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数据模型和API设计方法论，包含ERD设计、数据字典、RESTful API规范
Passed 20 of 22 test cases with the skill, and 15 of 22 without it.
and 2 more in the full report
5 fixed15 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
When a user attempts to register with an email address that already exists in the database, what HTTP status code and error code string should the API return?
| Checked | Without skill | With skill |
|---|---|---|
| Returns HTTP status 409 Conflict with error code CONFLICT. | Missed | Passed |
The instructions your model reads when the skill loads.
在系统架构确定后，需要设计：
从PRD中识别核心实体（名词）：
示例：
确定实体之间的关系：
| 关系类型 | 说明 | 示例 |
|---|---|---|
| 一对一 (1:1) | 一个A对应一个B | User - Profile |
| 一对多 (1:N) | 一个A对应多个B | User - Post |
| 多对多 (M:N) | 多个A对应多个B | Post - Tag |
关系表示：
||--o{: 一对多||--||: 一对一}o--o{: 多对多使用 Mermaid 绘制 ERD：
test cases passed, vs 15 / 22 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.