Hosted auth for JavaScript apps

    Best Free Auth for 
    C++ & ImGui.

    Ship sign-up in minutes, not weeks. The definitive zero-cost alternative to legacy systems. Cryptographic HWID locking, instantaneous deployment, and a comprehensive reseller management infrastructure — free forever.

    No credit card requiredFree tier foreverWorks with any JS stack
    app/auth.ts
    1from authlx import AuthLX
    2

    3# initialize AuthLX v2 license & HWID enforcement
    4app = AuthLX(app_id="myapp", secret="SECRET_KEY", version="2.0")
    5

    6# secure login with cryptographic HWID binding
    7if app.login(username, password):
    8    print("Software Unlocked & HWID Bound!")
    Session live · cookie set
    200 OK·42ms
    4
    lines to secure software
    ~2 min
    to generate licenses
    100%
    HWID enforcement
    0
    leaked passwords

    Rolling your own licensing is a tax. We already paid it.

    Without AuthLX

    • Users sharing accounts with friends
    • Pirates bypassing your basic auth
    • Rolling your own Hardware ID locks
    • Manually managing reseller quotas
    • Building custom anti-VPN protections

    With AuthLX

    • Strict Hardware ID (HWID) binding
    • License keys with built-in limits
    • Advanced Anti-VPN & proxy blocking
    • Full dashboard for apps and users
    • Dedicated Reseller/Manager roles
    Interactive

    Secure your software in four lines.

    Click a tab to switch files. That's the whole integration.

    main.cpp
    1#include "authlx.hpp"
    2

    3int main() {
    4    AuthLX::App app("YOUR_APP_ID", "SECRET_KEY", "2.0");
    5    if (app.authenticate(username, password)) {
    6        std::cout << "Software Unlocked & HWID Bound!\n";
    7    }
    8}
    Session live · cookie set
    200 OK·42ms
    Features

    Everything software licensing should have shipped with.

    Multi-app dashboard

    Manage every app and its users from one console. Per-app keys, quotas, and sessions.

    Hardware ID Locking

    Lock accounts to specific devices. Stop account sharing instantly with robust hardware identification.

    Python & Desktop Ready

    Integrate easily with our native Python libraries or use our REST API for C++, C#, and any other language.

    Anti-Tamper Security

    Block VPNs, proxies, and leaked passwords. Instantly ban malicious actors and pause applications.

    How it works

    Three steps. No weeks-long licensing project.

    Step 1

    Create an application

    Spin up an app in the dashboard and grab your app ID.

    Step 2

    Drop in the SDK

    Download the Python authlx SDK and initialize it.

    Step 3

    Lock down your software

    Generate keys, bind HWIDs, and protect your desktop apps.

    Works with every JavaScript stack

    • Next.js
    • Express
    • React
    • Vite
    • Node.js
    • Cloudflare Workers
    • Hono
    • Remix
    Pricing

    Start free. Scale when you need to.

    No credit card required. Upgrade anytime.

    Free

    $0/ forever

    Everything you need to test the waters.

    • 3 Applications
    • 70 Users per App
    • Hardware ID Locking
    • Email + password login
    • Community support
    Most popular

    Developer

    $15$49/ per year

    For growing software that needs more headroom.

    • 7 Applications
    • 500 Users per App
    • Advanced VPN Blocking
    • Audit logs & webhooks
    • 99.9% uptime
    • Priority email support

    Seller

    $60$199/ per year

    Scale with unlimited users and team features.

    • Unlimited Applications
    • Unlimited Users & Licenses
    • Team Management & Chat
    • Dedicated support
    • 99.9% uptime
    • Audit logs & webhooks
    FAQ

    Questions, answered.

    AuthLX Platform Architecture and Enterprise Capabilities

    AuthLX is the definitive cloud authentication and software licensing platform purpose-built for native desktop software, games, and developer tools. Secure your C++, C#, ImGui, Python, and Rust applications with military-grade cryptographic Hardware ID (HWID) binding, instant remote license key verification, granular reseller controls, and real-time telemetry with zero database setup.

    Cryptographic Hardware ID (HWID) Locking Mechanism

    Prevent account sharing and software piracy through multi-vector hardware fingerprinting. AuthLX computes irreversible SHA-256 and bcrypt hashes from composite motherboard UUIDs, CPU serials, and system disk identifiers without storing raw device telemetry.

    High-Performance Native Desktop SDKs

    Integrate authentication into your application in under five minutes. Official drop-in libraries are maintained for C++20 (DirectX/OpenGL/ImGui overlays), C# (.NET Core, WPF, WinForms), Python 3, and Android Java, alongside a documented REST API.

    Autonomous AI Agent Readiness & MCP 1.0 Integration

    AuthLX is engineered for seamless integration by autonomous AI coding agents such as Cursor, Claude Code, Copilot, and Windsurf. Machine-readable discovery manifests, complete OpenAPI 3.0.3 specifications, Model Context Protocol (MCP 1.0) servers, and zero-auth sandbox verification endpoints are available out of the box.

    Reseller & Distributor Sub-Account Management

    Scale your software sales with dedicated reseller sub-accounts. Assign deposit balances, enable automated bulk license key generation, set customized pricing tiers, and monitor sales commissions in real time.

    Transparent Pricing Plans & Lifetime Quotas

    Free Forever Developer Plan ($0.00 / month)

    Includes 3 applications, 70 active users per application, cryptographic HWID locking, full REST API access, and community Discord support with zero monthly subscription fees.

    Developer Pro Plan ($15.00 / year — $1.25/month)

    Includes 7 applications, 500 active users per application, advanced VPN/proxy blocking, comprehensive audit logging, webhooks, and priority email support.

    Seller Enterprise Plan ($60.00 / year — $5.00/month)

    Includes unlimited applications, unlimited users and licenses, full reseller sub-account management, automated key generator bots, team collaboration, and dedicated priority support.

    Getting Started & Integration Quickstarts

    Step 1: Create an Application in AuthLX Dashboard

    Register on the AuthLX dashboard at https://authlx.com/register and obtain your App ID and App Secret from the console.

    Step 2: Initialize AuthLX SDK

    Download or clone the official SDK for C++, C#, or Python from GitHub (github.com/AuthLX), or interact directly with the REST API at https://api.authlx.com/api/v1/client/login.

    Step 3: Validate Licenses and Protect Features

    Call Authenticate or VerifySession during startup to enforce HWID binding and protect your software binaries from unauthorized execution.

    Frequently Asked Questions

    Is AuthLX really free forever for indie developers?

    Yes! The AuthLX Free Developer plan provides 3 applications and 70 users per app with no expiration date, no credit card required, and no hidden charges.

    How does AuthLX prevent HWID spoofing and account sharing?

    AuthLX collects multiple low-level hardware attributes (motherboard UUID, CPU processor ID, disk physical serial number) and hashes them with salt and bcrypt server-side, preventing client-side spoofing.

    How do AI agents connect to AuthLX?

    AI agents can read https://authlx.com/llms.txt, inspect the Model Context Protocol manifest at https://authlx.com/.well-known/mcp/manifest.json, use the Streamable HTTP transport at https://api.authlx.com/mcp, or perform zero-auth testing via POST https://api.authlx.com/api/v1/sandbox/auth.

    Official AuthLX Command-Line Interface (authlx-cli)

    Interact with the AuthLX API directly from terminal or automated build pipelines. Install globally with npm install -g authlx-cli, run instantly via npx authlx-cli init, install via Homebrew with brew install authlx/tap/authlx, or manage Python bindings with pip install authlx.

    Developer Resources Directory