Node.js SDK

Installation

$
npm install --save multion
$
# or
$
yarn add multion

In Deno (1.25+) you can import by doing:

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import { MultiOnClient } from "npm:multion";

Usage

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import { MultiOnClient, MultiOn } from 'multion';
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const multion = new MultiOnClient({
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  apiKey: "YOUR_API_KEY", // Defaults to process.env.MULTION_API_KEY
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});
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const response = await multion.browse({
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  cmd: "what is the weather today?",
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  url: "https://www.google.com"
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})

Request and Response Types

The SDK exports all request and response types as TypeScript interfaces. Simply import them under the MultiOn namespace:

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import { MultiOn } from "multion"; 
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const message: MultiOn.Message = {
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  url: "https://www.google.com",
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  includeScreenshot: true,
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}

Exception Handling

When the API returns a non-success status code (4xx or 5xx response), a subclass of MultiOnError will be thrown:

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import { MultiOnError } from 'multion';
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try {
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  await multion.browse(...);
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} catch (err) {
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  if (err instanceof MultiOnError) {
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    console.log(err.statusCode); 
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    console.log(err.message);
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    console.log(err.body); 
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  }
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}

Advanced

Retries

The MultiOn Node SDK is instrumented with automatic retries with exponential backoff. A request will be retried as long as the request is deemed retriable and the number of retry attempts has not grown larger than the configured retry limit (default: 2).

A request is deemed retriable when any of the following HTTP status codes is returned:

• 408 (Timeout)
• 429 (Too Many Requests)
• 5XX (Internal Server Errors)

Use the maxRetries request option to configure this behavior.

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const response = multion.browse({ url: "https://google.com" }, {
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  maxRetries: 0 // override maxRetries at the request level
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});

Timeouts

The SDK defaults to a 60 second timout. Use the timeoutInSeconds option to configure this behavior.

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const response = multion.browse({ url: "https://google.com" }, {
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  timeoutInSeconds: 30 // override timeout to 30s
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});

Custom HTTP client

The SDK provides a way for you to customize the underlying HTTP client / Fetch function. If you’re running in an unsupported environment, this provides a way for you to break the glass and ensure the SDK works.

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import { MultiOnClient } from 'multion';
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const multion = new MultiOnClient({
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  apiKey: "...",
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  fetcher: // provide your implementation here
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});

Runtime compatiblity

The SDK defaults to node-fetch but will use the global fetch client if present. The SDK works in the following runtimes:

The following runtimes are supported:

• Node.js 18+
• Vercel
• Cloudflare Workers
• Deno v1.25+
• Bun 1.0+