---
title: "Test Master - Air Market"
description: "You have tests but no real confidence in them, or you need tests and do not know where to start. This writes them, works out what is not covered, and helps you decide what is worth testing. Reach for…"
canonical: "https://airmarket.ai/app/test-master"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Test Master

Skill by [Jeffallan](/@jeffallan)

# Test Master

For the suite that passes and still misses things

## What this does

You have tests but no real confidence in them, or you need tests and do not know where to start. This writes them, works out what is not covered, and helps you decide what is worth testing. Reach for it when a test fails at random, when coverage looks thin, or when a release needs a plan behind it.

### Top 3 things it does for you

- Write unit, integration or end-to-end tests
- Find the gaps in your coverage
- Work out why a test is flaky

## Information

**Test Master at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Jeffallan](/@jeffallan) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Version | 1.1.1 |
| Size | 46 KB |
| Licence | MIT |
| Repository | [Jeffallan/claude-skills](https://github.com/Jeffallan/claude-skills/tree/5e8b6b8ff4007414f91f980771047b6136600c34/skills/test-master) |
| GitHub stars | 11,146 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Test Master and flagged nothing. AIR's verdict: **safe**.

**What Test Master's check was run against**

|  |  |
| --- | --- |
| Commit | 5e8b6b8ff4007414f91f980771047b6136600c34 |
| Content hash | 299a0007cf02a428128c47e95a282f4d8a4d2e576582541dd6cf0eb07efbda29 |
| Files read | [Browse the files at this exact commit](https://github.com/Jeffallan/claude-skills/blob/5e8b6b8ff4007414f91f980771047b6136600c34/skills/test-master/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Test Master](/security/test-master)

## About Test Master

This generates test files, creates mocking strategies, analyzes code coverage, designs test architectures, and produces test plans and defect reports across functional, performance and security testing.

Use it for unit, integration or end-to-end tests, for building test strategies and automation frameworks, for finding coverage gaps, or for debugging flaky tests. Performance testing with k6 or Artillery and security testing with OWASP methods are both covered.

It also fits wider QA work: regression testing, test automation, quality gates, shift-left testing and test maintenance.

## What's inside

- SKILL.md - instructions
- references/automation-frameworks.md - reference
- references/e2e-testing.md - reference
- references/integration-testing.md - reference
- references/performance-testing.md - reference
- references/qa-methodology.md - reference
- references/security-testing.md - reference
- references/tdd-iron-laws.md - reference
- references/test-reports.md - reference
- references/testing-anti-patterns.md - reference
- references/unit-testing.md - reference

## Questions

### Is Test Master safe to install?

AIR scanned this exact version of Test Master and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 5e8b6b8ff400, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/test-master.

### How do I install Test Master?

Open https://airmarket.ai/app/test-master on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/Jeffallan/claude-skills/tree/5e8b6b8ff4007414f91f980771047b6136600c34/skills/test-master. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Jeffallan](/@jeffallan)

---

Canonical URL: <https://airmarket.ai/app/test-master>