Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the actual value, inspect the diff), not a proxy, self-report, or 'it compiles.'.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Prove It Works
In Claude Code, read [the Claude Code adapter](../../docs/harness/claude-code.md) once per session before you follow this skill. It maps the Cursor names in pstack skills to Claude Code.
Verify every task output by checking the real thing directly. Do not infer from proxies, self-reports, or "it compiles."
**Why:** Unverified work has unknown correctness. Indirect verification (file mtimes, output freshness, agent self-reports, cached screenshots) feels cheaper than direct observation. Acting on a wrong inference costs far more than checking the source.
Check the real thing, not a proxy:
- Check process liveness directly, not indirectly through derived state
- Read the actual value, not a cached or derived representation
- When verification fails, suspect the observation method before suspecting the system
## Script the check when you can
The strongest proof is a deterministic script that re-runs the same comparison, not a one-time eyeball. Write the script, run it, and keep its output as an artifact a reviewer can re-run instead of trusting your word.
…
The line at the top of this page pins the label git:20261016.182f2ce, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_im2dtnsj3vzt7e6d
GET https://markdownregistry.com/api/v1/resolve?ref=cursor/plugins/principle-prove-it-works
GET https://markdownregistry.com/api/v1/blob/d3912cce868a276ce611eb08178311958e5df929b0a4e5340f1afa4774be81f2
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
cursor/plugins · advisor/skills/advisor/SKILL.md · Advisor mode. Consult a stronger (or different) model at key checkpoints: before major decisions, when stuck on an…
cursor/plugins · agent-compatibility/skills/check-agent-compatibility/SKILL.md · Run the full repository compatibility pass: scanner score, startup path, validation loop, and docs reliability.
cursor/plugins · cli-for-agent/skills/cli-for-agents/SKILL.md · Designs or reviews CLIs so coding agents can run them reliably: non-interactive flags, layered --help with examples…
cursor/plugins · create-plugin/skills/create-plugin-scaffold/SKILL.md · Create a new Cursor plugin scaffold with a valid manifest, component directories, and marketplace wiring. Use when…
cursor/plugins · create-plugin/skills/review-plugin-submission/SKILL.md · Audit a Cursor plugin for marketplace readiness. Use when validating manifests, component metadata, discovery paths…
cursor/plugins · cursor-sdk/skills/cursor-sdk/SKILL.md · Guide users building apps, scripts, CI pipelines, or automations on top of the Cursor TypeScript SDK (`@cursor/sdk`)…
cursor/plugins · cursor-team-kit/skills/control-cli/SKILL.md · Build or adapt a local harness to drive, inspect, and profile an interactive CLI or TUI without external services. Use…
cursor/plugins · cursor-team-kit/skills/control-ui/SKILL.md · Build or adapt a local browser/CDP harness to drive and inspect a web, IDE, or Electron UI. Use for local UI…
cursor/plugins · pstack/skills/principle-prove-it-works/SKILL.md · Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the…
michael-denyer/pstack-claude · plugins/pstack/skills/principle-prove-it-works/SKILL.md · Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the…
backnotprop/pstack · skills/principle-prove-it-works/SKILL.md · Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the…
j-star-films-studios/vibecode-protocol-suite · assets/.agent/skills/engineering-principles/prove-it-works/SKILL.md · Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the…
creedants/pstack-t3 · skills/principle-prove-it-works/SKILL.md · Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the…
arjitj2/open-pstack · plugins/pstack/skills/principle-prove-it-works/SKILL.md · Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the…
painhardcore/pstack · .opencode/skills/principle-prove-it-works/SKILL.md · Apply after completing a task, before declaring done. Verify against the real artifact (run the feature, read the…
shiwenbin1617/pstack · skills/principle-prove-it-works/SKILL.md · Choose evidence that verifies the changed behavior and supports the completion claim.
