJECTED. Even a 1-line change needs a quick confirmation. Reply with: "I will modify X to do Y. Shall I proceed?" |
| "The user is rushing and wants code immediately." | REJECTED. Hasty code causes bugs and frustrates users more. Write a "Fast-Spec" with just 3 bullet points outlining the action and side-effects. |
| "I understand the request perfectly. I'll just write all 3 files at once in this single turn." | REJECTED. High complexity requires phased execution. Write the spec, break it down, and execute sequentially focusing on one atomic task at a time. |
Do not conclude your first interaction turn unless you have fulfilled the following:
test-driven-development — Invoked immediately after the Spec is approved to implement Task 1 using the Red-Green-Refactor cycle.planning-and-task-breakdown — Used for ultra-large epics that need more project management rather than technical specs.