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oas3

v0.21.0 Growing

Structures and tools to parse, navigate, and validate OpenAPI v3.1.xß specifications

MIT Edition 2021 MSRV 1.81
Data structuresParsing tools #api#swagger#openapi#oas#oas3

Quick Verdict

  • Actively maintained (updated 1d ago)
  • !Pre-1.0: API may have breaking changes
  • Trusted by 350 crates
  • Permissive license (MIT)

Security

Checking security advisories...
Downloads
1.0M
Dependents
350
Releases
28
Size
38KB

Deep Insights

📊
Steady growth

85.3K downloads in the last 30 days (2.8K/day), up 2% from the previous period.

🔗
Moderate adoption

350 crates depend on oas3. Reasonable ecosystem adoption, though not yet a core dependency.

👤
Prolific maintainer

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

🔬
Pre-1.0 for over a year

Despite being 6+ years old, oas3 hasn't reached 1.0 yet. Expect potential API changes between versions.

📐
Compact crate

At 37KB, oas3 is lightweight. Small crate size correlates with focused, well-scoped functionality.

🌟
Used by top crates

Notable dependents include rmcp-openapi, roast, lueur-cli, rustyproxy, jikken. When high-quality crates choose oas3, it's a strong quality signal.

Health Breakdown

Maintenance 18/25

Recency, release consistency, active ratio

Quality 15/25

Yanked ratio, deps, size, maturity, features

Community 13/20

Reverse deps, ownership, ecosystem

Popularity 7/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads · last 90 days
3K/day avg+13%
05K10K15K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.20.0
52%
v0.16.1
27%
v0.20.1
12%
v0.19.0
7%
v0.12.1
3%

Release Timeline

28 releasessince 2019
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2019
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2020
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2021
2022
2023
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2024
12
2025
10
2026
1
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Feature Flags

yaml-spec

README

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Maintainers

Dependencies
14
direct dependencies
Dependents
350
crates depend on oas3

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