# challenge

Skill · `skill:challenge`

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

- Repos that have it now: 30
- Repos that ever had it: 35
- Still have it: 86%
- 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 |
| 2026-02 | 3 |
| 2026-03 | 4 |
| 2026-04 | 8 |
| 2026-05 | 11 |
| 2026-06 | 17 |
| 2026-07 | 26 |
| 2026-08 | 27 |
| 2026-09 | 30 |

## 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 |
|---|---|---|---|
| [think](https://favz.co/tools/skill-think.md) | Skill | 9 | 1091.8× |
| [cicd](https://favz.co/tools/skill-cicd.md) | Skill | 8 | 970.5× |
| [scope](https://favz.co/tools/skill-scope.md) | Skill | 9 | 946.2× |
| [remember](https://favz.co/tools/skill-remember.md) | Skill | 12 | 610.5× |
| [recall](https://favz.co/tools/skill-recall.md) | Skill | 10 | 485.2× |
| [decide](https://favz.co/tools/skill-decide.md) | Skill | 5 | 350.5× |
| [version-bump](https://favz.co/tools/skill-version-bump.md) | Skill | 9 | 342.0× |
| [run-tests](https://favz.co/tools/skill-run-tests.md) | Skill | 8 | 119.0× |
| [review](https://favz.co/tools/skill-review.md) | Skill | 8 | 30.1× |