Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/xc404/kiwi/api-frontend-integrationgit clone --depth 1 https://github.com/xc404/kiwiWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00487 | $0.00487 |
| Opus 5 | $0.00244 | $0.00244 |
| Sonnet 5 | $0.00097 | $0.00097 |
| Haiku 4.5 | $0.00049 | $0.00049 |
Grade A, and why
api-frontend-integration scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
前后端对接与前端异步规范（kiwi）
1. 集合类接口与 CollectionResult
- 后端若直接返回
Collection或 数组，会经ResponseAdvice等逻辑包装为CollectionResult（字段content承载实际集合），再包在统一响应（如R）里。 - 前端对接时：不要假设 HTTP 体是「裸数组」；应从统一成功载荷中读取
content（或项目约定的等价路径），再映射为列表/表格数据。 - 列表接口若日后扩展分页，
CollectionResult也便于扩展字段；对接时以类型定义或服务层封装为准。
2. 异常与 ExceptionHandler
- 业务与框架异常由
ExceptionHandler（@ControllerAdvice）拦截，统一返回R.fail(...)（含业务码、消息等），而不是把 Java 异常栈直接暴露给浏览器。 - 前端错误处理应基于统一响应结构（成功/失败、
code、msg、data等）判断，并在 HTTP 拦截器或服务层集中处理登录失效、无权限等分支；不要只依赖catch原始 Error 文本当作后端语义。
3. 前端异步：优先 Observable
- 在 Angular 前端（
kiwi-admin/frontend）中，异步数据流优先使用 RxJSObservable（如HttpClient返回的流、switchMap/pipe组合），与现有服务层风格一致。 - 仅在边界处（如必须对接仅支持 Promise 的 API）再使用
lastValueFrom/firstValueFrom等转换；避免在业务层大面积混用async/await与 Observable 导致订阅与取消逻辑不一致。
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 23 lines · 487 tokens per session scan A 536b81455733
api-frontend-integration is a cursor rule published in the GitHub repository xc404/kiwi (7 stars, last pushed 7d ago), licensed MIT. It adds 487 tokens to every session, about $0.0024 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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