TypeSpec

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

TypeSpec is ranked #6 of 28 in code Generators on Inferse. It runs on Browser extension, Linux, macOS, Web, Windows. There is a free plan.

Compared on code Generators

OpenAPI support: Yestypespec.io
AsyncAPI support: Notypespec.io
Mock server: Yestypespec.io
Contract validation: Yestypespec.io

Facts

Purpose: TypeSpec is a language for designing APIs and data models, then generating schemas, API specifications, code, and documentation.typespec.io · 3 Oct 2026
Language: TypeSpec is inspired by TypeScript and is described as a lightweight language for defining API shapes.typespec.io · 3 Oct 2026
Output formats: The standard library supports OpenAPI 3.0, JSON Schema 2020-12, and Protobuf.typespec.io · 3 Oct 2026
OpenAPI workflow: TypeSpec can generate OpenAPI specifications for use with tools for API gateways, code generation, and data validation.typespec.io · 3 Oct 2026
Data validation: The JSON Schema emitter can produce schemas from shared models for validating data.typespec.io · 3 Oct 2026
Editor integrations: TypeSpec provides language support for VS Code and Visual Studio, including syntax highlighting and code completion.typespec.io · 3 Oct 2026
Extensibility: Developers can write custom emitters or add metadata with custom decorators.typespec.io · 3 Oct 2026
Installation: The CLI is available as an npm package for Node.js or as a standalone executable marked experimental; installation instructions cover macOS, Windows, and Linux.typespec.io · 3 Oct 2026
Browser playground: The official site links to a TypeSpec Playground for trying TypeSpec in a browser.typespec.io · 3 Oct 2026
Authentication modeling: The HTTP library's @useAuth decorator supports applying authentication schemes to a service namespace, sub-namespace, interface, or operation.typespec.io · 3 Oct 2026
Supported auth schemes: Documented security scheme options include HTTP authentication, API keys, OAuth2, and OpenID Connect.typespec.io · 3 Oct 2026
Publisher and support: TypeSpec is described as a Microsoft-built, community-supported project.typespec.io · 3 Oct 2026
Pricing: The official homepage and documentation pages reviewed present TypeSpec as an installable project and do not list paid plans or prices.typespec.io · 3 Oct 2026
Built-in formats: Its standard library supports OpenAPI 3.0, JSON Schema 2020-12, and Protocol Buffers (Protobuf).typespec.io · 3 Oct 2026
Editor support: TypeSpec provides extensions for Visual Studio Code and Visual Studio.typespec.io · 3 Oct 2026
VS Code features: The VS Code extension provides IntelliSense, syntax highlighting, completion, formatting, diagnostics, quick fixes, refactoring, and API documentation preview.typespec.io · 3 Oct 2026
Integrations: The VS Code extension can import TypeSpec from existing OpenAPI 3 definitions and emit code from TypeSpec.typespec.io · 3 Oct 2026
Online access: The site provides an online playground for trying TypeSpec.typespec.io · 3 Oct 2026
Telemetry: The VS Code extension collects usage data and sends it to Microsoft; the page says it respects the telemetry.telemetryLevel setting.typespec.io · 3 Oct 2026
Telemetry privacy: The VS Code extension documentation says unknown customer emitters are masked and compiler location telemetry does not store the actual compiler path.typespec.io · 3 Oct 2026
Emitter status: The emitter framework is experimental and under active development, and the documentation says only TypeScript is well supported at the time of that page.typespec.io · 3 Oct 2026
Client generation: The client emitter guide lists JavaScript, Python, Java, and C# client emitters and says they are in preview and subject to change.typespec.io · 3 Oct 2026
Maker: TypeSpec describes itself as a Microsoft-built, community-supported project.typespec.io · 3 Oct 2026