Borrowing it
Nothing to install: this file belongs to zhangfengcdt/memoir. 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/zhangfengcdt/memoir/main/CLAUDE.mdgit clone --depth 1 https://github.com/zhangfengcdt/memoirWrote 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/zhangfengcdt/memoir/claude-md)<a href="https://agentmods.dev/instructions/zhangfengcdt/memoir/claude-md"><img src="https://agentmods.dev/badge/instructions/zhangfengcdt/memoir/claude-md.svg" alt="Measured on agentmods" 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 | $0.01839 | $0.01839 |
| Opus 5 | $0.00920 | $0.00920 |
| Sonnet 5 | $0.00368 | $0.00368 |
| Haiku 4.5 | $0.00184 | $0.00184 |
Grade C, and why
memoir CLAUDE.md scanned grade C with 1 finding 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 8d 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
- **Plugin works in non-git folders.** Single `main` memoir branch only; the Stop hook captures to `main`. `/memoir:onboard` switches to `project:onboard` (file-shape index built by deterministic stdlib extractors under How it starts
The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Guidance for Claude Code working in this repository. Keep it terse — the full reference lives at https://zhangfengcdt.github.io/memoir/.
Project
Memoir is Git-like version control for AI memory, aimed at coding agents. A store is a Prolly-tree with semantic paths (workflow.coding.style, preferences.tools.memory), branch/commit/merge, and cryptographic proofs. Primary consumers: the memoir CLI, the MCP server, and the Claude Code plugin under plugins/claude-code/.
Development
Use the venv for everything:
source venv/bin/activate # or `python -m venv venv && source venv/bin/activate`
make install-dev # first time only
Before any commit, in order:
make format # black + isort + ruff --fix
make lint # must pass
make test # must pass
make ci runs the full pipeline (lint, test, security, docs). Use it before opening a PR.
Test a single file or case:
pytest tests/test_cli.py -v
pytest tests/ -k "test_function_name"
Critical rules
- Never commit or push without explicit user permission. This includes auto-mode. Ask.
- Never create test data directories inside the project. Use
/tmp/for anything transient. - Never
print()for debugging. Uselogging, or write to/tmp/. - Don't skip
make lint/make test— CI will block the PR anyway, fix it locally. - Don't bypass the taxonomy. All memories go through semantic paths, never raw UUIDs.
type-checkis non-blocking (237 pre-existing mypy errors, tracked as tech debt) — do not add new ones, but don't gate work on them.
Architecture at a glance
src/memoir/store/— ProllyTree store, LangGraphBaseStoreadapter, git-like versioning.src/memoir/taxonomy/— fixed (SemanticTaxonomy) and iterative (LLMIterativeTaxonomy) path systems, ~200 paths, 3 levels.src/memoir/classifier/—IntelligentClassifier(LLM + prompt caching) andSemanticClassifier(pattern, 1–5ms).src/memoir/search/— single-stageIntelligentSearchEngine, taxonomy cached into the system prompt.src/memoir/core/—ProllyTreeMemoryStoreManager(drop-in LangMem replacement),ProfileMemento,TimelineMemento.src/memoir/services/—StoreService,MemoryService,BranchService,CryptoService(reusable business logic).src/memoir/cli/— Click CLI (memoirentry point). Supports--jsonand the agent env varsMEMOIR_STORE,MEMOIR_JSON.src/memoir/ui/— web UI (Python HTTP server + React/Vite SPA). Handlers underui/handlers/, frontend source underui/webapp/src/, built bundle atui/webapp/dist/.plugins/claude-code/— Claude Code plugin: slash commands, skills, hooks.tests/— unit + integration + versioning + CLI tests. Run withpytest.
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.
- 8d ago First seen · 108 lines · 1,839 tokens per session scan C 4c3de399f3bf
memoir CLAUDE.md is an instructions file published in the GitHub repository zhangfengcdt/memoir (610 stars, last pushed 4d ago), licensed Apache-2.0. It adds 1,839 tokens to every session, about $0.0092 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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