Build to Spec
Implements a finished spec and its tickets in code.
What it does
Implement the result of /to-spec and /ticket-splitter in code.
Install in under a minute
Mac or Linux, after you download
unzip build-to-spec.zip -d ~/.claude/skills/Windows PowerShell
Expand-Archive build-to-spec.zip -DestinationPath $HOME\.claude\skills- Start a new Claude Code session so it sees the skill.
- Ask in plain words, for example: "Use Build to Spec on this project."
- Unzip the download, then zip just the build-to-spec folder if your computer added an extra folder.
- In Claude.ai, open Settings, then Capabilities, and upload it under Skills.
- Turn the skill on and ask Claude to use it.
Build to Spec uses the open SKILL.md format, so it also works in agents like Cursor, Gemini CLI, GitHub Copilot and Codex. Copy the build-to-spec folder into that agent's skills folder, for example .cursor/skills/ or .github/skills/ in your project.
What's inside
The 1 main sections of the SKILL.md, in order.
- Steps
In the download: agents/openai.yaml, LICENSE, NOTICE.md, SKILL.md
Credit and license
Build to Spec is a renamed, packaged copy of implement-spec by Matt Pocock (github.com/mattpocock/skills), used under the MIT license. The license and a list of changes ship inside the download.
Questions
Does Build to Spec work in Claude.ai, not just Claude Code?
Yes. In Claude.ai, upload the build-to-spec folder as a zip in Settings under Capabilities. It also works in other agents that support Agent Skills, like Cursor, Gemini CLI and GitHub Copilot.
What do I get?
A zip with the build-to-spec folder: its SKILL.md (906 words) and its license files. It comes inside the Engineering Workflow Pack.
Who made Build to Spec?
It's a renamed, packaged copy of implement-spec by Matt Pocock, used under the MIT license. The license and a list of changes ship inside the download.