Borrowing it
Nothing to install: this file belongs to rand/mnemosyne. 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/rand/mnemosyne/main/CLAUDE.mdgit clone --depth 1 https://github.com/rand/mnemosyneWrote 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/rand/mnemosyne/claude-md)<a href="https://agentmods.dev/instructions/rand/mnemosyne/claude-md"><img src="https://agentmods.dev/badge/instructions/rand/mnemosyne/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/rand/mnemosyne/claude-md"><img src="https://agentmods.dev/badge/instructions/rand/mnemosyne/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 | $0.08021 | $0.08021 |
| Opus 5.5 | $0.03208 | $0.03208 |
| Sonnet 5.5 | $0.01604 | $0.01604 |
| Haiku 4.5 | $0.00802 | $0.00802 |
Grade C, and why
mnemosyne CLAUDE.md scanned grade C 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -fsSL https://raw.githubusercontent.com/steveyegge/beads/main/scripts/install.sh | bash Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://raw.githubusercontent.com/steveyegge/beads/main/scripts/install.sh | bash How it starts
The opening of the file, as written. The whole thing — 1,103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Development Guidelines
Core Principle: These guidelines establish workflows, decision trees, and checkpoints that protect against wasted time and technical debt. The Work Plan Protocol takes priority for all development work.
Multi-Agent Architecture: A sophisticated multi-agent system operates continuously in Claude Code to orchestrate work, optimize context, validate quality, and execute tasks in parallel.
⚡ AUTOMATIC MEMORY ENFORCEMENT: Mnemosyne usage is technically enforced via hooks. You cannot bypass this system:
- SessionStart: Auto-loads memories at every session start
- PostToolUse: Tracks "memory debt" after Edit/Write/Commit
- PreToolUse: BLOCKS git push and PR creation if debt > 0
- Stop: Validates memory usage before finishing responses
Memory debt system: Every Edit, Write, or Commit increments debt. After 3 events, you'll be prompted.
git pushis blocked until memories are stored. This is not optional.
Table of Contents
- Multi-Agent Orchestration System
- Work Plan Protocol START HERE
- Agentic Workflow (Beads)
- Critical Thinking & Pushback
- Language Stack & Tooling
- Testing & Validation
- Version Control & Git
- Experience Design + Development
- Skills System
- Anti-Patterns
- Quick Reference
1. Multi-Agent Orchestration System
Four primary agents operate continuously in every Claude Code session:
Agent 1: Orchestrator
Role: Central coordinator and state manager
Responsibilities:
- Coordinate handoffs between agents with zero-copy data passing
- Monitor execution state across parallel workstreams
- Prevent race conditions and deadlocks through dependency-aware scheduling
- Preserve context before compaction (75% threshold →
.claude/context-snapshots/) - Maintain global work graph and schedule parallel work
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 · 1,103 lines · 8,021 tokens per session scan C f65d95932c1b
mnemosyne CLAUDE.md is an instructions file published in the GitHub repository rand/mnemosyne (101 stars, last pushed 11mo ago), licensed MIT. It adds 8,021 tokens to every session, about $0.0321 per session on Opus 5.5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.