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Top 5 Rust Openapi3 Projects
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cherrybomb
Stop half-done APIs! Cherrybomb is a CLI tool that helps you avoid undefined user behaviour by auditing your API specifications, validating them and running API security tests.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
- Project mention: Terminal UI to list, browse and run APIs defined with OpenAPI spec | news.ycombinator.com | 2025-01-06
- Project mention: Show HN: Mixing Deterministic Codegen with LLM Codegen for Client SDKs | news.ycombinator.com | 2025-08-26
Hi HN, I’m Patrick. Elias, Kevin, and I are building Sideko (https://sideko.dev), a new type of code generator for building and maintaining API client SDKs from OpenAPI specs.
Our approach differs significantly from traditional SDK generators in that we use structured pattern matching queries to create and update the code. Other SDK generators use templates, which overwrite custom changes and produce code that looks machine generated.
We’ve mixed in LLM codegen by creating this workflow: Run deterministic codegen to establish the SDK structure. Let LLMs enhance specific components where adaptability adds value and include agent rules files that enforce consistency and correctness with type checking and integration tests against mock servers. The system will retain the LLM edits, while the rest of the SDK is automatically maintained by the deterministic generator (keeping it in sync with the API). LLMs can edit most the files (see python rules and typescript rules).
You can try it out from your terminal:
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).
Rust Openapi3 discussion
Rust Openapi3 related posts
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Show HN: Mixing Deterministic Codegen with LLM Codegen for Client SDKs
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Type safe web stack with Rust and TypeScript
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Announcing utoipa 3.0.0, one year anniversary release - Compile time OpenAPI library for Rust
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New Tokio blog post: Announcing axum 0.6.0
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Book Review: Zero To Production In Rust
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Web frameworks with integrated Open API?
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Announcing utoipa 2.0.0, long awaited release - Compile time OpenAPI + Swagger UI
- A note from our sponsor - SaaSHub www.saashub.com | 24 Dec 2025
Index
What are some of the best open-source Openapi3 projects in Rust? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | cherrybomb | 1,220 |
| 2 | openapi-tui | 989 |
| 3 | sideko | 88 |
| 4 | oal | 37 |
| 5 | oaph | 3 |
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