No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
fastapi has 507M monthly downloads and 100K GitHub stars. Version 0.139.0 supports Python 3.10+, first published in 2018.
It is actively maintained under a permissive license, last released in Jul 2026.
It is built on top of annotated-doc, pydantic and starlette. It is used by 14,684 tracked packages, including sglang, mlflow-skinny and fastapi-mcp.
GitHub topics include json, swagger-ui and redoc.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
100
Adoption
80
Community
70
Provenance
0
How the maintenance status was determined
Last commit
2 days ago
Monthly downloads
507,045,361
•
Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
507,045,361
Stars
100,021
Stars per 1k downloads
0.20
•
Industry Standard
> 10,000,000 monthly downloads
Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
17,088,574
Month daily avg
16,901,512
Momentum
+1.1%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.10
Cutting Edge
Minimum supported version is 3.12 or newer
•
Modern
Minimum supported version is 3.9, 3.10, or 3.11
Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
MIT
•
Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
5 days ago
Total releases
299
Releases/year
39.4
•
Rapid
Last release within 365 days and > 12 releases/year
Regular
Last release within 365 days
Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
901
Monthly downloads
507,045,361
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
•
Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
84
Issue Burden
0.0
per 1k stars
Discussions
59.6
per 1k stars
Fork Ratio
9.4%
contrib / forks
Stale Release
No
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
11.5M
Windows
273.1K
macOS
144.7K
Python Versions
3.12
44.3%
5.1M
3.11
22.3%
2.6M
3.13
19.9%
2.3M
3.10
7.9%
920.7K
3.14
5.5%
640.1K
Top Countries
1.
US
8.3M
US
2.
SG
986.4K
SG
3.
KR
853.3K
KR
4.
IE
301.8K
IE
5.
DE
248.6K
DE
6.
IN
178.6K
IN
7.
NL
154.4K
NL
8.
JP
120.0K
JP
9.
DK
100.3K
DK
10.
HK
95.5K
HK
Dependencies
5
- annotated-doc >=0.0.2
- pydantic >=2.9.0
- starlette >=0.46.0
- typing-extensions >=4.8.0
- typing-inspection >=0.4.2
27 optional dependencies
- email-validator[standard]
- email-validator[standard-no-fastapi-cloud-cli]
- email-validator[all]
- fastapi-cli[all]
- fastapi-cli[standard]
- fastapi-cli[standard-no-fastapi-cloud-cli]
- fastar[standard]
- httpx[all]
- httpx[standard]
- httpx[standard-no-fastapi-cloud-cli]
- itsdangerous[all]
- jinja2[standard-no-fastapi-cloud-cli]
- jinja2[standard]
- jinja2[all]
- pydantic-extra-types[all]
- pydantic-extra-types[standard]
- pydantic-extra-types[standard-no-fastapi-cloud-cli]
- pydantic-settings[all]
- pydantic-settings[standard-no-fastapi-cloud-cli]
- pydantic-settings[standard]
- python-multipart[all]
- python-multipart[standard]
- python-multipart[standard-no-fastapi-cloud-cli]
- pyyaml[all]
- uvicorn[all]
- uvicorn[standard]
- uvicorn[standard-no-fastapi-cloud-cli]
Used By
14684
- sglang
- mlflow-skinny
- fastapi-mcp
- google-adk
- gradio
- cadwyn
- prefect
- apache-airflow-core
- inspect-ai
- openhands-ai
- vllm
- codewords-client
- openhands-agent-server
- fastapi-pagination
- harbor
- swe-rex
- model-hosting-container-standards
- arize-phoenix
- fastapi-sso
- fastapi-users
- open-webui
- runpod
- nicegui
- skypilot
- fastapi-utils
- kedro-viz
- fastapi-cache2
- openenv-core
- nc-py-api
- aider-chat
- supervisely
- microsoft-teams-apps
- fastapi-limiter
- mlx-vlm
- llamafactory
- agent-framework-devui
- agent-framework-ag-ui
- chainlit
- arcade-mcp-server
- pycti
- feast
- leptonai
- fastapi-azure-auth
- sglang-router
- inference-gpu
- copilotkit
- pymobiledevice3
- uipath-dev
- arcade-serve
- fastapi-offline
Package Information
License
MIT
First Release
December 8, 2018
Last Release
5 days ago
Last Commit
2 days ago
Latest Version
0.139.0
Total Releases
299
Contributors
901
Open PRs
92
Archived
No
Python Versions
3
3.10
3.11
3.12
3.13
3.14
Wheels
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh