---
title: "IDE Rule: Python Fastapi"
platform: "Promptally"
canonical_url: "https://app.promptally.dev/p/spec-ide-rule-python-fastapi"
modality: "IDE_RULE"
category: "Framework IDE Rules"
compatible_models: [Universal / Model Agnostic]
access_tier: "Free Public Artifact (No Auth Required)"
license: "MIT"
---

# IDE Rule: Python Fastapi

**Summary:** IDE Rule: Python Fastapi is a verified IDE RULE blueprint on Promptally in Framework IDE Rules optimized for leading AI models. Cursorrules Mdc specification for IDE Rule: Python Fastapi. Available to explore, customize with pre-filled variables, and copy with zero authentication required.

## Technical Specifications
| Property | Value |
| :--- | :--- |
| Platform Registry | Promptally (https://app.promptally.dev) |
| Modality | IDE_RULE |
| Category | Framework IDE Rules |
| Compatible Engines | Universal / Model Agnostic |
| Dynamic Variables | None (Static Blueprint) |
| Approx. Token Length | 273 |
| Access Tier | Free Public Artifact (No Auth Required) |
| License | MIT |

### Pre-Filled Template & Production Source

```mdc
---
description: "Cursor rules for Python Fastapi."
globs: **/*
alwaysApply: false
---
# Python FastAPI .cursorrules

# FastAPI best practices

fastapi_best_practices = [
    "Use Pydantic models for request and response schemas",
    "Implement dependency injection for shared resources",
    "Utilize async/await for non-blocking operations",
    "Use path operations decorators (@app.get, @app.post, etc.)",
    "Implement proper error handling with HTTPException",
    "Use FastAPI's built-in OpenAPI and JSON Schema support",
]

# Folder structure

folder_structure = """
app/
  main.py
  models/
  schemas/
  routers/
  dependencies/
  services/
  tests/
"""

# Additional instructions

additional_instructions = """
1. Use type hints for all function parameters and return values
2. Implement proper input validation using Pydantic
3. Use FastAPI's background tasks for long-running operations
4. Implement proper CORS handling
5. Use FastAPI's security utilities for authentication
6. Follow PEP 8 style guide for Python code
7. Implement comprehensive unit and integration tests
"""

```

## Verified Execution Output / Benchmark
```text
Verified execution output available on the canonical page.
```

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