quicktype
No phone app
in Code Generators
- Recognised40% of the score20
- Phone app26% of the score0
- Documented20% of the score100
- Free plan14% of the score100
- Free plan
- Yes
- Paid plans from
- $19/mo
- Runs on
- api, Linux, Mac, Web, Windows
Summary
quicktype converts structured input into models, serializers, and validators in more than 25 languages. It accepts sample JSON, API URLs, JSON Schema, TypeScript, and GraphQL queries, then infers details such as nullable fields, optional properties, numeric types, dates, UUIDs, enums, unions, maps, and nested type names. Generated code can read, write, and validate data. The browser app lets users paste JSON and generate code; it works offline and does not send sample data over the Internet. The CLI processes files, URLs, directories of samples, or standard input, making it usable in build pipelines, CI jobs, and git hooks. A hosted MCP endpoint connects with Claude Code, Cursor, Codex, or other MCP clients without an API key. quicktype is open source under the Apache-2.0 license, and the web app and CLI are free. The CLI and Node.js packages require Node.js 20 or newer. It is available on web, Linux, macOS, and Windows.
Who it is for
It suits developers who need typed models and related code from structured data, including teams building API clients or tracking API changes. The CLI and Node.js packages require Node.js 20 or newer.
What is good
- Generates models, serializers, and validators in over 25 languages.
- Accepts JSON, API URLs, schemas, TypeScript, and GraphQL.
- The browser app works offline without sending sample data.
- CLI supports files, URLs, directories, and standard input.
- Open source under the Apache-2.0 license.
What to know first
- CLI and Node.js packages require Node.js 20 or newer.
- Project scaffolding is not available.
Verdict
quicktype offers browser and command-line workflows for translating structured data into typed code. Its free, open-source availability and broad input options make it suitable for developers who need generated models, serialization, or validation.
quicktype plans and pricing
All plansCompared on code generators
- Free plan
- Yesquicktype.io
- Project scaffolding
- Noquicktype.io
- Schema-to-code generation
- Yesquicktype.io
- CLI available
- Yesquicktype.io
- IDE plugins
- Yesquicktype.io
- Supported languages
- C, C#, C++, Crystal, Dart, Effect Schema, Elixir, Elm, Flow, Go, GraphQL, Haskell, Java, JavaScript, JSON Schema, Kotlin, Objective-C, PHP, Pike, Python, Ruby, Rust, Scala, Smithy, Swift, TypeScript, Zodquicktype.io
Facts
- Purpose
- quicktype infers types from JSON and generates models, serializers, and validators in more than 25 languages.quicktype.io · 30 Sept 2026
- Inputs
- It accepts sample JSON, API URLs, JSON Schema, and GraphQL queries.quicktype.io · 30 Sept 2026
- Inference
- It can infer nullability, optional fields, numeric types, dates, UUIDs, enums, unions, maps, and nested type names.quicktype.io · 30 Sept 2026
- Code output
- Generated output can include serializers and runtime validation code along with types.quicktype.io · 30 Sept 2026
- Browser use
- The product offers a browser app for pasting JSON and generating code.quicktype.io · 30 Sept 2026
- CLI
- The CLI can generate code from files, URLs, or standard input and can be used in a build pipeline, CI job, or git hook.quicktype.io · 30 Sept 2026
- MCP integration
- A hosted MCP endpoint connects quicktype to Claude Code, Cursor, Codex, or any MCP client without an API key.quicktype.io · 30 Sept 2026
- MCP endpoint
- The MCP server URL is https://mcp.quicktype.io/mcp.mcp.quicktype.io · 30 Sept 2026
- Open source
- The GitHub repository identifies quicktype as open source under the Apache-2.0 license.github.com · 30 Sept 2026
- Offline and privacy
- The GitHub README says the web app works offline and does not send sample data over the Internet.github.com · 30 Sept 2026
- CLI requirement
- The CLI and Node.js packages require Node.js 20 or newer.github.com · 30 Sept 2026
- Who it serves
- The site describes using generated types to help teams build API clients, catch API changes, and give IDEs and AI agents a typed model of data.quicktype.io · 30 Sept 2026
- What it does
- quicktype infers types from JSON and generates models, serializers, and validators in more than 25 languages.quicktype.io · 30 Sept 2026
- Supported inputs
- quicktype accepts sample JSON, API URLs, JSON Schema, TypeScript, and GraphQL queries.github.com · 30 Sept 2026
- Inference capabilities
- quicktype detects enums, dates, UUIDs, numeric types, nullable properties, unions, maps, and equivalent structures.quicktype.io · 30 Sept 2026
- Generated serialization
- quicktype generates code to read, write, and validate data in the target language.quicktype.io · 30 Sept 2026
- Command line
- The CLI can generate code from files, URLs, directories of samples, or standard input.quicktype.io · 30 Sept 2026
- Browser privacy
- The web app works offline and does not send sample data over the Internet.github.com · 30 Sept 2026
- Runtime requirement
- The quicktype CLI and Node.js packages require Node.js 20 or newer.github.com · 30 Sept 2026
- Community support
- The project directs users to a quicktype Slack community for help and discussion.github.com · 30 Sept 2026
- Usage scale
- The official site says millions of developers have generated billions of lines of code with quicktype.quicktype.io · 30 Sept 2026
- Contributors
- The official site says more than 200 contributors have contributed to the open source project.quicktype.io · 30 Sept 2026
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Where it ranks on Samsung Mobile US Press
- Best Code Generators in 2026#3 of 33
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Sources
- quicktype.io· checked 30 Sept 2026
- mcp.quicktype.io· checked 30 Sept 2026
- github.com/glideapps/quicktype· checked 30 Sept 2026
- next.quicktype.io· checked 30 Sept 2026