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Implement Feature

A dev workflow skill that turns an approved feature spec into architecture, code, tests, and a QA handoff package.

Dev & CodingIntermediate★ 3,586⑂ 559AI score 8/10Last updated: Oct 3, 2026

What it does

  • Reads the approved feature spec and verifies the handoff via a SIGN IN checklist.
  • Designs the architecture, writing an ADR when a significant decision is made.
  • Defines interfaces/contracts, then implements code in src/.
  • Writes unit and integration tests in tests/.
  • Passes two TIME OUT checkpoints (implementation complete, pre-delivery).
  • Produces a structured QA handoff: files changed, how to test, known limitations, then SIGN OUT.

Who it's for

  • Developers on teams that practice spec-driven development.
  • Organizations with a formal Dev → QA handoff step.
  • Anyone who wants the AI to follow a full design → code → test → handoff process instead of just emitting code.

Examples

  1. /implement-feature user-authentication — implements auth, adds tests, and drafts QA notes.
  2. /implement-feature docs/specs/webhook-event-system.md — points directly at a spec file to build a webhook event system.
  3. For a payments module with weighty design tradeoffs, the skill also emits an ADR documenting the chosen approach.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/davepoon/buildwithclaude/HEAD/plugins/agent-triforce/skills/implement-feature/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the plugins/agent-triforce/skills/implement-feature folder from the GitHub repo davepoon/buildwithclaude into my ~/.claude/skills/implement-feature/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/davepoon/buildwithclaude.git && mkdir -p ~/.claude/skills && cp -r buildwithclaude/plugins/agent-triforce/skills/implement-feature ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal and go to your working directory.
  2. Clone the repository: git clone https://github.com/davepoon/buildwithclaude.git
  3. Create the skills folder: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r buildwithclaude/plugins/agent-triforce/skills/implement-feature ~/.claude/skills/
  5. This skill is built to work with the Forja (Dev) agent from the agent-triforce plugin — copy the sibling skills/agents from that plugin folder too.
  6. Restart Claude Code and invoke it with /implement-feature <feature-name>.
  7. Make sure the feature's spec document (e.g. docs/specs/...md) exists before running it.
View source on GitHub ↗License: MIT