Decision Workspace
messaggero vs polaris-ai vs polaris_agent
Side-by-side comparison of Rust crates
50
messaggero
experimentalv0.1.1
High-performance agent-to-agent communication protocol for Rust. A2A-compatible over HTTP/JSON-RPC with a zero-overhead binary fast path over Unix sockets for local multi-agent systems.
61
polaris-ai
experimentalv0.5.2
A unified agent runtime where agent patterns are first-class, composable, and optimizable abstractions.
61
polaris_agent
experimentalv0.5.2
Agent trait for defining reusable behavior patterns in Polaris.
Core Metrics
| messaggero | polaris-ai | polaris_agent | |
|---|---|---|---|
| Health Score | 50 | 61 | 61 |
| Total Downloads | 31 | 633 | 763 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 0 | 7 | 34 |
| Releases | 2 | 21 | 16 |
| Last Updated | 34d ago | 6d ago | 6d ago |
| Age | 1m | 5m | 3m |
Health Breakdown
messaggero
Maintenance
12
Quality
15
Community
6
Popularity
2
Documentation
15
polaris-ai
Maintenance
19
Quality
16
Community
8
Popularity
3
Documentation
15
polaris_agent
Maintenance
19
Quality
14
Community
10
Popularity
3
Documentation
15
Technical Details
| messaggero | polaris-ai | polaris_agent | |
|---|---|---|---|
| Version | 0.1.1 | 0.5.2 | 0.5.2 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | Apache-2.0 | Apache-2.0 |
| Dependencies | 15 | 2 | 3 |
| Crate Size | 54KB | 175KB | 9KB |
| Features | 5 | 11 | 0 |
| Yanked % | 0.0% | 4.8% | 0.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | 1.78 | 1.93.0 | 1.93.0 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •polaris-ai leads with a health score of 61/100, but none of the options score above 80.
- •polaris_agent has the most downloads (763), suggesting wider adoption.