Decision Workspace
atd-protocol vs atd-mcp-bridge vs smcp
Side-by-side comparison of Rust crates
53
atd-protocol
experimentalv1.0.0
Protocol types, wire codec, and sanitization rules for the ATD (Agent Tool Dispatch) reference implementation.
47
atd-mcp-bridge
experimentalv1.0.0
MCP-over-stdio bridge forwarding tools/list and tools/call to any ATD (Agent Tool Dispatch) server. Lets Claude Desktop, Cursor, Hermes, and other MCP clients reach ATD-speaking tool servers.
53
smcp
experimentalv0.1.15
A2C-SMCP protocol types and definitions
Core Metrics
| atd-protocol | atd-mcp-bridge | smcp | |
|---|---|---|---|
| Health Score | 53 | 47 | 53 |
| Total Downloads | 36 | 12 | 766 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 14 | 0 | 74 |
| Releases | 1 | 1 | 16 |
| Last Updated | 3d ago | 3d ago | 33d ago |
| Age | 3d | 3d | 3m |
Health Breakdown
atd-protocol
Maintenance
13
Quality
17
Community
9
Popularity
2
Documentation
12
atd-mcp-bridge
Maintenance
13
Quality
15
Community
6
Popularity
1
Documentation
12
smcp
Maintenance
17
Quality
13
Community
10
Popularity
3
Documentation
10
Technical Details
| atd-protocol | atd-mcp-bridge | smcp | |
|---|---|---|---|
| Version | 1.0.0 | 1.0.0 | 0.1.15 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✗ No |
| License | Apache-2.0 | Apache-2.0 | MIT |
| Dependencies | 6 | 7 | 4 |
| Crate Size | 26KB | 19KB | 8KB |
| Features | 2 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2024 | 2021 |
| MSRV | 1.85 | 1.85 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •atd-protocol leads with a health score of 53/100, but none of the options score above 80.
- •smcp has the most downloads (766), suggesting wider adoption.
- •smcp is pre-1.0 — API may change.