TypeScript SDK - ModelsLab

Overview

The ModelsLab TypeScript SDK provides a type-safe interface to interact with all ModelsLab APIs. It works with both Node.js and browser environments.

npm Package

View on npm

GitHub

Source code and issues

Installation

npm install modelslab

Or with yarn:

yarn add modelslab

Quick Start

Generate your first AI image in just a few lines:

import { Client, Community } from "modelslab";

const client = new Client("your-api-key");
const community = new Community(client.key);

const result = await community.textToImage({
  key: client.key,
  prompt: "A beautiful sunset over mountains, photorealistic, 8k",
  model_id: "flux",
  width: 512,
  height: 512,
  samples: 1,
  num_inference_steps: 30,
  guidance_scale: 7.5
});

if (result.status === "success") {
  console.log("Generated image:", result.output[0]);
} else if (result.status === "processing") {
  console.log("Processing, request ID:", result.id);
}

Client Configuration

Basic Setup

import { Client } from "modelslab";

// Method 1: Direct API key
const client = new Client("your-api-key");

// Method 2: Environment variable
// Reads from process.env.API_KEY when called without args
const clientFromEnv = new Client();

// Method 3: With custom settings
// new Client(apiKey, retries, timeoutSeconds)
const clientCustom = new Client("your-api-key", 5, 10);

Client Properties

console.log(client.baseUrl);       // API base URL
console.log(client.fetchRetry);    // Number of retries
console.log(client.fetchTimeout);  // Timeout in seconds

Available APIs

import { Community, Audio, Video, ImageEditing } from "modelslab";

// Create instances with your API key
const community = new Community(client.key);
const audio = new Audio(client.key);
const video = new Video(client.key);
const imageEditing = new ImageEditing(client.key);

Enterprise Mode

For enterprise/dedicated endpoints:

// Pass true as second argument for enterprise mode
const enterpriseCommunity = new Community(client.key, true);
// Uses endpoints like: https://modelslab.com/api/v1/enterprise/images/

Image Generation (Community API)

Text to Image

import { Client, Community } from "modelslab";

const client = new Client("your-api-key");
const community = new Community(client.key);

const result = await community.textToImage({
  key: client.key,
  prompt: "A cyberpunk city at night, neon lights, rain, cinematic",
  negative_prompt: "blurry, low quality, distorted",
  model_id: "flux",
  width: 1024,
  height: 1024,
  samples: 1,
  num_inference_steps: 30,
  guidance_scale: 7.5,
  seed: 12345  // Optional: for reproducible results
});

console.log("Generated image:", result.output[0]);

Image to Image

Transform existing images with a text prompt:

const result = await community.imageToImage({
  key: client.key,
  prompt: "Transform into a watercolor painting style",
  negative_prompt: "photo, realistic",
  init_image: "https://example.com/your-image.jpg",
  model_id: "flux",
  strength: 0.7,  // How much to change (0-1)
  width: 512,
  height: 512,
  num_inference_steps: 30,
  guidance_scale: 7.5
});

console.log("Transformed image:", result.output[0]);

Inpainting

Edit specific areas of an image:

const result = await community.inpainting({
  key: client.key,
  prompt: "A red sports car",
  init_image: "https://example.com/image.jpg",
  mask_image: "https://example.com/mask.png",  // White = edit, Black = keep
  model_id: "flux",
  width: 512,
  height: 512,
  num_inference_steps: 30,
  guidance_scale: 7.5
});

console.log("Inpainted image:", result.output[0]);

ControlNet

Guided generation with reference images:

const result = await community.controlnet({
  key: client.key,
  prompt: "A beautiful house, photorealistic, sunny day",
  controlnet_model: "canny",  // canny, depth, pose, etc.
  controlnet_image: "https://example.com/edges.jpg",
  controlnet_conditioning_scale: 1.0,
  model_id: "flux",
  width: 512,
  height: 512,
  num_inference_steps: 30,
  guidance_scale: 7.5
});

console.log("ControlNet result:", result.output[0]);

Audio API

Text to Audio

Generate audio from text descriptions:

import { Client, Audio } from "modelslab";

const client = new Client("your-api-key");
const audio = new Audio(client.key);

const result = await audio.textToAudio({
  key: client.key,
  prompt: "A calm piano melody with soft strings in the background",
  duration: 30  // Duration in seconds
});

console.log("Audio URL:", result.output[0]);

