Neuctra Authix
Neuctra Authix
HomeFeaturesPricingAboutDocs
Firebase Auth Alternative

A connected authentication and data foundation for modern applications.

Clerk Alternative

Identity and structured application data without separate backend wiring.

User Data Without a Backend

Store structured user data with identity-aware access built in.

Sign InGet Started
The Identity Native Data Foundation

Build Your Product.Not Your Backend Foundation.

Neuctra Authix gives modern applications a unified backend foundation for authentication, user identity, and structured data. Connect identity to data through developer friendly SDKs instead of rebuilding the same backend foundation for every product.

Start BuildingExplore the Docs
JavaScript & TypeScriptPythonDart & Flutter
Identity connected
Authix Identity Layer

Authentication connects directly to your data foundation

Authix Cloud
NODE 01

Your Application

Web, mobile, or frontend client

NODE 02

Authix SDK

Simple identity and data access

Connected
NODE 03

Authix Foundation

Identity, user data, and app data

Connected
Identity aware data operations
authix.ts
01const user = await authix.signIn({
02 email: "user@example.com",
03 password: "••••••••"
04});
05
06await authix.addUserData({
07 userId, dataCategory: "preferences",
08 data: { theme: "dark" }
09});
➜authix/requestready

Foundation

One identity context

Authentication

Sign up, sign in, sessions, verification, and recovery

User Identity

Authenticated operations stay connected to the user

Structured Data

Private user data and shared application data

Identity Aware

Ownership and access context follows the authenticated user

Identity aware by default
Explore the foundation
60%+
Faster Launch
0
Server Infrastructure
2
Execution Modes
1
Unified Ecosystem
Your Backend Mission

Build Your ProductMission by Mission

Start with identity, connect your application, activate your data, and choose the runtime that fits your product. Authix handles the repetitive backend foundation while you build the product itself.

Authix Mission Control

Backend foundation progress

1/6

Authentication, sessions, email verification, password recovery, and profile management become part of your application foundation.

Use the JavaScript and TypeScript, Python, or Dart and Flutter SDK depending on your application.

Once authentication succeeds, Authix has the identity context needed for subsequent user data operations.

Organize flexible JSON records into categories and work with private user data or shared application data.

Use free text search, JSON field filtering, category filtering, cursor pagination, and iteration helpers.

Keep Authix responsible for identity and data infrastructure while your custom server handles product specific logic.

Identity-Native Backend Infrastructure

Authentication, identity,
and data in one foundation.

Neuctra Authix is a backend foundation for modern applications. Connect authentication and user identity with structured data, ownership, search, and developer APIs without rebuilding the same backend infrastructure for every product.

01

Authentication & Identity

Add registration, sign-in, sessions, email verification, password recovery, and profile management without rebuilding authentication infrastructure for every application.

Complete identity foundation
02

Identity-Aware User Data

Store structured JSON data for authenticated users while keeping identity and ownership connected. Build notes, profiles, preferences, settings, saved items, and other user-specific features faster.

User-owned data
03

Built-In Data Ownership

Authix connects authenticated identity with application data so you can avoid repeatedly wiring users to records and implementing the same ownership logic across every project.

Identity → ownership → data
04

Flexible Application Data

Store shared application records such as products, content, inventory, documents, and other non-user-specific data using flexible data categories.

Application-level data
05

Search, Filtering & Pagination

Query application and user data with free-text search, JSON field filters, category filtering, and cursor-based pagination designed for scalable data access.

Built-in data APIs
06

Secure Developer Access

Use API keys for client applications and API keys for trusted servers, with typed SDK errors and permission boundaries built into the Authix architecture.

Client + server security

Build your product, not the same backend foundation again. Authix handles the connection between authentication, identity, ownership, and application data so your team can focus on the product-specific logic that makes your application unique.

Built for real products

Build More Than Authentication

Neuctra Authix gives your application an identity-aware backend foundation for authentication, user data, and structured application data. Use it for MVPs, SaaS products, AI applications, e-commerce, internal tools, and custom backend architectures.

MVPs & Startups

Launch faster with authentication, user accounts, sessions, and structured application data already connected. Focus your backend effort on the product features that make your startup different.

MVP backend, startup backend, authentication

E-Commerce Platforms

Build customer accounts, product data, orders, wishlists, and other application records without repeatedly wiring authentication to your database.

e-commerce backend, user accounts, product data

SaaS & Dashboards

Create SaaS applications, admin panels, analytics dashboards, and customer portals with identity-aware user data and application data from the start.

