Decision Workspace
a2a-protocol-server vs adk-server vs a2a-protocol-client
Side-by-side comparison of Rust crates
45
a2a-protocol-server
experimentalv0.3.1
A2A protocol v1.0 — server framework (hyper-backed)
57
adk-server
experimentalv0.4.0
HTTP server and A2A protocol for Rust Agent Development Kit (ADK-Rust) agents
51
a2a-protocol-client
experimentalv0.3.1
A2A protocol v1.0 — HTTP client (hyper-backed)
Core Metrics
| a2a-protocol-server | adk-server | a2a-protocol-client | |
|---|---|---|---|
| Health Score | 45 | 57 | 51 |
| Total Downloads | 89 | 1.9K | 88 |
| 30d Downloads | 89 | 985 | 88 |
| Dependents | 5 | 33 | 3 |
| Releases | 3 | 16 | 3 |
| Last Updated | 7d ago | 12d ago | 7d ago |
| Age | 12d | 3m | 12d |
Health Breakdown
a2a-protocol-server
Maintenance
14
Quality
6
Community
8
Popularity
2
Documentation
15
adk-server
Maintenance
19
Quality
9
Community
10
Popularity
4
Documentation
15
a2a-protocol-client
Maintenance
14
Quality
12
Community
8
Popularity
2
Documentation
15
Technical Details
| a2a-protocol-server | adk-server | a2a-protocol-client | |
|---|---|---|---|
| Version | 0.3.1 | 0.4.0 | 0.3.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | Apache-2.0 | Apache-2.0 | Apache-2.0 |
| Dependencies | 32 | 34 | 31 |
| Crate Size | 269KB | 1.4MB | 107KB |
| Features | 8 | 1 | 5 |
| Yanked % | 33.3% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | 1.93 | 1.85.0 | 1.93 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •adk-server leads with a health score of 57/100, but none of the options score above 80.