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 skills/ezbuilder/code-brain/implement-featurenpx skills add ezBuilder/code-brain --skill implement-featuregit clone --depth 1 https://github.com/ezBuilder/code-brainWhat 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 | $0.00015 | $0.00241 |
| Opus 5 | $0.00008 | $0.00120 |
| Sonnet 5 | $0.00003 | $0.00048 |
| Haiku 4.5 | $0.00002 | $0.00024 |
Grade A, and why
implement-feature 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 yesterday.
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
기능 구현 절차:
- 요구사항을 검증 가능한 목표로 바꾼다.
- 기존 구현과 유사 패턴을 조사한다.
- public API, schema, UX 변경 여부를 확인한다.
- Code Brain이 설치된 프로젝트인지 확인하고, 있으면 검색/검증 경로에 활용한다.
- 무코드, 표준/플랫폼 기능, 이미 설치된 의존성, 한 줄 구현 순서로 먼저 줄인다.
- 필요한 테스트만 추가/수정한다.
- 좁은 검증부터 실행한다.
- 알려진 한계를 남기는 단순화는
cb-simplify: <ceiling>; revisit when <trigger>로 표시한다. - 기존 동작 변경이 있으면 완료 보고에 명시한다.
금지:
- 요청 없는 옵션/설정/확장성 추가
- 새 dependency 추가
- 단일 구현 abstraction/factory/wrapper 생성
- 요청 없는 boilerplate/scaffold 추가
- 무관한 코드 개선
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.
- yesterday First seen · 24 lines · 15 tokens per session scan A 213292606d52
implement-feature is a skill published in the GitHub repository ezBuilder/code-brain (11 stars, last pushed 2d ago), licensed Apache-2.0. It adds 15 tokens to every session and 241 once invoked, about $0.0001 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 2026-08-30.
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