Turn your best prompt into a skill
Lesson 2 of 3 · Claude & Cowork mastery
1 · Learn the move · Tool choice + routing
A prompt you've run more than twice doesn't belong in your clipboard. It belongs in a Cowork skill you trigger by name. That's the routing call: a one-off stays in chat, a repeatable job becomes a skill. Give it a short name, a one-line 'use this when...' description, and paste your proven prompt as the instructions. The weekly lab-meeting summary you've tuned all term now runs in one click, with the grounding rules riding along.
Turn this into a Cowork skill. name: lab-meeting-summary. description: use when I need the weekly data summary for lab meeting. instructions: [paste my proven prompt]. Output it as a paste-ready SKILL.md block.
2 · Your turn. You write the prompt
Every week before lab meeting you paste the same summary prompt by hand - what was run, what the numbers were, what's queued, nothing interpreted. It works. Write the skill definition that turns it into a one-click 'lab-meeting-summary' skill you run instead of re-pasting.
Write the prompt for this scenario as given, or swap in a real one from your own work. The score works the same either way.
Remember: the AI sees only your prompt, not this page. If the situation isn't in your prompt, it doesn't exist.
Optional. These shape the output when you run your prompt below, not your score.