Spike It
Builds a throwaway prototype to answer one design question.
What it does
Build a throwaway prototype to answer a design question. Use when the user wants to sanity-check whether a state model or logic feels right, or explore what a UI should look like.
Install in under a minute
Mac or Linux, after you download
unzip spike-it.zip -d ~/.claude/skills/Windows PowerShell
Expand-Archive spike-it.zip -DestinationPath $HOME\.claude\skills- Start a new Claude Code session so it sees the skill.
- Ask in plain words, for example: "Use Spike It on this project."
- Unzip the download, then zip just the spike-it 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.
Spike It uses the open SKILL.md format, so it also works in agents like Cursor, Gemini CLI, GitHub Copilot and Codex. Copy the spike-it folder into that agent's skills folder, for example .cursor/skills/ or .github/skills/ in your project.
What's inside
The 2 main sections of the SKILL.md, in order.
- Pick a branch
- Rules that apply to both
In the download: agents/openai.yaml, LICENSE, LOGIC.md, NOTICE.md, SKILL.md, UI.md
Credit and license
Spike It is a renamed, packaged copy of prototype 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 Spike It work in Claude.ai, not just Claude Code?
Yes. In Claude.ai, upload the spike-it 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 spike-it folder: its SKILL.md (3,099 words) and its license files. One payment, instant download.
Who made Spike It?
It's a renamed, packaged copy of prototype by Matt Pocock, used under the MIT license. The license and a list of changes ship inside the download.