# product-brief

Skill · `skill:product-brief`

Favz census, built 2026-10-25. Tool names and counts only. No repo names. HTML page: https://favz.co/tools/skill-product-brief.html

- Repos that have it now: 20
- Repos that ever had it: 21
- Still have it: 95%
- Share of census repos with any tool: 0.01%

## 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](https://favz.co/months/#2026-01) | 1 |
| [2026-02](https://favz.co/months/#2026-02) | 2 |
| [2026-04](https://favz.co/months/#2026-04) | 3 |
| [2026-05](https://favz.co/months/#2026-05) | 4 |
| [2026-06](https://favz.co/months/#2026-06) | 9 |
| [2026-07](https://favz.co/months/#2026-07) | 13 |
| [2026-08](https://favz.co/months/#2026-08) | 15 |
| [2026-09](https://favz.co/months/#2026-09) | 16 |
| [2026-10](https://favz.co/months/#2026-10) | 20 |

Each linked month leads to what else people first added that month. All months: https://favz.co/months/index.md

## 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 |
|---|---|---|---|
| [data](https://favz.co/tools/skill-data.md) | Skill | 9 | 2642.3× |
| [create-architecture](https://favz.co/tools/skill-create-architecture.md) | Skill | 8 | 599.7× |
| [dev-story](https://favz.co/tools/skill-dev-story.md) | Skill | 8 | 575.2× |
| [investigate](https://favz.co/tools/skill-investigate.md) | Skill | 9 | 366.6× |
| [prd](https://favz.co/tools/skill-prd.md) | Skill | 10 | 355.9× |
| [brainstorming](https://favz.co/tools/skill-brainstorming.md) | Skill | 9 | 70.7× |
| [code-review](https://favz.co/tools/skill-code-review.md) | Skill | 10 | 39.5× |