Text to Speech

Convert text to natural speech:

const result = await audio.textToSpeech({
  key: client.key,
  text: "Hello! Welcome to ModelsLab. This is a sample of our text-to-speech API.",
  voice_id: "alloy",  // Choose from available voices
  language: "en"
});

console.log("Speech URL:", result.output[0]);

Voice to Voice (Voice Cloning)

Clone a voice from a reference audio:

const result = await audio.voice2voice({
  key: client.key,
  init_audio: "https://example.com/source-speech.mp3",
  target_audio: "https://example.com/voice-to-clone.mp3"
});

console.log("Cloned voice URL:", result.output[0]);

Voice Cover

Create AI covers with different voices:

const result = await audio.voiceCover({
  key: client.key,
  init_audio: "https://example.com/song.mp3",
  voice_id: "celebrity-voice-id"
});

console.log("Voice cover URL:", result.output[0]);

Music Generation

Generate music from text prompts:

const result = await audio.musicGen({
  key: client.key,
  prompt: "Upbeat electronic dance music with heavy bass drops and synth melodies",
  duration: 30
});

console.log("Generated music:", result.output[0]);

Lyrics Generation

Generate song lyrics:

const result = await audio.lyricsGen({
  key: client.key,
  prompt: "Write lyrics for a pop song about summer love and road trips"
});

console.log("Generated lyrics:", result.output);

Song Generation

Generate complete songs with vocals:

const result = await audio.songGenerator({
  key: client.key,
  prompt: "A country ballad about hometown memories",
  lyrics: "Optional: your custom lyrics here"
});

console.log("Generated song:", result.output[0]);

Speech to Text

Transcribe audio to text:

const result = await audio.speechToText({
  key: client.key,
  audio: "https://example.com/speech.mp3",
  language: "en"
});

console.log("Transcription:", result.text);

Sound Effects (SFX)

Generate sound effects:

const result = await audio.sfxGen({
  key: client.key,
  prompt: "Thunder rolling in the distance with heavy rain on a metal roof",
  duration: 10
});

console.log("Sound effect URL:", result.output[0]);

Video API

Text to Video

Generate videos from text descriptions:

import { Client, Video } from "modelslab";

const client = new Client("your-api-key");
const video = new Video(client.key);

const result = await video.textToVideo({
  key: client.key,
  model_id: "cogvideox",
  prompt: "A spaceship flying through an asteroid field, cinematic, 4K",
  negative_prompt: "low quality, blurry, static",
  width: 512,
  height: 512,
  num_frames: 25,
  num_inference_steps: 20,
  guidance_scale: 7
});

// Video generation is async
if (result.status === "processing") {
  console.log("Processing, request ID:", result.id);
  console.log("ETA:", result.eta, "seconds");
} else if (result.status === "success") {
  console.log("Video URL:", result.output[0]);
}

Image to Video

Animate a static image:

const result = await video.imageToVideo({
  key: client.key,
  model_id: "cogvideox",
  init_image: "https://example.com/landscape.jpg",
  prompt: "Clouds moving slowly, birds flying in the distance",
  num_frames: 25,
  num_inference_steps: 20,
  guidance_scale: 7
});

console.log("Result:", result);

Image Editing API

Background Removal

import { Client, ImageEditing } from "modelslab";

const client = new Client("your-api-key");
const imageEditing = new ImageEditing(client.key);

const result = await imageEditing.backgroundRemover({
  key: client.key,
  image: "https://example.com/photo.jpg"
});

console.log("Image without background:", result.output[0]);

Super Resolution (Upscale)

const result = await imageEditing.superResolution({
  key: client.key,
  image: "https://example.com/low-res-image.jpg",
  scale: 4  // 2x or 4x upscale
});

console.log("Upscaled image:", result.output[0]);

Outpainting (Extend Images)

const result = await imageEditing.outpainting({
  key: client.key,
  image: "https://example.com/photo.jpg",
  prompt: "Continue the landscape with mountains and trees",
  width: 1024,  // New width (larger than original)
  height: 768   // New height
});

console.log("Extended image:", result.output[0]);

Object Removal

const result = await imageEditing.objectRemover({
  key: client.key,
  image: "https://example.com/photo.jpg",
  mask_image: "https://example.com/mask.png"  // White areas will be removed
});

console.log("Object removed:", result.output[0]);

Fashion / Virtual Try-On

const result = await imageEditing.fashion({
  key: client.key,
  model_image: "https://example.com/person.jpg",
  cloth_image: "https://example.com/shirt.jpg"
});

console.log("Virtual try-on result:", result.output[0]);

