All 94 skillsPlan and decide5 of 15
stryx:prototype
You need to click through a throwaway version before deciding how something should work or feel.
/stryx:prototypeInside its piece: 13 specks, one for each file on its shelf. Its fourteen group-mates glow on the open book behind it. The light splits toward red, the band of Plan and decide.
In numbers
counted 2026-10-12 in the installed set- 9reference files
- 2helper scripts
- 13files in the skill
- 122KB on disk
- 2chapters
Use it when
in the skill’s own words- When a product choice about how something should work, feel or read is expensive to get wrong and neither talk nor a rough one-decision sketch can settle it, so the user needs to drive or see a throwaway version first
- Triggers include
- "prototype this"
- "let me try it before we build it"
- "mock it up so I can click through it"
- "which of these feels better"
- "I need to see it at real finish before I decide"
- "explore how this interaction could work"
- a flow
- state model
- control behavior
- layout
- density or visual direction that has to be judged hands-on
- stryx:brainstorm or stryx:taskmaster handing over an open feel question
- a visual probe that did not settle a decision
Not for
another skill does it- Rough sketches during a brainstorm→ stryx:brainstorm
- Deciding what to build→ stryx:ideate, stryx:brainstorm
- Technical feasibility spikes→ stryx:brainstorm
- Polishing a working feature→ stryx:design
- Comparing agent-built implementations→ stryx:bakeoff
- Building the real thing→ stryx:execute
On its shelf
13 files, 122 KB- references/9
- scripts/2
- SKILL.md1
- evals/1
Inside the book
2 chapters, by title only- Core procedure
- Commands
Works with
the skills it names most- stryx:brainstorm→You want something new built: it agrees what to build before any code is written.
- stryx:design→When making anything you see: a screen, website, dashboard, logo, icon set, slides or charts.
- stryx:taskmaster→When an agreed spec must become a step-by-step plan, a roadmap or a sprint.
- stryx:ai-power→When you are not sure which skill fits, or you say "load aipower": it is the map of all skills.
- stryx:bakeoff→When two or more very different approaches must each be drafted before you can choose.
- stryx:execute→When a written plan must be carried out to the end, or you say "keep going until it passes".
Claude loads it by itself when the moment comes; by hand, type the line at the top. It comes with the whole set: Installs all 94 skills, 32 agents and the brain program as one set. The skill’s own text is private source and is not shown here.