capnp
v0.25.4 Growingruntime library for Cap'n Proto data encoding
Quick Verdict
- ✓Actively maintained (updated 44d ago)
- !Pre-1.0: API may have breaking changes
- ✓Massive adoption (1.5K crates depend on it)
- ✓Tiny footprint (151KB, 3 deps)
- ✓Permissive license (MIT)
Security
Deep Insights
435.9K downloads in the last 30 days, down 32% from the previous period. May indicate migration to alternatives.
1.5K crates depend on capnp. Strong ecosystem adoption means battle-tested code and long-term stability.
capnp has only 1 owner despite 1.5K dependents. This is a bus-factor concern — consider the implications for long-term support.
Despite being 11+ years old, capnp hasn't reached 1.0 yet. Expect potential API changes between versions.
Only 3 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.
Notable dependents include capnpc, capnp-futures, capnp-rpc, rustfbp, sequoia-ipc. When high-quality crates choose capnp, it's a strong quality signal.
Health Breakdown
Recency, release consistency, active ratio
Yanked ratio, deps, size, maturity, features
Reverse deps, ownership, ecosystem
Downloads, momentum, growth trend
Docs, repo, license, metadata
Download Trend
Top Dependents
Most downloaded crates that depend on capnp
Version Adoption
Release Timeline
Feature Flags
default =["std", "alloc"]