Face Generation

const result = await imageEditing.facegen({
  key: client.key,
  image: "https://example.com/portrait.jpg",
  prompt: "Make the person look 10 years younger"
});

console.log("Face generation result:", result.output[0]);

Inpainting

const result = await imageEditing.inpainting({
  key: client.key,
  image: "https://example.com/photo.jpg",
  mask_image: "https://example.com/mask.png",
  prompt: "A beautiful garden with flowers"
});

console.log("Inpainting result:", result.output[0]);

AI Headshots

// Standard headshot
const result = await imageEditing.headshot({
  key: client.key,
  image: "https://example.com/selfie.jpg",
  prompt: "Professional headshot, studio lighting, business attire"
});

console.log("Headshot:", result.output[0]);

// FLUX-powered headshot (higher quality)
const fluxResult = await imageEditing.fluxHeadshot({
  key: client.key,
  image: "https://example.com/selfie.jpg",
  prompt: "Professional LinkedIn headshot, neutral background"
});

console.log("FLUX Headshot:", fluxResult.output[0]);

Error Handling

Always handle potential errors in production:

import { Client, Community } from "modelslab";

async function generateImage(prompt, apiKey) {
  try {
    const client = new Client(apiKey);
    const community = new Community(client.key);

    const result = await community.textToImage({
      key: client.key,
      prompt: prompt,
      model_id: "flux",
      width: 512,
      height: 512,
      samples: 1
    });

    if (result.status === "success") {
      return result.output[0];
    } else if (result.status === "processing") {
      return { requestId: result.id, eta: result.eta };
    } else {
      throw new Error(result.message || "Unknown error");
    }
  } catch (error) {
    console.error("Error generating image:", error.message);
    throw error;
  }
}

// Usage
try {
  const imageUrl = await generateImage("A sunset over mountains", "your-api-key");
  console.log("Generated:", imageUrl);
} catch (error) {
  console.error("Failed:", error.message);
}

Async Processing Pattern

For long-running operations, poll for results:

async function generateVideoWithPolling(prompt, apiKey, timeout = 300000) {
  const client = new Client(apiKey);
  const video = new Video(client.key);

  const result = await video.textToVideo({
    key: client.key,
    model_id: "cogvideox",
    prompt: prompt,
    width: 512,
    height: 512,
    num_frames: 25
  });

  if (result.status === "success") {
    return result.output[0];
  }

  if (result.status !== "processing") {
    throw new Error(result.message || "Generation failed");
  }

  const requestId = result.id;
  const startTime = Date.now();

  while (Date.now() - startTime < timeout) {
    // Poll the fetch endpoint
    await new Promise(resolve => setTimeout(resolve, 5000));

    // Check status using fetch endpoint
    // If complete, return URL
    // If failed, throw error
  }

  throw new Error("Timeout waiting for video generation");
}

Next Steps

API Reference

Explore all API endpoints

Models

Browse available models

Webhooks

Set up async notifications

Error Codes

Handle errors properly

Get Started

MCP Web API

Agents API (Control Plane)

Client SDKs

Guides

​Overview

npm Package

GitHub

​Installation

​Quick Start

​Client Configuration

​Basic Setup

​Client Properties

​Available APIs

​Enterprise Mode

​Image Generation (Community API)

​Text to Image

​Image to Image

​Inpainting

​ControlNet

​Audio API

​Text to Audio

​Text to Speech

​Voice to Voice (Voice Cloning)

​Voice Cover

​Music Generation

​Lyrics Generation

​Song Generation

​Speech to Text

​Sound Effects (SFX)

​Video API

​Text to Video

​Image to Video

​Image Editing API

​Background Removal

​Super Resolution (Upscale)

​Outpainting (Extend Images)

​Object Removal

​Fashion / Virtual Try-On

​Face Generation

​Inpainting

​AI Headshots

​Error Handling

​Async Processing Pattern

​Next Steps

API Reference

Models

Webhooks

Error Codes

Overview

Installation

Quick Start

Client Configuration

Basic Setup

Client Properties

Available APIs

Enterprise Mode

Image Generation (Community API)

Text to Image

Image to Image

Inpainting

ControlNet

Audio API

Text to Audio

Text to Speech

Voice to Voice (Voice Cloning)

Voice Cover

Music Generation

Lyrics Generation

Song Generation

Speech to Text

Sound Effects (SFX)

Video API

Text to Video

Image to Video

Image Editing API

Background Removal

Super Resolution (Upscale)

Outpainting (Extend Images)

Object Removal

Fashion / Virtual Try-On

Face Generation

Inpainting

AI Headshots

Error Handling

Async Processing Pattern

Next Steps