# api-contract

Skill · `skill:api-contract`

Favz census, built 2026-10-04. Tool names and counts only. No repo names. HTML page: https://favz.co/tools/skill-api-contract.html

- Repos that have it now: 29
- Repos that ever had it: 29
- Still have it: 100%
- Share of census repos with any tool: 0.03%

## 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 |
|---|---|
| 2026-01 | 1 |
| 2026-03 | 3 |
| 2026-04 | 4 |
| 2026-06 | 8 |
| 2026-07 | 18 |
| 2026-08 | 21 |
| 2026-09 | 29 |

## 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 |
|---|---|---|---|
| [frontend](https://favz.co/tools/skill-frontend.md) | Skill | 5 | 132.6× |
| [webapp-testing](https://favz.co/tools/skill-webapp-testing.md) | Skill | 5 | 41.6× |
| [testing](https://favz.co/tools/skill-testing.md) | Skill | 5 | 36.2× |
| [brainstorming](https://favz.co/tools/skill-brainstorming.md) | Skill | 5 | 25.9× |