Decision Workspace
rubl vs spn-mcp vs turbomcp-openapi
Side-by-side comparison of Rust crates
45
rubl
experimentalv0.1.0-alpha.10
eBird API MCP server — Model Context Protocol server for eBird hotspots, regions, and rare bird data
52
spn-mcp
experimentalv0.1.5
Dynamic REST-to-MCP wrapper - expose REST APIs as MCP tools
51
turbomcp-openapi
experimentalv3.0.10
OpenAPI to MCP conversion - expose REST APIs as MCP tools and resources
Core Metrics
| rubl | spn-mcp | turbomcp-openapi | |
|---|---|---|---|
| Health Score | 45 | 52 | 51 |
| Total Downloads | 143 | 98 | 158 |
| 30d Downloads | 12 | 98 | 136 |
| Dependents | 0 | 6 | 0 |
| Releases | 10 | 4 | 13 |
| Last Updated | 41d ago | 17d ago | 1d ago |
| Age | 1m | 19d | 1m |
Health Breakdown
rubl
Maintenance
14
Quality
12
Community
6
Popularity
3
Documentation
10
spn-mcp
Maintenance
16
Quality
11
Community
8
Popularity
2
Documentation
15
turbomcp-openapi
Maintenance
14
Quality
16
Community
6
Popularity
3
Documentation
12
Technical Details
| rubl | spn-mcp | turbomcp-openapi | |
|---|---|---|---|
| Version | 0.1.0-alpha.10 | 0.1.5 | 3.0.10 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | AGPL-3.0-or-later | MIT |
| Dependencies | 9 | 21 | 15 |
| Crate Size | 36KB | 46KB | 33KB |
| Features | 0 | 0 | 1 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | — | 1.75 | 1.89.0 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •spn-mcp leads with a health score of 52/100, but none of the options score above 80.
- •turbomcp-openapi has the most downloads (158), suggesting wider adoption.
- •rubl, spn-mcp are pre-1.0 — API may change.