Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/dingyanglyu/matclaw/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.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 | $0.00875 | $0.00875 |
| Opus 5 | $0.00438 | $0.00438 |
| Sonnet 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 4d 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.
- 4d 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 (89 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 875 tokens to every session, about $0.0044 per session on Opus 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
co-mathematician CLAUDE.md
Instructions for VeryMath/co-mathematician, covering claude.md, repository contract, required flow, claude code operating notes and harness commands.
SutroYaro GEMINI.md
Instructions for cybertronai/SutroYaro, covering gemini.md - sutro group research workspace, project context, read these first, core concepts and current best methods.
braina GEMINI.md
Instructions for brainets/braina, covering project: braina (brain interaction analysis), 1. project context & purpose, 2. commands, verify environment (all core dependencies) and run the verification test suite for frites + hoi.
cdxml-toolkit-community AGENTS.md
AGENTS.md instructions for ZiChenWang114514/cdxml-toolkit-community, a project described as: Community CDXML toolkit and MCP server.
research-automation CLAUDE.md
Instructions for lucafusarbassini/research-automation, covering ricet - research automation framework, project overview, claude-flow mcp, workflow habits and file organization.
shannon-prover CLAUDE.md
Claude Code instructions for SkyShannonProver/shannon-prover, covering shannon prover: claude entry point, current boundary, easycrypt environment, eval safety and current documentation.