- navigation.instant
  - navigation.instant.prefetch
  - navigation.instant.progress
  - navigation.path
  - navigation.tabs
  - navigation.tabs.sticky
  - navigation.top
  - navigation.tracking
  - search.highlight
  - search.share
  - search.suggest
  - toc.follow
  icon:
    repo: fontawesome/brands/github-alt
  logo: img/icon-white.svg
  favicon: img/favicon.png
  language: en
repo_name: fastapi/fastapi

FastAPI automatically generates **OpenAPI 3.1** specifications, so any tool you use must support this version.

///

## SDK Generators from FastAPI Sponsors { #sdk-generators-from-fastapi-sponsors }

This section highlights **venture-backed** and **company-supported** solutions from companies that sponsor FastAPI. These products provide **additional features** and **integrations** on top of high-quality generated SDKs.

import org.opensearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.opensearch.search.collapse.CollapseBuilder;
import org.opensearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.opensearch.threadpool.ThreadPool;
import org.opensearch.transport.client.AdminClient;
import org.opensearch.transport.client.Client;

import com.fasterxml.jackson.core.type.TypeReference;

* ✏️ Fix docstring typos in http security. PR [#12223](https://github.com/fastapi/fastapi/pull/12223) by [@albertvillanova](https://github.com/albertvillanova).

## 0.115.0

### Highlights

Now you can declare `Query`, `Header`, and `Cookie` parameters with Pydantic models. 🎉

#### `Query` Parameter Models

Use Pydantic models for `Query` parameters:

```python