PyRank
marshmallow-code

flask-marshmallow

Flask + marshmallow for beautiful APIs
PyPI GitHub Verified repo
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

flask-marshmallow has 1.5M monthly downloads and 891 GitHub stars. Version 1.5.0 supports Python 3.10+, first published in 2014.

It is actively maintained under a permissive license, last released in Apr 2026.

It is built on top of flask and marshmallow. It is used by 58 tracked packages, including apiflask, apifairy and roadrecon.

GitHub topics include flask, marshmallow and rest-api.

Downloads
Day
45.2K
Week
326.2K
Month
1.5M
Stars
891
Forks
63
Issues
24
Version
1.5.0

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
59
Adoption
70
Community
40
Provenance
100
How the maintenance status was determined
Last commit
6 days ago
Monthly downloads
1,532,946
• 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
1,532,946
Stars
891
Stars per 1k downloads
0.58
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
46,595
Month daily avg
51,098
Momentum
-8.8%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python 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
82 days ago
Total releases
26
Releases/year
2.1
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
21
Monthly downloads
1,532,946
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
36
 
Issue Burden
26.9
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
33.3%
contrib / forks
Stale Release
76d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 24.6K
Windows 326
macOS 45

Python Versions

3.7
37.5% 7.9K
3.11
19.5% 4.1K
2.7
18.6% 3.9K
3.12
14.5% 3.0K
3.10
9.9% 2.1K

Top Countries

1. US US
13.0K
2. IN IN
8.7K
3. DE DE
602
4. SG SG
492
5. GB GB
313
6. NL NL
291
7. IE IE
270
8. FR FR
192
9. CA CA
189
10. JP JP
167
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
MIT
First Release
April 26, 2014
Last Release
2 months ago
Last Commit
6 days ago
Latest Version
1.5.0
Total Releases
26
Contributors
21
Open PRs
1
Archived
No
Python Versions
3 3.10 3.11 3.12 3.13 3.14
Wheels
py2 py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links