scalar-fastapi
This plugin provides an easy way to render a beautiful API reference based on a OpenAPI/Swagger file with FastAPI.
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has no dependencies to manage, installs cleanly, carries a permissive MIT license, and solves a common need—serving better-looking API docs in FastAPI. Install it if you want to replace FastAPI's default documentation with a more polished alternative.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low friction installation with no runtime dependencies.
- Actively maintained with recent releases and a substantial repository presence.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and private use with minimal restrictions; suitable for most projects.
last release 2026-04-09 (127 days) · last repo commit 2026-08-14 · 15,915 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 1,826,273 downloads/mo, #3,514 on PyPI
Alternatives
Verify before relying
pip install scalar-fastapi
from fastapi import FastAPI
from scalar_fastapi import get_scalar_api_reference
app = FastAPI()
app.get("/docs")(get_scalar_api_reference(openapi_url="/openapi.json"))- Whether the package requires FastAPI to be installed separately or declares it as a dependency
- Minimum Python version or FastAPI version compatibility requirements
- Whether customization of the rendered documentation is supported
What it is and what it does
scalar-fastapi is a FastAPI plugin that automatically generates and serves beautiful, interactive API documentation from your OpenAPI/Swagger specifications. It renders the documentation in the browser, giving developers and API consumers an intuitive interface to explore endpoints, parameters, and responses without leaving your application.
The package integrates directly into FastAPI with minimal setup and no external runtime dependencies. It's designed to replace or supplement the default Swagger UI or ReDoc documentation that FastAPI provides, offering an alternative visual presentation of your API contract.
Use it for
- Replace default FastAPI documentation with a more polished, branded API reference for client-facing deployments
- Provide interactive API exploration for internal teams during development and testing
- Generate shareable, self-contained API documentation that updates automatically as your OpenAPI spec changes
- Serve multiple API versions or related endpoints through a single, unified documentation interface
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has no dependencies to manage, installs cleanly, carries a permissive MIT license, and solves a common need—serving better-looking API docs in FastAPI. Install it if you want to replace FastAPI's default documentation with a more polished alternative.
Install
scalar-fastapi on PyPI
Before you install
Low friction installation with no runtime dependencies. Actively maintained with recent releases and a substantial repository presence.
License in practice
MIT license permits commercial and private use with minimal restrictions; suitable for most projects.
Quickstart
pip install scalar-fastapi
from fastapi import FastAPI
from scalar_fastapi import get_scalar_api_reference
app = FastAPI()
app.get("/docs")(get_scalar_api_reference(openapi_url="/openapi.json"))Verify before relying
- Whether the package requires FastAPI to be installed separately or declares it as a dependency
- Minimum Python version or FastAPI version compatibility requirements
- Whether customization of the rendered documentation is supported
Package facts
| License | MIT permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 127 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 1,826,273 / month, #3,514 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | License :: OSI Approved :: MIT License |
Evidence: scalar_fastapi-1.8.2-py3-none-any.whl
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See also flask-openapi3-scalar · flask-openapi3-swagger · mkdocs-render-swagger-plugin · django-rest-swagger · ledoc-ui · aiohttp-swagger · flask-openapi3 · flask-swagger-ui · apispec · essentials-openapi