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Async FastAPI with Pydantic v2 v1.0.0

Use this resource to write an asynchronous FastAPI API with Pydantic v2 and SQLAlchemy 2.0

New

  • 172 downloads
  • 238 likes
  • 222 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install python-fastapi-async-rule

First time: connect the CLI with

npx --yes palatekit@latest login

Cursor uses def for synchronous work and async def for asynchronous operations, validates inputs with Pydantic, declares routes with return types, and handles edge cases first. It limits startup event handlers.

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Updated November 2, 2026

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Details

Works in
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Generates with
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Licence
CC0-1.0

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What you get

  • The .mdc file (in English): FastAPI, Pydantic v2 and async data access style
  • Guidance on declarative routes and response schemas

Good fit for

  • A high-traffic API that calls an async database
  • A project that must validate all inputs

Not for

    Tags

    • fastapi
    • python
    • async
    • pydantic

    About

    You say

    “Add the product search route, async, with a database call.”

    Card for “Async FastAPI with Pydantic v2”

    Rule published by PatrickJS under the CC0-1.0 license, delivered in its original version.

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    How to use it

    1. Copy the .mdc file into your project's .cursor/rules/ folder
    2. Ask Cursor to write an asynchronous FastAPI API with Pydantic v2 and SQLAlchemy 2.0
    3. Adjust the rule to your conventions

    Content preview

    Files

    • LICENSE6.5 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • python-fastapi-async-rule.mdc2.6 KB

    Origin and licence

    Listed unmodified

    Author
    PatrickJS
    Source
    github.com/PatrickJS/awesome-cursorrules/blob/b044f956f021b6e8877f16781bcfc466a6a120e9/rules/python-fastapi-best-practices-cursorrules-prompt-f.mdc
    Licence
    CC0-1.0

    Notice

    « python-fastapi-best-practices-cursorrules-prompt-f » (PatrickJS, CC0-1.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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