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/jhl-labs/vibe-project/cursorrulesgit clone --depth 1 https://github.com/jhl-labs/vibe-projectWhat 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 | $0.00495 | $0.00495 |
| Opus 5 | $0.00247 | $0.00247 |
| Sonnet 5 | $0.00099 | $0.00099 |
| Haiku 4.5 | $0.00049 | $0.00049 |
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 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 — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cursor AI Rules
⚠️ DEPRECATION NOTICE
─────────────────────────────────────────────────────────────
This .cursorrules file format is DEPRECATED.
Cursor will remove support for this format in a future release.
Please migrate to the new Project Rules system:
📁 .cursor/rules/*.mdc
This template includes both formats for compatibility:
- .cursor/rules/general.mdc (always applied)
- .cursor/rules/typescript.mdc (*.ts, *.tsx, *.js, *.jsx)
- .cursor/rules/python.mdc (*.py)
- .cursor/rules/architecture.mdc (domain, application, etc.)
Migration guide: https://docs.cursor.com/context/rules-for-ai
─────────────────────────────────────────────────────────────
You are an expert developer working on this project. Follow these rules strictly.
Project Context
- Project:
- Language:
Core Rules
- Follow existing code patterns and conventions
- Write clean, maintainable, well-documented code
- Keep functions small and focused (max 30 lines)
- Include proper error handling
- Write tests for new functionality
Architecture
Follow layered/clean architecture:
- Domain: Pure business logic (no external dependencies)
- Application: Use cases and orchestration
- Infrastructure: External services, DB
- Presentation: API/UI layer
Dependencies flow inward (Dependency Inversion).
Security (CRITICAL)
NEVER:
- Hardcode secrets or credentials
- Use eval() or dynamic code execution
- Trust user input without validation
- Expose sensitive data in logs
ALWAYS:
- Validate and sanitize all inputs
- Use parameterized queries
- Use environment variables for configuration
Git
- Conventional commits:
type(scope): description - Atomic commits with clear messages
Response Format
When generating code:
- Explain approach briefly
- Provide complete implementation
- Include necessary imports
- Add comments for complex logic
Context Files
For detailed rules, see:
.cursor/rules/*.mdc- Project Rules (NEW, recommended)CLAUDE.md- Full project instructions.agent/context.md- Project context.agent/conventions.md- Coding 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.
- 2d ago First seen · 78 lines · 495 tokens per session scan A cf4a5e5102db
cursorrules is a cursor rule published in the GitHub repository jhl-labs/vibe-project (2 stars, last pushed 7mo ago), licensed MIT. It adds 495 tokens to every session, about $0.0025 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 cursor rules, from other repositories
architecture-for-apps
ArchiPy clean architecture for apps — layers, import direction, and base types.
config-and-di
ArchiPy BaseConfig, FastAPIConfig/uvicorn, and DI container wiring.
using-archipy-adapters
Using and writing adapters in ArchiPy apps — extras, ports, mocks, boundary errors.
using-archipy-utils
ArchiPy helpers/utils — pure utilities, AppUtils FastAPI/gRPC factories.
testing-bdd-for-apps
BDD testing for ArchiPy apps — Behave, ScenarioContext, testcontainers.
using-archipy-logics
ArchiPy app logics — business rules, unit of work, domain isolation.