quicktype
Radar: Initial
Apache-2.0
Generates typed models in many languages from JSON Schema, sample JSON, or other inputs — including inferring a schema from example data.
JSON Schema
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 |
|---|---|---|
| JSON Schema | generates |
Produces: types |
Using this from an agent
- Interfaces
clilibraryweb-ui- Install
-
npm
quicktype - Invoke
npx quicktype --src <data.json> --lang <language> -o <Model.ts>- Consumes
- json-schema, json
- Emits
- source-code
- Runtime
- Runs offline Deterministic Writes No credentials
Where it applies
Jobs this tool actually does, and the surface each one is exercised on.
Turn an undocumented API's sample responses into types and a schema.
coding-agent
The tool for the common agent situation of having real responses and no contract at all. Inference is a starting point, not a specification — treat the output as a draft.
- Website
- https://app.quicktype.io
- Repository
- https://github.com/glideapps/quicktype
- License
- Apache-2.0 — reported by the GitHub API, verified 2026-08-11
- Stars
- 13838 · last commit 2026-08-10
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/tools.json,
against the tool.schema.json
schema, using the roles.json
vocabulary. Start at /llms.txt.