Speakeasy OpenAPI
Radar: Initial
MIT
A Go library and CLI for parsing, validating and transforming OpenAPI, Arazzo and Overlay documents — one of the few toolchains that treats all three OpenAPI Initiative specifications as first-class.
ArazzoOpenAPI Overlay
Specifications it implements
What this tool does to each specification, in the role vocabulary. Follow a standard through to standards.apievangelist.com for what it actually specifies.
| Standard | Role | What that means |
|---|---|---|
| Arazzo | parsesalso validates, transforms |
|
| OpenAPI Overlay | transforms |
Using this from an agent
- Interfaces
clilibrary- Install
-
go
github.com/speakeasy-api/openapi - Consumes
- openapi, arazzo, openapi-overlay
- Emits
- json, yaml
- Runtime
- Runs offline Deterministic Read-only No credentials
Where it applies
Jobs this tool actually does, and the surface each one is exercised on.
Work with Arazzo or Overlay documents from Go, where almost nothing else exists.
coding-agent
Apply an Overlay to a base description programmatically as part of a pipeline.
ci-pipelinecoding-agent
- Website
- https://www.speakeasy.com
- Repository
- https://github.com/speakeasy-api/openapi
- License
- MIT — reported by the GitHub API, verified 2026-09-17
- Stars
- 276 · last commit 2026-09-14
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All tools by adoption
/tools.json,
against the tool.schema.json
schema, using the roles.json
vocabulary. Start at /llms.txt.