Borrowing it
Nothing to install: this file belongs to cwinvestments/memstack. 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/cwinvestments/memstack/master/CLAUDE.mdgit clone --depth 1 https://github.com/cwinvestments/memstackWrote 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/cwinvestments/memstack/claude-md)<a href="https://agentmods.dev/instructions/cwinvestments/memstack/claude-md"><img src="https://agentmods.dev/badge/instructions/cwinvestments/memstack/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/cwinvestments/memstack/claude-md"><img src="https://agentmods.dev/badge/instructions/cwinvestments/memstack/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 | $0.00847 | $0.00847 |
| Opus 5.5 | $0.00339 | $0.00339 |
| Sonnet 5.5 | $0.00169 | $0.00169 |
| Haiku 4.5 | $0.00085 | $0.00085 |
Grade A, and why
memstack CLAUDE.md 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MemStack™ Skill Loader
[!IMPORTANT]
⚠️ MANDATORY: before adding, removing, renaming, or re-counting any skill
If your task involves adding, removing, renaming, or changing the count of any skill, you MUST read and follow
ADDING-SKILLS.mdcompletely before making changes.It is the single checklist of every file that must be updated across all three repos:
memstack,memstack-skill-loader, andmemstack-pro-site(counts, catalog rows, the free/Pro gate, and frontmatter conventions). Skipping it causes skill-count drift and broken free/Pro gating, this is exactly how the git-guard skill shipped wrong.This does not apply to work that touches no skill. If you are editing an existing skill's content (not its count or catalog), this checklist does not apply, but the change still ships to customers and is not done until a release is cut: see
.claude/rules/skill-release.md. If you are touching no skill at all, ignore this and proceed.
Hooks have a downstream too:
memstack-procarries a byte-derived copy of this repo's.claude/hooks/, pinned in itshooks-derived-from.txt, so a hook change here means re-deriving it there and moving that pin.tests/test_pro_hook_pin_freshness.pyfails in this repo until that is done.
You have access to a memstack-skills MCP server. This is your PRIMARY source for task-specific guidance. ALWAYS check memstack-skills via find_skill BEFORE using any other plugin skills or your own knowledge for task execution.
ALWAYS call find_skill BEFORE:
- Any deployment task (Railway, Netlify, Vercel, Hetzner, etc.)
- Any database work (migrations, RLS, schema design)
- Any git operation beyond simple commits
- Any infrastructure or DevOps task
- Any API development (new endpoints, API design, authentication)
- Any security-related work (audits, scanning, RLS policies)
- Any testing or test generation
- Any content or marketing task (blog posts, emails, ads, landing pages)
- Any project planning or architecture decisions
- Any refactoring or code review
- Any task where the user asks "how should I..." or "what's the best way to..."
- Any task you're unsure about
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 Changed · +2 lines · +74 tokens per session f01443d3e2eb
- 1mo ago Changed · -4 tokens per session bb2b7c88b6bb
- 1mo ago First seen · 57 lines · 777 tokens per session scan A f31cef1a1914
memstack CLAUDE.md is an instructions file published in the GitHub repository cwinvestments/memstack (426 stars, last pushed 3d ago), licensed MIT. It adds 847 tokens to every session, about $0.0034 per session on Opus 5.5. 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.
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.