Zodios: Build an Axios Type-Safe Client from Zod Endpoint Definitions
Zodios uses a central Zod endpoint definition for Axios client types, runtime validation, and aliases, with optional Express and OpenAPI packages.
Zodios uses a central Zod endpoint definition for Axios client types, runtime validation, and aliases, with optional Express and OpenAPI packages.
Zod's 224M weekly downloads (checked August 2026) put it far beyond 'form validation library': API boundaries, environment variables, route search params, LLM tool schemas and structured output all run on the same schemas. The core mechanism is one definition, two payoffs — runtime validation and static types derived from a single source. Zod 4 (on npm July 2025) is faster, slimmer, and easier on tsc.
React Hook Form handles form performance, Zod defines the validation schema — together they eliminate nearly all form boilerplate. Share a single Zod schema across a monorepo and you get one source of truth for both frontend and backend validation.
TypeScript types only exist at compile time — they vanish at runtime. Zod lets you validate external data at runtime while inferring TypeScript types from the same schema. One definition, two jobs done.