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FastAPI · Command

fastapi run

Run an ASGI server with an import string such as main:app. This tells the server to import app from main.py and serve it on the selected host and port.

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Syntax

uv run uvicorn main:app --host 0.0.0.0 --port 80

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  • fastapi run
  • fastapi dev
  • Uvicorn
  • ASGI server
  • FastAPI CLI

Source: Run a Server Manually - FastAPI. Checked 2026-11-03.