# contract-testing

Skill · `skill:contract-testing`

Favz census, built 2026-09-30. Tool names and counts only. No repo names. HTML page: https://favz.co/tools/skill-contract-testing.html

- Repos that have it now: 22
- Repos that ever had it: 24
- Still have it: 92%
- Share of census repos with any tool: 0.06%

## Repos with it, by month

From commit dates in each repo's history. The last few days always look low, because repos found later fill them in.

| Month | Repos at month end |
|---|---|
| 2025-10 | 1 |
| 2025-12 | 1 |
| 2026-03 | 3 |
| 2026-04 | 3 |
| 2026-05 | 4 |
| 2026-06 | 22 |
| 2026-07 | 21 |
| 2026-09 | 22 |

## Goes with

Tools found in the same repos, ranked by lift: 3× means the two show up together three times as often as chance would give. Only pairs sharing 5 or more repos.

| Tool | Kind | Repos with both | Lift |
|---|---|---|---|
| [hunt](https://favz.co/tools/skill-hunt.md) | Skill | 16 | 1168.3× |
| [ui-ux](https://favz.co/tools/skill-ui-ux.md) | Skill | 16 | 1070.9× |
| [clean-architecture](https://favz.co/tools/skill-clean-architecture.md) | Skill | 16 | 856.7× |
| [council](https://favz.co/tools/skill-council.md) | Skill | 17 | 606.8× |
| [error-handling](https://favz.co/tools/skill-error-handling.md) | Skill | 16 | 476.0× |
| [@notionhq/notion-mcp-server](https://favz.co/tools/mcp-npm-notionhq-notion-mcp-server.md) | MCP server (npm package) | 16 | 329.5× |
| [verification-loop](https://favz.co/tools/skill-verification-loop.md) | Skill | 16 | 325.3× |
| [check](https://favz.co/tools/skill-check.md) | Skill | 16 | 317.3× |
| [accessibility](https://favz.co/tools/skill-accessibility.md) | Skill | 16 | 306.0× |
| [spec](https://favz.co/tools/skill-spec.md) | Skill | 16 | 257.0× |
| [api-design](https://favz.co/tools/skill-api-design.md) | Skill | 16 | 221.6× |
| [plan](https://favz.co/tools/skill-plan.md) | Skill | 16 | 163.7× |