# Implement Feature

> Implement a feature from its specification following the PRD workflow. Use when implementing a new feature that has been specified.

- Skill: `duboc/implement-feature` (Agent Skill)
- Install (CLI): `npx skillmds@latest add duboc/implement-feature`
- Raw SKILL.md: https://api.skillmd.com/api/skills/duboc/implement-feature/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Product & Planning
- Author: duboc (https://skillmd.com/u/duboc)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/duboc/implement-feature

---


# Implement Feature

Implement a feature following the PRD-driven workflow.

## Workflow

### 1. Read Specifications
- Read `docs/specs/[feature-name].md` for requirements
- Read `docs/tasks/[feature-name]-tasks.md` for task breakdown
- Understand acceptance criteria

### 2. Check Current Progress
- Identify the next uncompleted task
- Review any blockers or dependencies
- Understand the implementation context

### 3. Implement Current Task
- Follow the task description
- Reference the architecture documentation
- Use project patterns and conventions

### 4. Write Tests
- Write unit tests for new code
- Ensure critical paths are covered
- Follow Swift Testing patterns:

```swift
@Test func testFeatureBehavior() async throws {
    // Arrange
    let viewModel = FeatureViewModel(service: MockService())

    // Act
    await viewModel.performAction()

    // Assert
    #expect(viewModel.result == expectedValue)
}
```

### 5. Build and Verify
```bash
xcodebuild -scheme MyApp \
  -destination 'platform=iOS Simulator,name=iPhone 15' \
  build

xcodebuild test \
  -scheme MyApp \
  -destination 'platform=iOS Simulator,name=iPhone 15'
```

### 6. Update Progress
- Mark task as complete in `docs/tasks/[feature-name]-tasks.md`
- Document any deviations or decisions

### 7. Wait for Approval
Stop after completing each task and wait for user approval before proceeding to the next.

## Guidelines
- Implement incrementally
- Test as you go
- Follow project architecture
- Document decisions
- Don't skip ahead