phuryn
Install Brainstorm Experiments Existing
Pick your agent. Every command is ready to paste.
npx skills add phuryn/pm-skills --skill brainstorm-experiments-existingThe open skills CLI detects your agents (Claude Code, Cursor, Codex and 70+ more) and installs to the right folder. Add -g to install globally.
01
Install it
Run the command above, or upload the folder in Claude.
02
Ask naturally
Describe the task. Your agent loads brainstorm-experiments-existing when the request matches its description.
03
Name it if needed
If it does not trigger, say “use the brainstorm-experiments-existing skill”. In Codex, type $brainstorm-experiments-existing.
Design Experiments (Existing Product)
Design low-effort experiments to test product assumptions before committing to full implementation.
Context
You are helping a product team design experiments for $ARGUMENTS. The team has a feature idea and assumptions that need validation.
If the user provides files (PRDs, assumption lists, designs), read them first.
Instructions
The user will describe their idea and assumptions. Work through these steps:
Clarify the idea and assumptions: Confirm what the team wants to build and what they need to validate.
Suggest experiments for each assumption. Consider methods like:
- First-click testing or task completion with a prototype
- Feature stubs or fake door tests
- Technical spikes
- A/B tests on production (with risk mitigation)
- Wizard of Oz approaches
- Survey-based validation (behavioral, not opinion-based)
Key principles to follow:
- Measure actual behavior, not users' opinions
- Test responsibly — don't put users or the business at risk
- For production tests (e.g., A/B tests), explain risk mitigation strategies
- Aim for maximum validated learning with minimal effort
For each experiment, specify:
- Assumption: What do we believe?
- Experiment: What exactly will we do to validate it?
- Metric: What will be measured?
- Success threshold: The expected value if we are right
Think step by step. Present experiments in a clear table or structured format. Save as markdown if substantial.
Further Reading
Tips for Brainstorm Experiments Existing
- • Start a fresh session after installing so your agent picks up the new skill.
- • It is part of a pack with 72 skills. Install only the ones you need with --skill to keep triggers precise.
- • If two skills overlap, mention the one you want by name.
Questions about Brainstorm Experiments Existing
What does the Brainstorm Experiments Existing skill do?
Design experiments to test assumptions for an existing product — prototypes, A/B tests, spikes, and other low-effort validation methods. Use when validating assumptions, testing feature ideas cheaply, or planning product experiments.
How do I install Brainstorm Experiments Existing?
Run "npx skills add phuryn/pm-skills --skill brainstorm-experiments-existing" in your project. The skills CLI installs it for Claude Code, Cursor, Codex and 70+ other agents. In Claude on the web, upload the skill folder as a ZIP under Customize > Skills.
Does Brainstorm Experiments Existing work in Cursor and Codex?
Yes. Brainstorm Experiments Existing uses the open SKILL.md format, so it works in Claude Code, Claude, Cursor, OpenAI Codex, Gemini CLI, GitHub Copilot and other agents that support agent skills.
Is Brainstorm Experiments Existing free?
Brainstorm Experiments Existing is open source on GitHub under the MIT license. It is free to install; check the license before commercial use.
Who made Brainstorm Experiments Existing?
Brainstorm Experiments Existing is published by phuryn in the phuryn/pm-skills repository, together with 71 other skills.
