principle-prove-it-works SKILL.md skillA
principle-prove-it-works from michael-denyer/pstack-claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add michael-denyer/pstack-claude/principle-prove-it-works@git:20261016.963781dPins git:20261016.963781d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- michael-denyer/pstack-claude
- Path
plugins/pstack/skills/principle-prove-it-works/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261016.963781d, committed Oct 16, 2026
- First version recorded
- Jun 4, 2026
- Size
- 2,435 bytes
- Repository stars
- 3,776
- License
- MIT
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 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 - Before you report success (merged, sent, started), read the real state and the exit code. Truncated output (`| tail -1`) and your own echo prove nothing Verify the process as well as the outcome. A correct result can rest on a broken process, and a review that checks results passes it: a clause reconstructed from the user's paste instead of the durable record, a constraint honored by chance from a file never read. For each fact you relied on, name the record it came from and confirm that record is the one the project's rules point at. …
Read the whole file at its exact version.
How to install
mdr add michael-denyer/pstack-claude/principle-prove-it-works@sha256:d5ad4e2fe1fe0fe5The line at the top of this page pins the label git:20261016.963781d, 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.
[](https://markdownregistry.com/a/art_3anxjjftz7ernxge)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jun 4, 2026 and Oct 16, 2026, about one every 27 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.963781d latest | 2026-10-16 | 963781d | 2,435 B | A | view · diff |
| git:20260923.4a3ef20 | 2026-09-23 | 4a3ef20 | 2,280 B | A | view · diff |
| git:20260907.ebb8c27 | 2026-09-07 | ebb8c27 | 2,788 B | A | view · diff |
| git:20260907.c81549e | 2026-09-07 | c81549e | 2,977 B | A | view · diff |
| git:20260715.5debf23 | 2026-07-15 | 5debf23 | 2,059 B | A | view · diff |
| git:20260604.d869e0a | 2026-06-04 | d869e0a | 2,068 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2435 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
michael-denyer/pstack-claude · 3,776 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3anxjjftz7ernxge GET https://markdownregistry.com/api/v1/resolve?ref=michael-denyer/pstack-claude/principle-prove-it-works GET https://markdownregistry.com/api/v1/blob/d5ad4e2fe1fe0fe5fd7f96ef117ed435a55a536bb1f2ce353c105c31239c0635
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.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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