# sdd-spec

Skill · `skill:sdd-spec`

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

- Repos that have it now: 33
- Repos that ever had it: 36
- Still have it: 92%
- 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 |
|---|---|
| 2026-02 | 2 |
| 2026-03 | 5 |
| 2026-04 | 9 |
| 2026-05 | 13 |
| 2026-06 | 18 |
| 2026-07 | 23 |
| 2026-08 | 25 |
| 2026-09 | 33 |

## 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 |
|---|---|---|---|
| [sdd-init](https://favz.co/tools/skill-sdd-init.md) | Skill | 19 | 2368.7× |
| [sdd-verify](https://favz.co/tools/skill-sdd-verify.md) | Skill | 21 | 2315.9× |
| [sdd-tasks](https://favz.co/tools/skill-sdd-tasks.md) | Skill | 22 | 2252.9× |
| [sdd-design](https://favz.co/tools/skill-sdd-design.md) | Skill | 23 | 2127.4× |
| [issue-creation](https://favz.co/tools/skill-issue-creation.md) | Skill | 12 | 1720.4× |
| [go-testing](https://favz.co/tools/skill-go-testing.md) | Skill | 13 | 1491.0× |
| [skill-improver](https://favz.co/tools/skill-skill-improver.md) | Skill | 9 | 860.2× |
| [skill-creator](https://favz.co/tools/skill-skill-creator.md) | Skill | 16 | 41.4× |

## Comes in the same pack

4 tools almost never appear without this one. Most likely people copy them in together.

- [sdd-apply](https://favz.co/tools/skill-sdd-apply.md)
- [sdd-archive](https://favz.co/tools/skill-sdd-archive.md)
- [sdd-explore](https://favz.co/tools/skill-sdd-explore.md)
- [sdd-propose](https://favz.co/tools/skill-sdd-propose.md)