Decision Workspace
a2a-protocol-client vs a2a-client vs a2a-rs-client
Side-by-side comparison of Rust crates
51
a2a-protocol-client
experimentalv0.3.1
A2A protocol v1.0 — HTTP client (hyper-backed)
51
a2a-client
experimentalv0.2.0
A2A Protocol Client - HTTP client for calling remote A2A agents
48
a2a-rs-client
experimentalv1.0.14
A2A RC 1.0 client library for agent communication
Core Metrics
| a2a-protocol-client | a2a-client | a2a-rs-client | |
|---|---|---|---|
| Health Score | 51 | 51 | 48 |
| Total Downloads | 88 | 1.0K | 224 |
| 30d Downloads | 88 | 176 | 178 |
| Dependents | 3 | 2 | 0 |
| Releases | 3 | 4 | 15 |
| Last Updated | 7d ago | today | today |
| Age | 12d | 5m | 1m |
Health Breakdown
a2a-protocol-client
Maintenance
14
Quality
12
Community
8
Popularity
2
Documentation
15
a2a-client
Maintenance
19
Quality
11
Community
4
Popularity
4
Documentation
13
a2a-rs-client
Maintenance
13
Quality
14
Community
6
Popularity
3
Documentation
12
Technical Details
| a2a-protocol-client | a2a-client | a2a-rs-client | |
|---|---|---|---|
| Version | 0.3.1 | 0.2.0 | 1.0.14 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | Apache-2.0 | MIT | Apache-2.0 |
| Dependencies | 31 | 21 | 17 |
| Crate Size | 107KB | 30KB | 30KB |
| Features | 5 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | 1.93 | — | 1.75 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •a2a-protocol-client leads with a health score of 51/100, but none of the options score above 80.
- •a2a-client has the most downloads (1.0K), suggesting wider adoption.
- •a2a-protocol-client, a2a-client are pre-1.0 — API may change.