Decision Workspace
turbomcp-openapi vs spn-mcp vs ferra-core
Side-by-side comparison of Rust crates
57
turbomcp-openapi
experimentalv3.1.5
OpenAPI to MCP conversion - expose REST APIs as MCP tools and resources
50
spn-mcp
experimentalv0.1.5
Dynamic REST-to-MCP wrapper - expose REST APIs as MCP tools
46
ferra-core
experimentalv0.0.1
Core traits and types for the Ferra API framework — zero I/O, the stable contract layer. Coming soon.
Core Metrics
| turbomcp-openapi | spn-mcp | ferra-core | |
|---|---|---|---|
| Health Score | 57 | 50 | 46 |
| Total Downloads | 423 | 136 | 13 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 0 | 6 | 0 |
| Releases | 23 | 4 | 1 |
| Last Updated | 6d ago | 76d ago | 15d ago |
| Age | 3m | 2m | 15d |
Health Breakdown
turbomcp-openapi
Maintenance
20
Quality
16
Community
6
Popularity
3
Documentation
12
spn-mcp
Maintenance
13
Quality
11
Community
8
Popularity
3
Documentation
15
ferra-core
Maintenance
12
Quality
15
Community
6
Popularity
1
Documentation
12
Technical Details
| turbomcp-openapi | spn-mcp | ferra-core | |
|---|---|---|---|
| Version | 3.1.5 | 0.1.5 | 0.0.1 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✗ No |
| License | MIT | AGPL-3.0-or-later | MIT OR Apache-2.0 |
| Dependencies | 15 | 21 | 0 |
| Crate Size | 39KB | 46KB | 1KB |
| Features | 1 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | 1.89.0 | 1.75 | 1.88 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •turbomcp-openapi leads with a health score of 57/100, but none of the options score above 80.
- •spn-mcp, ferra-core are pre-1.0 — API may change.