Fetch

Generates a type-safe HTTP client based on the native Fetch API from your OpenAPI spec. Each operation becomes one async function with grouped path, query, headers, and body parameters and a result keyed by status code.

This plugin provides the client runtime. Query plugins such as @kubb/plugin-react-query, @kubb/plugin-vue-query, @kubb/plugin-swr, and @kubb/plugin-mcp call the functions it generates.

Installation

bun add -d @kubb/plugin-fetch

pnpm add -D @kubb/plugin-fetch

npm install --save-dev @kubb/plugin-fetch

yarn add -D @kubb/plugin-fetch

Or run kubb add plugin-fetch to install the version the Kubb registry pins and add pluginFetch() to kubb.config.ts.

Setup

• Add @kubb/plugin-ts for the operation types. Without it, @kubb/plugin-zod with inferred: true supplies them.
• Add @kubb/plugin-zod when you set validator.
• No HTTP client package is needed.

Options worth knowing

• baseURL is prepended to every request.
• validator: 'zod' validates request and response bodies with the schemas from @kubb/plugin-zod.
• sdk generates a class-based SDK, grouped by tag or flat, instead of standalone functions. Query plugins need the standalone functions, so leave sdk unset when you use them.
• returnType: 'data' makes a call resolve to the success body instead of the full result with status, data, and error.
• throwOnErrorDefault: false returns documented error responses as values instead of throwing. A single call can still pass throwOnError.