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 rules/kksudo/agentfs/cursorrulesgit clone --depth 1 https://github.com/kksudo/AgentFSWhat 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 | $0.00142 | $0.00142 |
| Opus 5 | $0.00071 | $0.00071 |
| Sonnet 5 | $0.00028 | $0.00028 |
| Haiku 4.5 | $0.00014 | $0.00014 |
Grade A, and why
cursorrules 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 yesterday.
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
AgentFS — Cursor Agent Instructions
Read AGENTS.md in this repository root for full project context, architecture rules, and development guidelines.
Quick Reference
- TypeScript strict mode, ESM (
"type": "module",.jsextensions in imports) - Node.js >= 18.0.0
npm run buildto compile,npm testto run 261+ Jest tests- Architecture source of truth:
docs/architecture.md - Everything is a file. No databases, no APIs, no cloud dependencies.
- Compile, don't symlink. Idempotent operations only.
- Follow existing formats from architecture doc exactly. Don't invent new conventions.
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.
- yesterday First seen · 14 lines · 142 tokens per session scan A c1a15cd9a2e9
cursorrules is a cursor rule published in the GitHub repository kksudo/AgentFS (2 stars, last pushed 4mo ago), licensed MIT. It adds 142 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.
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