feature-implement

Advancedworkflow

Mission

Build new tools or features end-to-end: requirements → design → code → tests → docs.

When to Use

Use when building a new tool, feature, endpoint, agent, workflow component, or capability from scratch. Covers the full lifecycle: requirements gathering, design decisions, code structure, tests, governance checks, and documentation.

Triggers: “build this”, “add a new”, “create a tool”, “implement feature”, “new functionality”

Skills Invoked

• req-analysis + req-acceptance-criteria — requirements clarification
• arch-system — structural design decision
• doc-generator — inline documentation
• qual-code-analysis — post-implementation quality check

Chain-To

• test-verify — write and run tests for the new feature
• code-review — quality and security review

Example

{
  "request": "Add a rate-limiting middleware to the Express API with Redis backing"
}

Output: Implementation plan, code files with inline docs, unit tests, and a chain recommendation to test-verify.

Pattern Note

feature-implement follows Pattern 2 — Draft → Review Chain:

1. GPT-4.1 — fast mechanical first draft
2. Claude Sonnet 4.6 — correctness and security review
3. GPT-4.1 — apply review notes, finalize