diagnose-with-memory

A bug-diagnosis workflow that uses records of earlier failures, decisions, and lessons. It checks whether past findings still apply to the current version and environment before investigating the code.

In plain words
What is it for?
Summarizing a symptom, recalling related memory, finding the cause, applying the smallest fix, running focused tests, and recording the new failure or lesson for later use.
Why use it?
It reduces repeated mistakes and discourages workarounds made before the actual cause is known.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/ezbuilder/code-brain/diagnose-with-memory
Any agent
npx skills add ezBuilder/code-brain --skill diagnose-with-memory
Clone the repo
git clone --depth 1 https://github.com/ezBuilder/code-brain

Made for: Claude Code, Codex.

Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 382 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What 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.

ModelPer sessionOnce invoked
Fable 5 $0.00032 $0.00382
Opus 5 $0.00016 $0.00191
Sonnet 5 $0.00006 $0.00076
Haiku 4.5 $0.00003 $0.00038

Measured 2d ago against content hash 76e334d4dca8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

diagnose-with-memory 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.

kits/global-agent-kit/.claude/skills/diagnose-with-memory/SKILL.md · 27 lines

What it actually says

기억을 활용한 진단 절차:

  1. 증상을 한 문장으로 정리한다.
  2. 먼저 과거 경험을 회상한다:
    • .ai/bin/ai memory recall --query "<증상 핵심어>" (결정·실패·교훈·절차 통합)
    • 또는 .ai/bin/ai lessons recall --query "<증상 핵심어>" (교훈만)
  3. 회상된 실패가 현재 버전/환경에서도 유효한지 확인한다(날짜·버전 관측이지 영구 금지가 아님).
  4. 관련 파일과 기존 패턴을 찾는다.
  5. 원인을 확인한 뒤 가장 작은 수정만 적용한다.
  6. 좁은 테스트부터 실행해 검증한다.
  7. 새로 배운 것을 기억에 남긴다:
    • 재현 가능한 실패: .ai/bin/ai memory decision add --kind failure --text "<무엇이 실패>" --observed-version <pkg>=<버전> --retest-after <YYYY-MM-DD>
    • 일반화된 교훈: .ai/bin/ai lessons add --failure "<현상>" --cause "<원인>" --fix "<해결>"
  8. 완료 보고에 변경/검증/위험을 적는다.

금지:

  • 회상 없이 같은 실패를 반복 진단
  • 원인 모른 채 우회 코드 작성
  • 영구 금지로 기록(항상 버전·날짜 관측으로)
Changes

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.

  1. 2d ago First seen · 27 lines · 32 tokens per session scan A 76e334d4dca8

Subscribe to this mod's changes

diagnose-with-memory is a skill published in the GitHub repository ezBuilder/code-brain (11 stars, last pushed 2d ago), licensed Apache-2.0. It adds 32 tokens to every session and 382 once invoked, about $0.0002 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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