devup API

A fully typed API client generator powered by OpenAPI.
Fetch-compatible, auto-generated types, zero generics required.

devup API reads your openapi.json file and automatically generates a fully typed client that behaves like an ergonomic, type-safe version of fetch().
No manual type declarations. No generics. No SDK boilerplate.
Just write API calls — the types are already there.

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✨ Features

🔍 OpenAPI-driven type generation

• Reads openapi.json and transforms every path, method, schema into typed API functions.
• Parameters, request bodies, headers, responses — all typed automatically.
• No need to write or maintain separate TypeScript definitions.

🪝 Fetch-compatible design

devup API feels like using fetch, but with superpowers:

• Path params automatically replaced
• Query/body/header types enforced
• Typed success & error responses
• Optional runtime schema validation
• Minimal abstraction over standard fetch

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🚀 Quick Start

1. Initialize the client

import { devupApi } from "devup-api";

// create api instance
const api = devupApi("https://api.example.com");

2. Call endpoints — types are automatic

const user = await api.get("/users/{id}", {
  params: { id: "123" },
  headers: {
    Authorization: "Bearer TOKEN"
  }
});

const user = await api.get("getUser", {
  params: { id: "123" },
  headers: {
    Authorization: "Bearer TOKEN"
  }
});

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📦 Installation

npm install @devup-api/fetch

npm install @devup-api/next-plugin
npm install @devup-api/webpack-plugin
npm install @devup-api/rsbuild-plugin
npm install @devup-api/vite-plugin

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📚 API Usage

GET Example

await api.get("/posts", {
  query: { page: 1, limit: 20 }
});

POST Example

await api.post("/posts", {
  body: {
    title: "Hello World",
    content: "This is a typed API request."
  }
});

Path Params Example

await api.get("/posts/{id}", {
  params: { id: "777" }
});

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⚙️ How It Works

1. Download openapi.json
2. Extract paths, methods, schemas, parameters, bodies
3. Generate TypeScript types automatically
4. Build a typed wrapper around fetch()
5. Expose methods based on the API structure

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🎯 Why devup API?

• No code generators
• No build steps
• No boilerplate
• Uses OpenAPI schema directly
• Works in Next.js, Bun, Vite, rsbuild

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🛠️ Roadmap

• Typescript interface generation
• Zod schema generation

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📄 License

Apache 2.0