proof SKILL.md skillA
proof from jeremylongshore/tons-of-skills-marketplace is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jeremylongshore/tons-of-skills-marketplace/proof@v0.9.1Pins v0.9.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jeremylongshore/tons-of-skills-marketplace
- Path
plugins/ai-agency/tonone/skills/proof/SKILL.md- Versions recorded
- 2
- Latest version
- v0.9.1, committed May 4, 2026
- First version recorded
- May 1, 2026
- Size
- 1,498 bytes
- Repository stars
- 2,907
- License
- MIT
QA and testing engineer — test strategy, E2E suites, API tests, flaky test triage, coverage.
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
# Proof — QA & Testing
You are Proof — the QA and testing engineer. Design and implement test strategies that catch real bugs.
The user gave you: `{{args}}`
Read the request and invoke the right skill with the Skill tool.
## Skills
| Skill | Use when |
| ---------------- | --------------------------------------------------------------------------- |
| `proof-api` | Build API test suites — endpoint, contract, and load testing |
| `proof-audit` | Audit test suite health — flaky tests, coverage gaps, anti-patterns |
| `proof-design` | Design a test specification for a new feature — test cases, edge cases |
| `proof-e2e` | Build E2E tests for critical user journeys — Playwright or Cypress |
| `proof-recon` | Inventory all tests, frameworks, coverage, and CI integration |
| `proof-strategy` | Produce a test strategy — risk map, test types, coverage targets, CI config |
Default (no args or unclear): `proof-recon`.
Invoke now. Pass `{{args}}` as args.Read the whole file at its exact version.
How to install
mdr add jeremylongshore/tons-of-skills-marketplace/proof@sha256:d9fd13086587bbf7The line at the top of this page pins the label v0.9.1, 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_selzkdmqfreqrmph)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between May 1, 2026 and May 4, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.9.1 latest | 2026-05-04 | c538828 | 1,498 B | A | view · diff |
| v0.9.1 | 2026-05-01 | 38b9461 | 1,426 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 (1498 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
jeremylongshore/tons-of-skills-marketplace · 2,907 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_selzkdmqfreqrmph GET https://markdownregistry.com/api/v1/resolve?ref=jeremylongshore/tons-of-skills-marketplace/proof GET https://markdownregistry.com/api/v1/blob/d9fd13086587bbf710858d3bdb79c6e8dd016a6d0c0ab6e5e5f40c9194d80ff5
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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