Prove It Works (pstack)
Before declaring done, verify the real artifact (run the feature, read the actual value, inspect the diff), not a proxy, self-report or 'it compiles'. Prefer a rerunnable script whose output is kept as an artifact.
proof: logsproof: CI artifact blocks: claims done without running checksblocks: proxy check instead of the real thing
Source
https://github.com/cursor/plugins/tree/main/pstack/skills/principle-prove-it-worksChecked 2026-10-16. Read the original before installing.
By harness
| Harness | Status | How |
|---|---|---|
| Cursor | native | Native principle skill, always applied in poteto-mode. |
| Claude Code | untested | SKILL.md format is compatible, but the skill references Cursor paths (.cursor/skills, ~/.cursor/rules) and the Task tool. Untested. |
| Grok Build | untested | Grok reads SKILL.md folders; Cursor-specific paths would need rewriting. Untested. |
| Codex | untested | Untested. |
| AGENTS.md generic | untested | Untested. |
By model family
| Claude | untested |
| GPT | untested |
| Grok | untested |
| Gemini | untested |
Sponsor slot: your verification tool here, one sponsor per week. Details
Proof of the week
One verification pattern every week, adapted per harness and model. No spam.