What does the Implement skill do?

The Implement skill directs an agent to implement work described by a PRD or issues using test-driven development at pre-agreed seams, running typechecking and individual test files regularly during development, then performing a full test suite run, review pass, and final commit to the current branch.

When should I use the Implement skill?

Use it when you have a defined piece of work with an existing PRD or set of issues describing what to build. It assumes requirements already exist and does not define them itself.

What are the inputs and outputs of the Implement skill?

Input is a PRD or set of issues describing the work to implement. Output is committed code on the current branch that has passed typechecking, targeted test-file runs during development, a full test suite run, and a review pass.

Skill

Implement features from PRDs with TDD and code review

Name: Implement
Availability: OnlineOnly
Author: mattpocock

A skill for implementing work from a PRD or issues, with TDD, regular test checks, a review pass, and a commit.

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Spark score

out of 100

Updated 28 days ago

Source checked Aug 24, 2026

Version 15.16.0

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Why it matters

Execute complete feature implementation from product requirements documents or issue lists, applying test-driven development at agreed boundaries and conducting automated code review before committing to the current branch.

Outcomes

What it gets done

Generate implementation code based on PRD or issue specifications

Write and run tests using TDD methodology at pre-agreed seams

Run typechecking and test suites to validate code quality

Review completed work and commit changes to current branch

Install

Add it to your toolbox

Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.

Run in your project directory:

curl -fsSL https://spark.entire.vc/get/ag-implement | bash

After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.

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Overview

Implement

This skill implements work from a PRD or issues using TDD where it fits, regular typechecking and test runs, a final full-suite run, a /review pass, and a commit. Use it when implementing a defined piece of work that already has a PRD or set of issues describing what to build.

What it does

A skill for implementing a piece of work described by a PRD or a set of issues. It directs the agent to use test-driven development where possible, at pre-agreed seams in the work, and to run typechecking and single test files regularly throughout implementation rather than only at the end. Once the full test suite passes, the skill calls for a full-suite run, then a handoff to a separate /review skill to review the completed work, and finally a commit of the work to the current branch.

When to use - and when NOT to

Use it when implementing a defined piece of work that already has a PRD or a set of issues describing what to build - it assumes the requirements exist, it does not itself define them.

Inputs and outputs

Input is a PRD or a set of issues describing the work to implement. Output is committed code on the current branch that has passed regular typechecking, targeted test-file runs during development, and a full test suite run at the end, followed by a /review pass.

Integrations

Pairs with a /tdd skill for test-driven development at pre-agreed seams, and a /review skill for reviewing the completed implementation before or as part of the commit.

Who it's for

Developers or agents implementing a scoped piece of work from an existing PRD or issue list who want a consistent discipline: TDD where it fits, regular type/test checks during development, a full suite run before finishing, a review pass, and a commit to close out the work.

FAQ

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