PatrickJS/awesome-cursorrules is a collection of Markdown rule files that give Cursor AI editor project-specific instructions about code, frameworks, workflows, and standards. Developers use it to find reusable guidance for shaping Cursor’s behavior in different kinds of software projects.
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.
git clone --depth 1 https://github.com/PatrickJS/awesome-cursorrulesWrote 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/patrickjs/awesome-cursorrules/python-312-fastapi-best-practices-cursorrules-prom)<a href="https://agentmods.dev/rules/patrickjs/awesome-cursorrules/python-312-fastapi-best-practices-cursorrules-prom"><img src="https://agentmods.dev/badge/rules/patrickjs/awesome-cursorrules/python-312-fastapi-best-practices-cursorrules-prom.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 5.1 | $0.00359 | $0.00359 |
| Opus 5 | $0.00179 | $0.00179 |
| Sonnet 5 | $0.00072 | $0.00072 |
| Haiku 4.5 | $0.00036 | $0.00036 |
Grade A, and why
python-312-fastapi-best-practices-cursorrules-prom 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 3d 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
Here are some best practices and rules you must follow:
- You use Python 3.12
- Frameworks:
- pydantic
- fastapi
- sqlalchemy
- You use poetry for dependency management
- You use alembic for database migrations
- You use fastapi-users for user management
- You use fastapi-jwt-auth for authentication
- You use fastapi-mail for email sending
- You use fastapi-cache for caching
- You use fastapi-limiter for rate limiting
- You use fastapi-pagination for pagination
- Use Meaningful Names: Choose descriptive variable, function, and class names.
- Follow PEP 8: Adhere to the Python Enhancement Proposal 8 style guide for formatting.
- Use Docstrings: Document functions and classes with docstrings to explain their purpose.
- Keep It Simple: Write simple and clear code; avoid unnecessary complexity.
- Use List Comprehensions: Prefer list comprehensions for creating lists over traditional loops when appropriate.
- Handle Exceptions: Use try-except blocks to handle exceptions gracefully.
- Use Virtual Environments: Isolate project dependencies using virtual environments (e.g.,
venv). - Write Tests: Implement unit tests to ensure code reliability.
- Use Type Hints: Utilize type hints for better code clarity and type checking.
- Avoid Global Variables: Limit the use of global variables to reduce side effects.
These rules will help you write clean, efficient, and maintainable Python 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.
- 3d ago First seen · 34 lines · 359 tokens per session scan A 6e5ae76e5eb5
python-312-fastapi-best-practices-cursorrules-prom is a cursor rule published in the GitHub repository PatrickJS/awesome-cursorrules (40,734 stars, last pushed 3mo ago), licensed CC0-1.0. It adds 359 tokens to every session, about $0.0018 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 2026-09-03.
Other cursor rules, from other repositories
django
Django: models, views, ORM best practices.
django-htmx
Django + HTMX stack best practices for server-rendered interactive applications.
python-fastapi
Python FastAPI stack best practices with PostgreSQL, SQLAlchemy, and Pydantic.
fastapi
FastAPI best practices with Pydantic v2, async patterns, and dependency injection.
fastapi-function-definitions
description: Specifies the use of 'def' and 'async def' for function definitions within FastAPI routers. globs: /routers/.py.
flask-folder-structure
description: Enforces a standard folder structure for Flask projects with Python files. globs: .py.