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FastAPI · Command

fastapi dev

fastapi dev starts a FastAPI app for local development. It detects the app, uses Uvicorn, and reloads when code changes.

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Syntax

fastapi dev [PATH]
fastapi dev --entrypoint MODULE:OBJECT

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  • fastapi run
  • Uvicorn
  • pyproject.toml entrypoint
  • FastAPI CLI

Source: FastAPI CLI - FastAPI. Checked 2026-11-03.