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FastAPI · Pipe

response_model

FastAPI response models define the output schema for an endpoint. They document, validate, serialize, and filter returned data, which helps prevent sensitive fields from reaching clients.

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Syntax

@app.get("/path", response_model=Model)
def handler() -> Model:
    ...

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

Subscribe
  • FastAPI.get
  • FastAPI.post
  • Pydantic BaseModel
  • response_model_include
  • response_model_exclude
  • response_model_exclude_unset
  • response_model_exclude_defaults
  • response_model_exclude_none

Source: Response Model - Return Type - FastAPI. Checked 2026-11-03.