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/netresearch/matrix-skill/agents-mdgit clone --depth 1 https://github.com/netresearch/matrix-skillWhat 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 | $0.02738 | $0.02738 |
| Opus 5 | $0.01369 | $0.01369 |
| Sonnet 5 | $0.00548 | $0.00548 |
| Haiku 4.5 | $0.00274 | $0.00274 |
Grade A, and why
matrix-skill AGENTS.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 2d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 2d ago First seen · 147 lines · 2,738 tokens per session scan A 17bf5924f9f9
matrix-skill AGENTS.md is an instructions file published in the GitHub repository netresearch/matrix-skill (5 stars, last pushed 2d ago), with no licence file. It adds 2,738 tokens to every session, about $0.0137 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 2026-08-31.
Other instructions, from other repositories
image_gen CLAUDE.md
Instructions for SpillwaveSolutions/image_gen, covering claude.md, what this is, commands, backend auto and models.
image_gen AGENTS.md
Instructions for SpillwaveSolutions/image_gen, covering image-gen and wikiticket sdd (worklog).
document-specialist-skill AGENTS.md
AGENTS.md instructions for SpillwaveSolutions/document-specialist-skill: When the user asks for a design document, SDD, architecture document, or DESIGNDOC.md, load SKILL.md then references/workflows/design-workflow.md.
document-specialist-skill CLAUDE.md
Claude Code instructions for SpillwaveSolutions/document-specialist-skill: See AGENTS.md and SKILL.md. Intent DESIGN writes DESIGNDOC.md from references/templates/markdown/DESIGNDOC.md.
AionUi AGENTS.md
AGENTS.md instructions for iOfficeAI/AionUi, covering aionui - project guide, code conventions, file & directory structure, naming and ui library & icons.
claude-ads CLAUDE.md
Instructions for AgriciDaniel/claude-ads, covering claude ads repository instructions, architecture, development and verification.