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/jahands/prompts/cursor-rulesgit clone --depth 1 https://github.com/jahands/promptsWhat 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 | $0.00013 | $0.02508 |
| Opus 5 | $0.00006 | $0.01254 |
| Sonnet 5 | $0.00003 | $0.00502 |
| Haiku 4.5 | $0.00001 | $0.00251 |
Grade A, and why
cursor-rules 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.
How it starts
The opening of the file, as written. The whole thing — 457 lines — stays where its author put it; the contents beside it link to each section on GitHub.
START WITH THE SIMPLEST STRUCTURE THAT CLEARLY CONVEYS YOUR RULE
Remember: Empty sections add tokens but no value. Less structure often communicates more clearly.
That's it. Don't add sections unless they add real value.
<rule-name>
<title>Rule Title</title>
<rules>
- First requirement
- Second requirement
- Third requirement
</rules>
<examples>
<example type="good">
```typescript
// Good code example
For most rules, you're done. Only add more sections if the rule is genuinely complex.
<rule-name>
<title>Rule Title</title>
<context>
<applies-to>Where this rule applies</applies-to>
</context>
<overview>High-level explanation</overview>
<key-concepts>
- Important concept
- Another concept
</key-concepts>
<rules>
<rule>
<name>Rule name</name>
<requirements>
- Requirement
- Another requirement
</requirements>
</rule>
</rules>
<examples>
<example type="good">
```typescript
// Code
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 · 457 lines · 13 tokens per session scan A 254a9ff9d86d
cursor-rules is a cursor rule published in the GitHub repository jahands/prompts (19 stars, last pushed 7mo ago), licensed MIT. It adds 13 tokens to every session and 2,508 once invoked, about $0.0001 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.
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