---

name: xrift-sdk description: Guide for using the @xrift/sdk package to programmatically upload worlds and items to the XRift platform. Covers XriftClient initialization, WorldsApi, ItemsApi, file upload flows, error handling, and Node.js vs browser usage.

XRift SDK Guide

A guide for using @xrift/sdk to programmatically interact with the XRift platform API.

References

• API Reference - Full specification of XriftClient, WorldsApi, ItemsApi, error classes, and utility functions
• Code Templates - Ready-to-use code examples for Node.js and browser environments
• Type Definitions - Complete TypeScript type definitions for all SDK interfaces

Critical Rules

1. API token is always required — XriftClient must be initialized with a valid token. Never hardcode tokens; use environment variables or secure configuration.
2. File data must be FileData type — The SDK accepts ArrayBuffer | Uint8Array, not file paths or strings. The caller is responsible for reading files into binary data before passing to the SDK.
3. remotePath must be a relative path — Never use absolute paths or paths starting with /. Use paths like scene.glb or assets/texture.png.
4. Always handle errors — Wrap API calls in try/catch and handle XriftAuthError, XriftApiError, and XriftNetworkError separately.

Project Overview

What is @xrift/sdk?

@xrift/sdk is a universal TypeScript SDK for the XRift platform. It provides programmatic access to world and item APIs with integrated file upload capabilities.

Key Characteristics

• Universal: Works in both Node.js (>=18) and browser environments
• Zero dependencies: Built on native fetch API
• TypeScript first: Full type definitions included
• Dual build: ESM + CJS support
• Integrated upload: Hash calculation → signed URL retrieval → upload → completion in one call

Tech Stack

• TypeScript (strict mode)
• fetch API (no axios)
• SHA-256 hashing (node:crypto / Web Crypto API)
• ESM + CJS dual build

Installation

npm install @xrift/sdk

Quick Start

import { XriftClient, getMimeType } from '@xrift/sdk';

const client = new XriftClient({
  token: process.env.XRIFT_TOKEN!,
});

// Upload a world
const result = await client.worlds.upload(
  [
    {
      remotePath: 'scene.glb',
      data: fileData, // Uint8Array or ArrayBuffer
      size: fileData.byteLength,
      contentType: getMimeType('scene.glb'),
    },
  ],
  {
    name: 'My World',
  },
);

console.log(`Uploaded: ${result.worldId} v${result.versionNumber}`);

Upload Flow

The upload() method (on both WorldsApi and ItemsApi) executes these steps internally:

1. Determine ID — Use provided worldId/itemId or create a new resource via create()
2. Calculate content hash — SHA-256 hash of all file data + config values (first 12 hex chars)
3. Calculate total file size — Sum of all file.size values
4. Get signed upload URLs — POST to /upload-urls endpoint with metadata and file list
5. Upload files — PUT each file to its signed URL with correct Content-Type header
6. Complete upload — POST to /complete endpoint with the version ID

All these steps are handled internally by upload() and cannot be called individually.

Error Handling

import { XriftAuthError, XriftApiError, XriftNetworkError } from '@xrift/sdk';

try {
  await client.worlds.upload(files, options);
} catch (error) {
  if (error instanceof XriftAuthError) {
    // 401 - Invalid or expired token
  } else if (error instanceof XriftApiError) {
    // Other API errors (400, 403, 404, 500, etc.)
    console.error(`Status: ${error.statusCode}, Body:`, error.responseBody);
  } else if (error instanceof XriftNetworkError) {
    // Network connectivity issues
    console.error('Cause:', error.cause);
  }
}

Error Hierarchy

XriftSdkError (base)
├── XriftApiError (HTTP errors with statusCode and responseBody)
│   └── XriftAuthError (HTTP 401)
└── XriftNetworkError (connectivity errors with cause)

Node.js vs Browser

Aspect	Node.js	Browser
File reading	fs.readFile() → Uint8Array	File.arrayBuffer() → Uint8Array
Hash algorithm	node:crypto (createHash)	crypto.subtle.digest (Web Crypto API)
Token storage	Environment variables	Secure storage (not localStorage)
Minimum version	Node.js 18+	Modern browsers with fetch + Web Crypto

Related Resources

• npm: @xrift/sdk
• GitHub: WebXR-JP/xrift-sdk
• XRift Documentation