Borrowing it
Nothing to install: this file belongs to favcrm/mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/favcrm/mcp/main/.cursorrulesgit clone --depth 1 https://github.com/favcrm/mcpWrote 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/rules/favcrm/mcp/cursorrules)<a href="https://agentmods.dev/rules/favcrm/mcp/cursorrules"><img src="https://agentmods.dev/badge/rules/favcrm/mcp/cursorrules/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/rules/favcrm/mcp/cursorrules"><img src="https://agentmods.dev/badge/rules/favcrm/mcp/cursorrules.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00090 | $0.00090 |
| Opus 5.5 | $0.00036 | $0.00036 |
| Sonnet 5.5 | $0.00018 | $0.00018 |
| Haiku 4.5 | $0.00009 | $0.00009 |
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 1mo 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
When building with FavCRM:
- Do not guess API endpoints. Use the FavCRM MCP server and run
list_toolsto discover the 150+ available tools. - For specific domain logic (billing, bookings, auth), run
npx skills add favcrm/mcpto download our official AI operating procedures. - Always preview data and request user confirmation before destructive actions (refunds, cancellations, bulk emails/SMS).
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.
- 1mo ago First seen · 5 lines · 90 tokens per session scan A 069b1f9ef652
cursorrules is a cursor rule published in the GitHub repository favcrm/mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 90 tokens to every session, about $0.0004 per session on Opus 5.5. 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 cursor rules, from other repositories
cursor-memory
Shokunin memory system: persistent context across sessions.
about-codebase
General information about the Lineai MCP Server codebase and its purpose.
secure-dev-rust
These rules apply to all Rust code in the repository and aim to prevent common security risks through disciplined use of memory safety, input validation, error handling, and safe APIs.
tensorflow
TensorFlow: Keras, model training, production deployment.
php-client-implementation
Guidelines for implementing MCP clients in PHP.
clean-code
Clean code principles for maintainable, readable, and well-structured code.