Borrowing it
Nothing to install: this file belongs to DingyangLyu/MatClaw. 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/DingyangLyu/MatClaw/main/CLAUDE.mdgit clone --depth 1 https://github.com/DingyangLyu/MatClawWrote 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/dingyanglyu/matclaw/claude-md)<a href="https://agentmods.dev/instructions/dingyanglyu/matclaw/claude-md"><img src="https://agentmods.dev/badge/instructions/dingyanglyu/matclaw/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/dingyanglyu/matclaw/claude-md"><img src="https://agentmods.dev/badge/instructions/dingyanglyu/matclaw/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 | $0.00875 | $0.00875 |
| Opus 5.5 | $0.00350 | $0.00350 |
| Sonnet 5.5 | $0.00175 | $0.00175 |
| Haiku 4.5 | $0.00088 | $0.00088 |
Grade A, and why
MatClaw 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 — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MatClaw
Git Branch & Push Strategy
- Local
matclaw-release→ stable, pushes tomainon all remotes - Local
dev→ experimental, pushes todevon github (DingyangLyu/MatClaw) - New features and large changes go on
devfirst, merge tomatclaw-releaseafter testing - Push commands:
- Stable:
git push github matclaw-release:main(+ gitee, zgca, bjzgcai) - Dev:
git push github dev
- Stable:
- NEVER add Co-Authored-By to commits
About
Materials science AI assistant powered by Claude Agent SDK, with integrated computational materials science tools (Quantum ESPRESSO, LAMMPS, RASPA3, MACE, pymatgen, ASE, etc.).
Quick Context
Single Node.js process with skill-based channel system. Channels (WhatsApp, Telegram, Slack, Discord, Gmail) are skills that self-register at startup. Messages route to Claude Agent SDK running in containers (Linux VMs). Each group has isolated filesystem and memory. Containers include a full materials computation environment with DFT, MD, MC tools and Miniconda for flexible package management.
Key Files
| File | Purpose |
|---|---|
src/index.ts |
Orchestrator: state, message loop, agent invocation |
src/channels/registry.ts |
Channel registry (self-registration at startup) |
src/ipc.ts |
IPC watcher and task processing |
src/router.ts |
Message formatting and outbound routing |
src/config.ts |
Trigger pattern, paths, intervals |
src/container-runner.ts |
Spawns agent containers with mounts |
src/task-scheduler.ts |
Runs scheduled tasks |
src/db.ts |
SQLite operations |
groups/{name}/CLAUDE.md |
Per-group memory (isolated) |
container/skills/agent-browser/ |
Browser automation tool (available to all agents via Bash) |
container/skills/materials-compute/ |
Materials computation guide (QE, LAMMPS, RASPA3, MACE, pymatgen, ASE) |
Skills
| Skill | When to Use |
|---|---|
/setup |
First-time installation, authentication, service configuration |
/customize |
Adding channels, integrations, changing behavior |
/debug |
Container issues, logs, troubleshooting |
/update-matclaw |
Bring upstream MatClaw updates into a customized install |
/qodo-pr-resolver |
Fetch and fix Qodo PR review issues interactively or in batch |
/get-qodo-rules |
Load org- and repo-level coding rules from Qodo before code tasks |
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 · 78 lines · 875 tokens per session scan A f5e89be5a5fe
MatClaw CLAUDE.md is an instructions file published in the GitHub repository DingyangLyu/MatClaw (98 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 875 tokens to every session, about $0.0035 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
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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).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.