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— Faster Than Ever

Your powerful backend development framework. MARS Engine is a server‑side JavaScript runtime and hosting platform built for APIs, WebSockets, and document generation.

Get Started in the Docs Quick Start Guide

Get to know MARS Engine

What is Mars Engine?

MARS Engine is a server-side JavaScript runtime and hosting platform purpose-built for APIs, WebSockets, and document generation.It lets you ship complete back‑end logic-from SQL queries to PDF reports-in a single, version‑controlled workspace that runs entirely in the browser and deploys with one click.

Hello MARS Engine Tour

Welcome to MARS Engine! This lightning-tour walks you through building and testing the classic "Hello, World!” API, while showing off a few MARS super‑powers.

Browse Features

Concepts

Request Lifecycle

How MARS Engine processes every API and WebSocket call-from start to finish.

Sessions

MARS Engine supports managing user sessions through the session() function and related helpers.

Database Transactions

MARS Engine automatically wraps every API script in a database transaction. If your code finishes without throwing, the transaction is committed.

Code Reuse

Organize logic into reusable functions and shared libraries. Keep your codebase clean and maintainable.

API Reference

Param

Retrieves a route, query, file, or form parameter from the request.

Write

Writes content to the response body in a MARS Engine handler.

Database

The db module in MARS Engine provides a robust interface for interacting with the project's local database schema.

Cryptography

Various cryptographic utilities, including hashing, HMAC and key/token generation.

HTTP Response

The response object controls how MARS Engine APIs send responses to clients.

HTTP Request

The request object in MARS Engine lets you access all incoming request data.

Filesystem

The fs helper provides functions for interacting with the file system within the MARS Engine environment.

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Build, Collaborate, and Deploy — Faster Than Ever