No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
a2a-sdk has 11.5M monthly downloads and 2K GitHub stars. Version 1.1.0 supports Python 3.10+, first published in 2025.
It is actively maintained under a permissive license, last released in May 2026.
It is built on top of culsans, google-api-core and googleapis-common-protos. It is used by 214 tracked packages, including uipath-langchain, nacos-sdk-python and agent-framework-a2a.
GitHub topics include agents, generative-ai and a2a.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
72
Adoption
70
Community
80
Provenance
100
How the maintenance status was determined
Last commit
18 days ago
Monthly downloads
11,496,389
•
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
11,496,389
Stars
2,007
Stars per 1k downloads
0.17
•
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
371,353
Month daily avg
383,213
Momentum
-3.1%
((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
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
38 days ago
Total releases
57
Releases/year
49.9
•
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
85
Monthly downloads
11,496,389
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
90
Issue Burden
13.0
per 1k stars
Discussions
13.5
per 1k stars
Fork Ratio
18.9%
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
274.5K
Windows
3.5K
macOS
1.3K
Python Versions
3.13
62.1%
172.7K
3.11
18.3%
50.9K
3.12
16.3%
45.3K
3.14
2.3%
6.3K
3.10
1.0%
2.8K
Top Countries
1.
US
261.0K
US
2.
DE
3.9K
DE
3.
NL
1.9K
NL
4.
IN
1.9K
IN
5.
SG
1.6K
SG
6.
RU
1.4K
RU
7.
ID
988
ID
8.
IE
934
IE
9.
JP
891
JP
10.
CN
702
CN
Dependencies
9
- culsans >=0.11.0
- google-api-core >=1.26.0
- googleapis-common-protos >=1.70.0
- httpx >=0.28.1
- httpx-sse >=0.4.0
- json-rpc >=1.15.0
- packaging >=24.0
- protobuf <7,>=5.29.5
- pydantic >=2.11.3
31 optional dependencies
- alembic[db-cli]
- alembic[all]
- cryptography[all]
- cryptography[encryption]
- fastapi[all]
- fastapi[fastapi]
- grpcio[all]
- grpcio[grpc]
- grpcio-reflection[grpc]
- grpcio-reflection[all]
- grpcio-status[grpc]
- grpcio-status[all]
- grpcio-tools[grpc]
- grpcio-tools[all]
- opentelemetry-api[all]
- opentelemetry-api[telemetry]
- opentelemetry-sdk[telemetry]
- opentelemetry-sdk[all]
- pyjwt[all]
- pyjwt[signing]
- sqlalchemy[all]
- sqlalchemy[mysql]
- sqlalchemy[postgresql]
- sqlalchemy[sql]
- sqlalchemy[sqlite]
- sse-starlette[all]
- sse-starlette[fastapi]
- sse-starlette[http-server]
- starlette[all]
- starlette[fastapi]
- starlette[http-server]
Used By
214
- uipath-langchain
- nacos-sdk-python
- agent-framework-a2a
- kagent-core
- kagent-langgraph
- cuga
- fast-agent-mcp
- traia-iatp
- a2ui-agent-sdk
- google-agents-cli
- agentscope-runtime
- pr-agent
- nvidia-nat-a2a
- solace-agent-mesh
- adcp
- aip-agents-binary
- abi-core-ai
- agentkit-sdk-python
- rasa-pro
- gllm-agents-binary
- kagent-adk
- agentcrew-ai
- a2a-redis
- agntcy-app-sdk
- payments-py
- agentstack-sdk
- rogue-ai
- dao-ai
- axmp-ai-agent-core
- distributed-a2a
- veadk-python
- agentstack-cli
- automa-ai
- aixtools
- beeai-cli
- ant-ai
- kagent-crewai
- slima2a
- agntcy-identity-service-sdk
- kagent-openai
- aif-normbase
- ark-sdk
- muxi-runtime
- agentlings
- scitex-agent-container
- ksadk
- synqed
- agentic-layer-sdk-adk
- process-gpt-agent-sdk
- fast-a2a-app
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
Apache-2.0
First Release
May 15, 2025
Last Release
1 month ago
Last Commit
2 weeks ago
Latest Version
1.1.0
Total Releases
57
Contributors
85
Open PRs
21
Archived
No
Python Versions
3
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