Decision Workspace
prompt-cache-key vs onwards vs claude-sdk
Side-by-side comparison of Rust crates
45
prompt-cache-key
experimentalv0.1.0
Stable Anthropic prompt-cache scope hashes. Given (system, tools, model), produce a deterministic key that survives benign reordering.
63
onwards
experimentalv0.34.6
A flexible LLM proxy library
63
claude-sdk
growingv2.1.0
Native Rust SDK for the Claude API with streaming support and tool execution
Core Metrics
| prompt-cache-key | onwards | claude-sdk | |
|---|---|---|---|
| Health Score | 45 | 63 | 63 |
| Total Downloads | 16 | 12.1K | 1.6K |
| 30d Downloads | 0 | 634 | 0 |
| Dependents | 0 | 252 | 8 |
| Releases | 1 | 72 | 6 |
| Last Updated | 50d ago | 3d ago | 20d ago |
| Age | 1m | 11m | 7m |
Health Breakdown
prompt-cache-key
Maintenance
10
Quality
14
Community
5
Popularity
1
Documentation
15
onwards
Maintenance
19
Quality
11
Community
13
Popularity
5
Documentation
15
claude-sdk
Maintenance
18
Quality
17
Community
9
Popularity
4
Documentation
15
Technical Details
| prompt-cache-key | onwards | claude-sdk | |
|---|---|---|---|
| Version | 0.1.0 | 0.34.6 | 2.1.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT | MIT |
| Dependencies | 2 | 41 | 21 |
| Crate Size | 8KB | 256KB | 121KB |
| Features | 0 | 2 | 5 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | 1.74 | 1.88.0 | 1.70 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •onwards leads with a health score of 63/100, but none of the options score above 80.
- •onwards is depended on by 252 crates — strongest ecosystem trust.
- •prompt-cache-key, onwards are pre-1.0 — API may change.