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/srobinson/fmm/claude-mdgit clone --depth 1 https://github.com/srobinson/fmmWrote 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/srobinson/fmm/claude-md)<a href="https://agentmods.dev/instructions/srobinson/fmm/claude-md"><img src="https://agentmods.dev/badge/instructions/srobinson/fmm/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 | $0.00131 | $0.00131 |
| Opus 5 | $0.00066 | $0.00066 |
| Sonnet 5 | $0.00026 | $0.00026 |
| Haiku 4.5 | $0.00013 | $0.00013 |
Grade A, and why
fmm 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.
What it actually says
fmm (frontmatter-matters)
Code structural intelligence for AI agents. Rust workspace with fmm-core (library) and fmm (CLI).
Commands
Use just for all workflows. Run just to see available recipes.
just test # nextest + doctests (NOT cargo test)
just check # fmt + clippy
just ci # check + test + build
Do not run cargo test. The config tests mutate environment variables and require process-per-test isolation that only nextest provides. cargo test will produce spurious failures.
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 · 16 lines · 131 tokens per session scan A a813ca0793eb
fmm CLAUDE.md is an instructions file published in the GitHub repository srobinson/fmm (2 stars, last pushed 2mo ago), licensed MIT. It adds 131 tokens to every session, about $0.0007 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
Engram AGENTS.md
Instructions for bobaba76/Engram, covering coder mcp - primary code intelligence, always do, never do and preferred usage.
codesynapse CLAUDE.md
Instructions for sohilladhani/codesynapse, covering codesynapse — code intelligence, displaying codesynapsestats and codesynapse — code intelligence.
codegraph CLAUDE.md
Instructions for Lordymine/codegraph, covering claude.md — codegraph, o que é, princípios de design (não violar sem motivo), estado atual — m0–m5 fechados and build & uso.
Chisel CLAUDE.md
Claude Code instructions for IronAdamant/Chisel, covering chisel — claude.md, audience (how to read this project), architecture, key design decisions and dev commands.
slimdex-mcp copilot-instructions.md
Copilot instructions for Siddhukaushik/slimdex-mcp, covering slimdex copilot instructions, find and read, write, memory and cost.
ummon CLAUDE.md
Instructions for Nayshins/ummon, covering ummon development guide, build & test commands, build the project, run the project and run with specific command.