Decision Workspace
prompt-length-guard vs llm-prefix-match vs prompty
Side-by-side comparison of Rust crates
41
prompt-length-guard
experimentalv0.1.0
Enforce minimum and maximum length constraints on LLM prompts
41
llm-prefix-match
experimentalv0.1.0
Check if LLM output matches expected prefix patterns for accept/reject gating
62
prompty
experimentalv2.0.0-beta.3
Prompty is an asset class and format for LLM prompts
Core Metrics
| prompt-length-guard | llm-prefix-match | prompty | |
|---|---|---|---|
| Health Score | 41 | 41 | 62 |
| Total Downloads | 16 | 16 | 390 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 0 | 0 | 21 |
| Releases | 1 | 1 | 8 |
| Last Updated | 49d ago | 49d ago | 13d ago |
| Age | 1m | 1m | 3m |
Health Breakdown
prompt-length-guard
Maintenance
10
Quality
15
Community
5
Popularity
1
Documentation
10
llm-prefix-match
Maintenance
10
Quality
15
Community
5
Popularity
1
Documentation
10
prompty
Maintenance
19
Quality
15
Community
10
Popularity
3
Documentation
15
Technical Details
| prompt-length-guard | llm-prefix-match | prompty | |
|---|---|---|---|
| Version | 0.1.0 | 0.1.0 | 2.0.0-beta.3 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT | MIT | MIT |
| Dependencies | 0 | 0 | 17 |
| Crate Size | 2KB | 2KB | 179KB |
| Features | 0 | 0 | 2 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2021 | 2024 |
| MSRV | — | — | 1.85 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •prompty leads with a health score of 62/100, but none of the options score above 80.
- •prompt-length-guard, llm-prefix-match are pre-1.0 — API may change.