# Implement Feature

> Implements a feature from its specification. Reads the spec, designs architecture, writes code and tests. Delegates to the Forja (Dev) agent.

- **Type:** Skill
- **Install:** `agentstack add skill-davepoon-buildwithclaude-implement-feature`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [davepoon](https://agentstack.voostack.com/s/davepoon)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [davepoon](https://github.com/davepoon)
- **Source:** https://github.com/davepoon/buildwithclaude/tree/main/plugins/agent-triforce/skills/implement-feature
- **Website:** https://www.buildwithclaude.com

## Install

```sh
agentstack add skill-davepoon-buildwithclaude-implement-feature
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# 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

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [davepoon](https://github.com/davepoon)
- **Source:** [davepoon/buildwithclaude](https://github.com/davepoon/buildwithclaude)
- **License:** MIT
- **Homepage:** https://www.buildwithclaude.com

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-davepoon-buildwithclaude-implement-feature
- Seller: https://agentstack.voostack.com/s/davepoon
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.