SaaS backend, dashboards, customer portals

AI Products

Give AI applications a persistent identity and data layer for users, preferences, conversations, configurations, and application-specific records.

AI backend, AI applications, user data

Internal Tools & Business Apps

Build CRM systems, booking tools, learning platforms, internal dashboards, and business software without rebuilding authentication and data access foundations.

internal tools, business applications, CRM backend

Custom Backend Architectures

Keep your own Express or Node.js backend for business logic while Authix handles identity and structured data infrastructure as your application grows.

custom backend, Node.js backend, backend infrastructure

Start with Authix Cloud for a fast path to production, or integrate Authix into your own backend when your application needs custom business logic, AI services, payments, background jobs, or external APIs.

Choose Your Authix Architecture

One Identity Native Foundation.Two Ways to Build.

Build faster with Neuctra Authix. Start with Authix Cloud for direct SDK based development, or connect Authix to your own backend when your application needs more control.

Cloud Mode

Start directly with Authix Cloud

Connect your web or mobile application to Neuctra Authix through the SDK. Authix provides authentication, sessions, identity aware user data, application data, search, pagination, and permissions without requiring you to build the backend foundation from scratch.

Same foundation. Move from Cloud Mode to Embedded Server Mode as your architecture evolves.

Architecture Route

Frontend → Authix SDK → Authix Cloud

Active Route
MISSION 01

Your Application

Next.js, React, Vue, mobile, or another client

Complete
MISSION 02

Authix SDK

Simple SDK based access to identity and data

In Progress
MISSION 03

Authix Cloud

Authentication, identity, and structured data

Complete
Foundation Capabilities
AuthenticationUser IdentityPrivate User DataApplication DataSearch & Pagination
MVP development
SaaS applications
Dashboards and internal tools
Fast product launches

Neuctra Authix is an identity native backend foundation for modern applications. It combines authentication, user identity management, private user data, application data, search, and structured data access through developer friendly SDKs. Start with Authix Cloud for a simple architecture, then connect Authix to your own backend when you need custom APIs, business logic, AI services, payments, caching, or background jobs.

Identity Native Backend Foundation

Everything Your Application NeedsFrom Identity to Data

Neuctra Authix combines authentication, user identity, structured data, ownership context, search, pagination, and backend data operations into one foundation for modern applications.

Authentication & Identity

A complete identity foundation for applications that need authenticated users.

  • User registration and sign in
  • Cookie based session management
  • Email verification with OTP
  • Password reset and account recovery
  • Password changes and profile management

Identity Aware Data

Connect authenticated identity with structured application data.

  • Private user data
  • Flexible JSON data categories
  • Application level shared data
  • Identity aware data access
  • User ownership context

Data Operations

Use one data layer for common application data operations.

  • Create, read, update, and delete operations
  • Free text search
  • JSON field filtering
  • Category filtering
  • Cursor based pagination

Backend Foundation

Infrastructure for building reliable applications without repeating the basics.

  • Optimistic concurrency control
  • Atomic batch operations
  • Typed SDK errors
  • Bounded data responses
  • Iteration helpers for paginated data

Authix gives your application a connected identity and data foundation, so you can spend your backend development effort on product specific logic instead of repeatedly rebuilding common infrastructure.

Developer Experience

Build With AuthixWithout Rebuilding the Foundation

Connect your application to Authix through the SDK, authenticate users, and work with identity aware data through the same foundation.

Step 01

Install the Authix SDK

Install the JavaScript and TypeScript SDK to connect your application to Authix authentication and data capabilities.

npm
Yarn
pnpm
Shell
1npm install @neuctra/authix
2
3# or
4
5yarn add @neuctra/authix
6
7# or
8
9pnpm add @neuctra/authix
Step 02

Connect Your Application

Configure your Authix client with your application identifier and API key. The API key is designed for client applications.

Create your Authix application
Configure the client with your application credentials
Reuse the Authix client throughout your application
Ts
1import { NeuctraAuthix } from "@neuctra/authix";
2
3export const Authix = new NeuctraAuthix({
4  baseUrl: "https://server.authix.neuctra.com/api",
5  apiKey: "ak_live_xxxxxxxxx",
6  appId: "your_app_id",
7});
Step 03

Add Authentication and Identity

Use Authix authentication flows to establish a signed in identity for your application. Once the user is authenticated, Authix can associate private data operations with that identity.

