ZeroTrue Node.js SDK

Official Node.js SDK for ZeroTrue AI Detection API - Detect AI-generated content in text, images, videos, and audio.

Features

• Full TypeScript support with comprehensive type definitions
• JavaScript support with JSDoc for IntelliSense
• Promise-based API for modern async/await syntax
• Automatic retry on failures with exponential backoff
• Rate limit handling with smart backoff
• Idempotency support for safe retries
• File upload support (Buffer, file path)
• Auto-polling for check results
• CommonJS & ESM support
• Minimal dependencies (only axios and form-data)

Installation

npm install @zerotrue/sdk-node

yarn add @zerotrue/sdk-node

pnpm add @zerotrue/sdk-node

Quick Start

TypeScript

import ZeroTrue from '@zerotrue/sdk-node';

const client = new ZeroTrue({
  apiKey: process.env.ZEROTRUE_API_KEY!,
});

// Check text for AI generation
const result = await client.checks.createAndWait({
  input: { type: 'text', value: 'Check this text...' },
});

console.log('AI Probability:', result.ai_probability + '%');
console.log('Result:', result.result_type);

JavaScript (CommonJS)

// Default import
const ZeroTrue = require('@zerotrue/sdk-node').default;

// Or destructured
const { ZeroTrue } = require('@zerotrue/sdk-node');

const client = new ZeroTrue({
  apiKey: process.env.ZEROTRUE_API_KEY,
});

// Check text for AI generation
const result = await client.checks.createAndWait({
  input: { type: 'text', value: 'Check this text...' },
});

console.log('AI Probability:', result.ai_probability + '%');

Usage

Initialize Client

const client = new ZeroTrue({
  apiKey: 'zt_your_api_key_here',
  baseURL: 'https://app.zerotrue.app', // optional
  timeout: 30000, // 30 seconds (optional)
  maxRetries: 3, // retry failed requests (optional)
  retryDelay: 1000, // 1 second between retries (optional)
  debug: false, // enable debug logging (optional)
});

Check Text

const check = await client.checks.create({
  input: {
    type: 'text',
    value: 'Your text to analyze...',
  },
  isPrivateScan: true, // default
  isDeepScan: false, // default
});

// Get result
const result = await client.checks.retrieve(check.id);

// Or wait for completion
const result = await client.checks.wait(check.id);

Check URL

const check = await client.checks.create({
  input: {
    type: 'url',
    value: 'https://example.com/image.png',
  },
});

Check File

From file path

const check = await client.checks.createFromFile('./image.png', {
  isPrivateScan: true,
  isDeepScan: false,
});

From Buffer

import * as fs from 'fs';

const buffer = fs.readFileSync('./image.png');
const check = await client.checks.createFromBuffer(buffer, 'image.png');

Wait for Result

// Simple wait
const result = await client.checks.wait(checkId);

// With custom options
const result = await client.checks.wait(checkId, {
  pollInterval: 2000, // 2 seconds (default)
  maxPollTime: 300000, // 5 minutes (default)
  signal: abortController.signal, // for cancellation
});

Create and Wait (One-liner)

const result = await client.checks.createAndWait({
  input: { type: 'text', value: 'Check this...' },
});

console.log('AI Probability:', result.ai_probability);

Idempotency

const check = await client.checks.create({
  input: { type: 'text', value: 'Test' },
  idempotencyKey: 'unique-request-id-123', // Reusing same key returns cached response
});

Error Handling

import {
  ValidationError,
  AuthenticationError,
  RateLimitError,
  APIError,
} from '@zerotrue/sdk-node';

try {
  const check = await client.checks.create({
    input: { type: 'text', value: 'Test' },
  });
} catch (error) {
  if (error instanceof ValidationError) {
    console.error('Validation failed:', error.message);
  } else if (error instanceof AuthenticationError) {
    console.error('Invalid API key:', error.message);
  } else if (error instanceof RateLimitError) {
    console.error('Rate limit exceeded. Retry after:', error.retryAfter, 'seconds');
  } else if (error instanceof APIError) {
    console.error('API error:', error.message);
  } else {
    console.error('Unknown error:', error);
  }
}

API Reference

Client Methods

new ZeroTrue(options)

Creates a new ZeroTrue client.

Options:

• apiKey (string, required) - Your ZeroTrue API key
• baseURL (string, optional) - API base URL (default: https://app.zerotrue.app)
• timeout (number, optional) - Request timeout in ms (default: 30000)
• maxRetries (number, optional) - Max retry attempts (default: 3)
• retryDelay (number, optional) - Delay between retries in ms (default: 1000)
• debug (boolean, optional) - Enable debug logging (default: false)

Checks Resource

client.checks.create(params)

Creates a new check.

Parameters:

• input (object, required) - Input to check:
  • type (string) - 'text' or 'url'
  • value (string) - Text content or URL
• isPrivateScan (boolean, optional) - Private scan (default: true)
• isDeepScan (boolean, optional) - Deep scan (default: false)
• idempotencyKey (string, optional) - Idempotency key
• metadata (object, optional) - Additional metadata

Returns: Promise<CheckResponse>

client.checks.createFromFile(filePath, options?)

Creates a check from a file path.

Returns: Promise<CheckResponse>

client.checks.createFromBuffer(buffer, filename, options?)

Creates a check from a Buffer.

Returns: Promise<CheckResponse>

client.checks.retrieve(checkId)

Retrieves a check by ID.

Returns: Promise<CheckResult>

client.checks.wait(checkId, options?)

Waits for a check to complete.

Options:

• pollInterval (number) - Polling interval in ms (default: 2000)
• maxPollTime (number) - Max wait time in ms (default: 300000)
• signal (AbortSignal) - For cancellation

Returns: Promise<CheckResult>

client.checks.createAndWait(params, options?)

Creates a check and waits for completion.

Returns: Promise<CheckResult>

Types

CheckResponse

{
  id: string;
  status: 'queued' | 'processing' | 'completed' | 'failed' | 'canceled' | 'expired';
  created_at: string;
}

CheckResult

Extends CheckResponse with additional fields:

{
  // ... CheckResponse fields
  ai_probability?: number;
  human_probability?: number;
  combined_probability?: number;
  result_type?: string;
  ml_model?: string;
  ml_model_version?: string;
  file_url?: string;
  original_filename?: string;
  size_bytes?: number;
  size_mb?: number;
  resolution?: string;
  length?: number;
  suspected_models?: Array<{
    model_name: string;
    confidence_pct: number;
  }>;
  segments?: Array<{
    label: string;
    confidence_pct: number;
    start_char?: number;
    end_char?: number;
    start_s?: number;
    end_s?: number;
  }>;
  // ... and more
}

Rate Limits

• 60 requests per minute
• 10,000 requests per day

The SDK automatically handles rate limits with retry logic.

Supported File Formats

• Images: jpg, jpeg, png, gif, bmp, tiff, webp
• Videos: mp4, mov, avi, mkv, webm
• Audio: mp3, wav, ogg, flac
• Code: py, js, ts, html, css, java, cpp, go, json, txt

Environment Variables

# .env
ZEROTRUE_API_KEY=zt_your_api_key_here

Examples

See the examples/ directory for more examples:

• basic.ts - Basic usage
• basic.js - JavaScript version
• file-check.ts - File upload examples
• error-handling.ts - Error handling

Development

# Install dependencies
npm install

# Build
npm run build

# Run tests
npm test

# Lint
npm run lint

# Format
npm run format

License

MIT

Support

• Documentation: https://app.zerotrue.app/docs
• Issues: GitHub Issues
• Email: support@zerotrue.ai