---
name: Implement Feature
slug: implement-feature
category: AI Engineering
description: Implement Feature reads a feature specification, designs architecture, writes code and tests, and prepares a structured handoff to QA. Use it when an approved feature spec is ready for implementation by the Forja (Dev) agent.
github: "https://github.com/davepoon/buildwithclaude/tree/main/plugins/agent-triforce/skills/implement-feature"
language: TypeScript
stars: 3298
forks: 459
install: "npx degit https://github.com/davepoon/buildwithclaude/tree/main/plugins/agent-triforce/skills/implement-feature ~/.claude/skills/implement-feature"
installs_to: ~/.claude/skills/implement-feature
source_path: plugins/agent-triforce/skills/implement-feature/SKILL.md
collection_size: 25
category_size: 2451
collection_url: "https://dirskills.com/collections/davepoon/buildwithclaude"
added: 2026-08-17T07:08:21.640Z
last_synced: 2026-08-17T07:08:21.640Z
canonical_url: "https://dirskills.com/skills/implement-feature"
---

# Implement Feature

Implement Feature reads a feature specification, designs architecture, writes code and tests, and prepares a structured handoff to QA. Use it when an approved feature spec is ready for implementation by the Forja (Dev) agent.

**Install:**

```bash
npx degit https://github.com/davepoon/buildwithclaude/tree/main/plugins/agent-triforce/skills/implement-feature ~/.claude/skills/implement-feature
```

## README

# Implement Feature

Implements a feature from its specification using the Forja (Dev) agent.

## When to Use This Skill

- A feature spec has been approved and is ready for implementation
- You need architecture design, code, and tests for a defined feature
- Translating product requirements into working software

## What This Skill Does

1. Runs the SIGN IN checklist and verifies the spec handoff
2. Designs architecture (creates ADR if needed)
3. Defines interfaces/contracts, then implements in `src/`
4. Writes tests in `tests/` (unit + integration)
5. Runs the Implementation Complete checklist (TIME OUT 1)
6. Runs the Pre-Delivery checklist (TIME OUT 2)
7. Prepares structured handoff to QA agent
8. Runs the SIGN OUT checklist

## How to Use

### Basic Usage

```
/implement-feature webhook-event-system
```

### With Spec Reference

```
/implement-feature docs/specs/webhook-event-system.md
```

## Example

**User**: `/implement-feature user-authentication`

**Output**:
- Implementation in `src/` with all acceptance criteria met
- Tests in `tests/` covering critical paths
- ADR if significant architecture decisions were made
- Handoff notes for QA: files changed, how to test, known limitations

## Tips

- Ensure the feature spec exists before running this skill
- The agent creates an ADR for any significant architecture decisions
- Two TIME OUT checkpoints ensure both correctness and delivery cleanliness