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Proof Agent Skill

by jeremylongshore

QA and testing engineer — test strategy, E2E suites, API tests, flaky test triage, coverage.

356 tokens
context cost
SKILL.md, read when the skill is used
1
files
instructions only
0
copies elsewhere
how many repositories repackaged it
2 679
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository 
npx skills add https://github.com/jeremylongshore/tons-of-skills-marketplace --skill proof

What it tells the agent to use

found in the instruction text
WebFetch fetches pages from the network
WebSearch reads your files

The instruction itself

2 sections, as written by the author

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.

How to use it

Copy the folder

Take jeremylongshore/proof from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.