# constraint-driven-development

Skill · `skill:constraint-driven-development`

Favz census, built 2026-10-08. Tool names and counts only. No repo names. HTML page: https://favz.co/tools/skill-constraint-driven-development.html

- Repos that have it now: 22
- Repos that ever had it: 23
- Still have it: 96%
- Share of census repos with any tool: 0.02%

## 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 |
|---|---|
| 2026-09 | 21 |
| 2026-10 | 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 |
|---|---|---|---|
| [observability-and-instrumentation](https://favz.co/tools/skill-observability-and-instrumentation.md) | Skill | 20 | 1882.3× |
| [doubt-driven-development](https://favz.co/tools/skill-doubt-driven-development.md) | Skill | 22 | 1782.9× |
| [using-agent-skills](https://favz.co/tools/skill-using-agent-skills.md) | Skill | 20 | 1477.2× |
| [idea-refine](https://favz.co/tools/skill-idea-refine.md) | Skill | 20 | 1372.9× |
| [shipping-and-launch](https://favz.co/tools/skill-shipping-and-launch.md) | Skill | 18 | 1364.0× |
| [ci-cd-and-automation](https://favz.co/tools/skill-ci-cd-and-automation.md) | Skill | 19 | 1319.8× |
| [deprecation-and-migration](https://favz.co/tools/skill-deprecation-and-migration.md) | Skill | 19 | 1304.3× |
| [source-driven-development](https://favz.co/tools/skill-source-driven-development.md) | Skill | 21 | 1303.6× |
| [git-workflow-and-versioning](https://favz.co/tools/skill-git-workflow-and-versioning.md) | Skill | 19 | 1289.1× |
| [interview-me](https://favz.co/tools/skill-interview-me.md) | Skill | 20 | 1268.5× |
| [browser-testing-with-devtools](https://favz.co/tools/skill-browser-testing-with-devtools.md) | Skill | 19 | 1259.8× |
| [documentation-and-adrs](https://favz.co/tools/skill-documentation-and-adrs.md) | Skill | 19 | 1205.1× |