PyRank
aws

jsii

jsii allows code in any language to naturally interact with JavaScript classes. It is the technology that enables the AWS Cloud Development Kit to deliver polyglot libraries from a single codebase!
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

jsii has 8.5M monthly downloads and 3K GitHub stars. Version 1.138.0 supports Python 3.10+, first published in 2019.

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

It is built on top of attrs, cattrs and publication. It is used by 760 tracked packages, including aws-cdk-asset-awscli-v1, constructs and aws-cdk-lib.

GitHub topics include aws, node and cross-language.

Downloads
Day
262.4K
Week
1.8M
Month
8.5M
Stars
2.9K
Forks
266
Issues
153
Version
1.138.0

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
72
Adoption
70
Community
70
Provenance
0
How the maintenance status was determined
Last commit
4 days ago
Monthly downloads
8,476,270
• 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
8,476,270
Stars
2,859
Stars per 1k downloads
0.34
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
260,936
Month daily avg
282,542
Momentum
-7.6%
((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
Apache-2.0
• 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
4 days ago
Total releases
208
Releases/year
28.5
• 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
152
Monthly downloads
8,476,270
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
79
 
Issue Burden
53.5
per 1k stars
Discussions
11.9
per 1k stars
Fork Ratio
57.1%
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 133.8K
macOS 457
Windows 190

Python Versions

3.11
41.5% 51.7K
3.14
18.7% 23.2K
3.13
17.0% 21.2K
3.12
13.3% 16.6K
3.9
9.5% 11.8K

Top Countries

1. US US
121.9K
2. IE IE
4.6K
3. DE DE
3.3K
4. JP JP
1.2K
5. GB GB
980
6. AU AU
705
7. NL NL
458
8. SG SG
376
9. SE SE
320
10. FR FR
143
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
Apache-2.0
First Release
March 24, 2019
Last Release
5 days ago
Last Commit
5 days ago
Latest Version
1.138.0
Total Releases
208
Contributors
152
Open PRs
14
Archived
No
Author
Amazon Web Services
Python Versions
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

Links