rustio rustio.net
58

contracts

v0.6.7 Growing

Design-by-contract attributes

MPL-2.0 Edition 2018 MSRV 1.65
Development toolsDevelopment tools::Procedural macro helpers #verification#invariant#design-by-contract#precondition#postcondition

Quick Verdict

  • !Pre-1.0: API may have breaking changes
  • โœ“Trusted by 716 crates
  • โœ“Tiny footprint (31KB, 3 deps)

Security

Checking security advisories...
Downloads
1.1M
Dependents
716
Releases
18
Size
31KB

Deep Insights

๐Ÿ“Š
Steady growth

54.3K downloads in the last 30 days (1.8K/day), up 15% from the previous period.

๐Ÿ”—
Moderate adoption

716 crates depend on contracts. Reasonable ecosystem adoption, though not yet a core dependency.

๐Ÿ‘ค
Prolific maintainer

The primary maintainer publishes 54 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 6+ years old, contracts hasn't reached 1.0 yet. Expect potential API changes between versions.

๐Ÿชถ
Minimal dependencies

Only 3 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

๐Ÿ“
Compact crate

At 31KB, contracts is lightweight. Small crate size correlates with focused, well-scoped functionality.

๐ŸŒŸ
Used by top crates

Notable dependents include tendermint-light-client, mise, slitter, rnp, oas_gen. When high-quality crates choose contracts, it's a strong quality signal.

Health Breakdown

Maintenance 9/25

Recency, release consistency, active ratio

Quality 17/25

Yanked ratio, deps, size, maturity, features

Community 14/20

Reverse deps, ownership, ecosystem

Popularity 7/15

Downloads, momentum, growth trend

Documentation 11/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
2K/day avg+53%
01K2K3K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.6.3
59%
v0.4.0
23%
v0.6.6
10%
v0.6.7
7%
v0.6.0
1%

Release Timeline

18 releasessince 2019
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2019
6
2020
5
2021
2
2022
1
2023
2024
2025
4
2026
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Feature Flags

override_logoverride_debugmirai_assertionsdisable_contracts

README

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Maintainers

Dependencies
3
direct dependencies
Dependents
716
crates depend on contracts

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