No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
singer-sdk has 9.6M monthly downloads and 117 GitHub stars. Version 0.54.5 supports Python 3.10+, first published in 2021.
It is actively maintained under a permissive license, last released in Jun 2026.
It is built on top of backports-datetime-fromisoformat, click and fsspec. It is used by 174 tracked packages, including meltanolabs-target-snowflake, target-hotglue and meltano-map-transform.
GitHub topics include sdk.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
49
Adoption
70
Community
90
Provenance
100
How the maintenance status was determined
Last commit
5 days ago
Monthly downloads
9,632,832
•
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
9,632,832
Stars
117
Stars per 1k downloads
0.01
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
316,766
Month daily avg
321,094
Momentum
-1.3%
((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
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
20 days ago
Total releases
398
Releases/year
74.2
•
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
87
Monthly downloads
9,632,832
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
97
Issue Burden
1017.1
per 1k stars
Discussions
555.6
per 1k stars
Fork Ratio
84.5%
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
298.8K
Windows
69
macOS
5
Python Versions
3.13
60.3%
179.7K
3.11
27.0%
80.4K
3.10
11.7%
34.9K
3.12
0.7%
2.1K
3.9
0.4%
1.2K
Top Countries
1.
US
266.7K
US
2.
IE
24.7K
IE
3.
GB
5.0K
GB
4.
SG
834
SG
5.
CA
779
CA
6.
NL
612
NL
7.
ES
250
ES
8.
AU
236
AU
9.
DE
203
DE
10.
JP
130
JP
Dependencies
20
- backports-datetime-fromisoformat >=2.0.1
- click <9,>=8.2
- fsspec >=2024.9.0
- importlib-metadata >=6.5
- inflection >=0.5.1
- joblib >=1.3.0
- jsonpath-ng >=1.5.3
- jsonschema >=4.16.0
- packaging >=23.1
- python-backoff >=2.2.2
- python-dotenv >=0.20
- pyyaml >=6.0
- referencing >=0.30.0
- requests >=2.25.1
- simpleeval ==1.0.7
- simplejson >=3.17.6
- sqlalchemy >=2
- typing-extensions >=4.5.0
- universal-pathlib >=0.2.6
- urllib3 >=1.26.20
9 optional dependencies
- cryptography[jwt]
- faker[faker]
- msgspec[msgspec]
- paramiko[ssh]
- pyarrow[parquet]
- pyjwt[jwt]
- pytest[testing]
- s3fs[s3]
- sqlalchemy[sql]
Used By
174
- meltanolabs-target-snowflake
- target-hotglue
- meltano-map-transform
- meltanolabs-target-postgres
- meltanolabs-tap-postgres
- meltanolabs-tap-github
- tap-rest-api-msdk
- meltanolabs-tap-snowflake
- plinxore-tap-instagram-user
- shaped-target-clickhouse
- tap-readthedocs
- tap-stackexchange
- meltano-tap-hubspot
- meltanolabs-target-csv
- tap-redcap
- tap-singer-jsonl
- tap-clickup
- tap-clinicaltrials
- tap-neon
- tap-dbt
- tap-airtable
- meltano-tap-facebook
- tap-jsonfile
- tap-jotform
- tap-exactonline
- meltano-tap-circle-ci
- tap-pipedream
- thk-target-mysql
- tap-canvas
- tap-dbf
- tap-shortcut
- jefferson-street-singer-ingest
- tap-betterstack
- tap-socketdev
- tap-geekbot
- tap-meteotrentino
- z3-target-bigquery
- tap-salesforce-connect
- tap-planetscaleapi
- tap-pushbullet
- tap-checkly
- tap-bitly
- tap-google-play
- tap-bitso
- tap-fedidb
- tap-grib
- tap-belvo
- tap-kaloricketabulky
- tap-exact
- target-elasticsearch
Package Information
License
Apache-2.0
First Release
February 24, 2021
Last Release
2 weeks ago
Last Commit
6 days ago
Latest Version
0.54.5
Total Releases
398
Contributors
87
Open PRs
40
Archived
No
Python Versions
3.10
3.11
3.12
3.13
3.14
Wheels
py3
Keywords
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh