Borrowing it
Nothing to install: this file belongs to LH8PPL/core-memory-kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/LH8PPL/core-memory-kit/main/CLAUDE.mdgit clone --depth 1 https://github.com/LH8PPL/core-memory-kitWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/lh8ppl/core-memory-kit/claude-md)<a href="https://agentmods.dev/instructions/lh8ppl/core-memory-kit/claude-md"><img src="https://agentmods.dev/badge/instructions/lh8ppl/core-memory-kit/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/lh8ppl/core-memory-kit/claude-md"><img src="https://agentmods.dev/badge/instructions/lh8ppl/core-memory-kit/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.26397 | $0.26397 |
| Opus 5.5 | $0.10559 | $0.10559 |
| Sonnet 5.5 | $0.05279 | $0.05279 |
| Haiku 4.5 | $0.02640 | $0.02640 |
Grade D, and why
core-memory-kit CLAUDE.md scanned grade D with 2 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 1mo 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
| [`scripts/validate-docs.mjs`](scripts/validate-docs.mjs) — **the ONE doc validator** (Task 186 / D-249 structural graduation; consolidates the four former `validate-references` / `-doc-registry` / `-doc-completeness` / Unrestricted tool accessmediumExcessive agency
A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.
- **When an agent/tool "calls a tool but nothing happens", check the agent's CAPABILITY/ENABLEMENT config FIRST — before blaming the platform (binding).** 2026-06-24, the kiro-cli explicit-memory cut-blocker: the model " How it starts
The opening of the file, as written. The whole thing — 463 lines — stays where its author put it; the contents beside it link to each section on GitHub.
core-memory-kit — project CLAUDE.md
Auto-loaded by Claude Code at session start when this repo is the primary workspace. Read in full before responding to the user.
What this project is
A per-project, in-repo memory system for Claude Code. Fixes per-session amnesia by storing durable facts as markdown inside <repo>/context/ (committed) + <repo>/context.local/ (gitignored) + ~/.core-memory-kit/ (user-tier). Architecture-first v0.1 (~50 dev-days, 36 tasks). Not Cursor's MVP shape — we're laying foundations first.
Read these in order (10 minutes total)
docs/journey/build-log.md— full narrative. The single most important doc.docs/SYSTEM-MAP.md— the kit as ONE system: whole + parts + the relationship edges, the TARGET learn-loop design ("our Figure 2", §6), and the anti-decomposition guard (§7). Read before any architecture-level thinking or decision — it holds what the structural docs decompose away.specs/tasks.md— the 44-task build plan. Find the next[ ]parent task.specs/glossary.md— domain terms. When two docs disagree, glossary wins.specs/design.md— HOW the kit works (skim, then read sections as needed).specs/requirements.md— WHAT v0.1.0 must do (FR-, NFR-).
Working style (locked in by the user)
The user is direct and tight on time. Match the energy.
Tone:
- Terse, direct responses. No filler ("Great question!", "Sure thing!", "I'd love to help!").
- Lead with the answer. Add context only if it changes the answer.
- "go" = start the next task immediately, no preamble.
- "lets continue" / "let's continue with X" = same — execute.
- Acknowledge mistakes plainly. Don't bury them in apology. "I was wrong about X. Here's the fix."
Decisions:
- One recommendation > four options. State a choice; user redirects if wrong.
- Use
AskUserQuestiononly for genuine forks where you can't pick. Don't over-use it for things you should just decide. - When asked for opinions, give a real opinion. Don't equivocate.
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.
- 1mo ago First seen · 463 lines · 26,397 tokens per session scan D a211a02dff9b
core-memory-kit CLAUDE.md is an instructions file published in the GitHub repository LH8PPL/core-memory-kit (7 stars, last pushed 21d ago), licensed MIT. It adds 26,397 tokens to every session, about $0.1056 per session on Opus 5.5. A static security scan graded it D with 2 findings (hidden instructions, unrestricted tool access). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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