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Tech riderRev. 30 Sept 2026

quicktype

Ch 027.6of 33 Code Generators
  1. 1Runs onAPI, Linux, Mac, Web, Windows
  2. 2CostsFree plan · paid from $19/mo
  3. 3Project scaffoldingNo
  4. 4Schema-to-code generationYes
  5. 5CLI availableYes
  6. 6IDE pluginsYes
  7. 7Supported languagesC, 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, Zod
7 lines stated Written from the maker's own pages: quicktype.io, next.quicktype.io
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The quicktype homepage

Overview

quicktype infers types from structured data and generates models, serializers and validators in more than 25 languages. Inputs include sample JSON, API URLs, JSON Schema, TypeScript and GraphQL queries. It can infer nullability, optional fields, numeric types, dates, UUIDs, enums, unions, maps and nested type names, then generate code to read, write and validate data. The browser app lets users paste JSON and produce code; the project says it works offline and does not send sample data over the Internet. The CLI can process files, URLs, directories of samples or standard input, including in build pipelines, CI jobs and git hooks. A hosted MCP endpoint connects quicktype to Claude Code, Cursor, Codex or other MCP clients without an API key. The project is open source under Apache-2.0, and its web app and CLI are free. The CLI and Node.js packages require Node.js 20 or newer. Platforms listed include web, Linux, macOS, Windows and API. The project directs users to a Slack community for help and discussion. It describes generated types as a way for teams to build API clients, catch API changes and give IDEs and AI agents a typed model of data.

Who it is for

quicktype suits developers and teams working with JSON or other supported structured inputs who need generated types and related code. Its CLI and browser app offer different ways to generate output, with the Node.js version requirement applying to CLI and Node.js packages.

What is good

  • Generates models, serializers and validators.
  • Supports more than 25 languages.
  • Browser app works offline without sending sample data.
  • Hosted MCP endpoint requires no API key.

What to know first

  • CLI and Node.js packages require Node.js 20 or newer.
  • Project scaffolding is not available.
  • Paid language plans are listed annually.

Verdict

quicktype offers browser-based and command-line generation, with an open-source free web app and CLI. Check the Node.js requirement for CLI use and whether its listed target-language plans fit your needs.

quicktype plans and pricing

All plans
FREE Free Web app + CLI · Community Slack · Apache2 license next.quicktype.io · 30 Sept 2026
1 target language $19/mo Billed annually Email support · 30 min. technical planning next.quicktype.io · 30 Sept 2026
2 target languages $129/mo Chat support · 7-day hotfixes · 2 hr. technical planning next.quicktype.io · 30 Sept 2026

Compared 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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