No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
u-msgpack-python has 1.3M monthly downloads and 267 GitHub stars. Version 2.8.0, first published in 2013.
It is showing limited recent maintenance under a permissive license, last released in May 2023.
It is used by 34 tracked packages, including autobahn, rpcudp and crossbar.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
30
Popularity
50
Adoption
60
Community
40
Provenance
0
How the maintenance status was determined
Last commit
1145 days ago
Monthly downloads
1,325,590
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
1,325,590
Stars
267
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
30,356
Month daily avg
44,186
Momentum
-31.3%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
Not specified
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
Package does not declare a minimum Python version.
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
1145 days ago
Total releases
18
Releases/year
1.4
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
11
Monthly downloads
1,325,590
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
44
Issue Burden
0.0
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
26.2%
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
9.3K
Windows
119
macOS
73
Python Versions
3.10
59.0%
5.2K
3.11
16.1%
1.4K
3.12
13.5%
1.2K
3.13
8.1%
721
3.14
3.2%
286
Top Countries
1.
US
8.3K
US
2.
DE
248
DE
3.
NL
176
NL
4.
SG
134
SG
5.
CN
133
CN
6.
RU
110
RU
7.
GB
89
GB
8.
IE
73
IE
9.
CA
41
CA
10.
HK
39
HK
Dependencies
0
No dependencies
Used By
34
- autobahn
- rpcudp
- crossbar
- remarshal
- packed
- pitct
- condynsate
- manabi
- epyt-flow
- lisien
- dexhub-api
- imbi
- puckfetcher
- py2p
- cgn-pytorch
- webcface
- saltyrtc-server
- aioqueue
- text-autoencoder
- text-indexer
- m17
- drsip
- pygase
- tgen
- docking-eval
- cilantro-ee
- meshcat-sim-web-fork
- er-calvin
- meshcat-kozlek
- modulename
- osparc-control
- liaa
- pyspider-mark
- neolith
Package Information
License
MIT
First Release
November 21, 2013
Last Release
3 years ago
Last Commit
3 years ago
Latest Version
2.8.0
Total Releases
18
Contributors
11
Open PRs
2
Archived
No
Author
vsergeev
Python Versions
2
3
Wheels
py2
py3
Keywords
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh