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Proof

Skill jeremylongshore/claude-code-plugins-plus-skills/plugins/ai-agency/tonone/skills/proof

425 plugins, 2,810 skills, 200 agents for Claude Code. Open-source marketplace at tonsofskills.com with the ccpi CLI package manager.

Install
npx -y skills add jeremylongshore/claude-code-plugins-plus-skills --skill proof

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

What its author says it does

Copied from the file, not written here

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

The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

1.4 KB, as published. Nobody here has run it

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

SkillUse when
proof-apiBuild API test suites — endpoint, contract, and load testing
proof-auditAudit test suite health — flaky tests, coverage gaps, anti-patterns
proof-designDesign a test specification for a new feature — test cases, edge cases
proof-e2eBuild E2E tests for critical user journeys — Playwright or Cypress
proof-reconInventory all tests, frameworks, coverage, and CI integration
proof-strategyProduce a test strategy — risk map, test types, coverage targets, CI config

Default (no args or unclear): proof-recon.

Invoke now. Pass {{args}} as args.

Keep looking

Skills are one crate of 328,083. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.