Registration
Sign in
Email verification
Password recovery
Ts
1// Authentication is handled through Authix
2
3const result = await Authix.signIn({
4  email,
5  password,
6});
7
8// The authenticated identity is now
9// available to subsequent Authix operations
Step 04

Store Identity Aware Data

Store flexible JSON records in categories that match your application. Authix connects authenticated identity with private user data so you do not have to repeatedly build the same identity to data relationship.

Identity aware by design. User data can be organized into categories such as notes, preferences, saved items, or other product specific records.

Ts
1await Authix.addUserData({
2  userId: user.id,
3  dataCategory: "notes",
4  data: {
5    title: "Project idea",
6    content: "Build with Authix",
7  },
8});
Step 05

Add Search and Data Operations

Query your data using Authix search and filtering capabilities. Cursor based pagination and iteration helpers let your application work with larger collections without rebuilding the same data access layer.

Free text search
JSON field filtering
Category filtering
Cursor based pagination
Ts
1const results = await Authix.search({
2  q: "project",
3  category: "notes",
4  keys: {
5    status: "active",
6  },
7  limit: 20,
8});
9
10// Continue through pages with
11// Authix pagination and iteration helpers
Choose How You Run Authix

Start Simple. Integrate Deeper When Your Product Needs It.

Authix supports two execution modes so your application can use a managed foundation first and connect Authix to a custom backend when more application specific server logic is required.

Cloud Mode

Fast application setup

Connect your frontend application directly to Authix Cloud through the SDK. Useful for MVPs, dashboards, internal tools, and applications that do not need a custom backend for their foundation services.

Embedded Server Mode

Custom backend integration

Integrate Authix into your own backend when your product needs custom business logic, AI services, payment integrations, background jobs, caching, or third party APIs.

Backend Foundation

Build Your Backend Foundation or Start With Authix

Skip repetitive authentication, identity, data ownership, CRUD, search, and pagination infrastructure. Start building the features that make your product unique.

Authentication

Build registration, login, sessions, verification, password recovery, and profile flows yourself.

Authentication, sessions, OTP verification, password recovery, and profile management are built in.

Identity and Data

Connect authenticated users to application records and maintain those relationships yourself.

Authenticated identity and user data work together as one connected foundation.

Data Ownership

Write and maintain ownership checks so users only access the records they are allowed to use.

User data is scoped to the authenticated user through Authix identity context.

Data APIs

Create and maintain repetitive CRUD endpoints and data access logic for each feature.

Use the Authix SDK for structured data operations, search, pagination, and updates.

Search and Pagination

Build search filters, pagination, cursor handling, and traversal logic repeatedly.

Built in search, field filtering, category filtering, cursor pagination, and iteration helpers.

Scaling Architecture

Rework your backend when moving from a simple MVP to a custom server architecture.

Start with Cloud Mode and integrate Authix into your own backend with Embedded Server Mode.

Cloud ModeEmbedded Server

Start quickly with Authix Cloud and integrate it into your own backend as your product grows.

Trusted by
Developers Worldwide

See why thousands of developers rely on Neuctra Authix for fast, secure, serverless authentication and data management.

A

Alex Morgan

Full-stack Developer

Solo Developer

“Neuctra Authix replaced our entire backend. Authentication + data storage in one package saved us months of development.”

S

Sarah Chen

Startup Founder

TechStart Inc

“We launched our MVP in 2 weeks using Neuctra Authix. No server setup, just React frontend + Neuctra Authix for everything backend.”

M

Marcus Rodriguez

CTO at ScaleUp

ScaleUp Technologies

“The ability to create multiple client apps from one dashboard while maintaining separate data stores is revolutionary.”

Common Questions

Questions Developers Ask About Neuctra Authix

Neuctra Authix is an identity native backend foundation that combines authentication, user identity management, and structured application data in one system. It provides authentication flows, identity aware data access, ownership context, search, pagination, concurrency control, and batch operations so developers can build products without repeatedly creating the same backend foundation.
Neuctra Authix connects authenticated identity with structured application data so data operations already have user context. Instead of building authentication separately and then creating custom relationships between users and application records, Authix provides identity and data as one connected backend foundation.
Yes. Neuctra Authix provides registration, login, cookie based sessions, email verification, password recovery, password changes, and profile management through its SDKs and API. In Cloud Mode, your application can use Authix without deploying a separate backend just for authentication and user data.
Neuctra Authix uses authenticated identity context to scope private user data to the current user. This means the application does not need to repeatedly build the basic connection between an authenticated account and that user's private records.
User data is structured data associated with an authenticated user, while application data is shared data used by the application as a whole. User data can represent notes, preferences, saved items, or other personal records, while application data can represent products, inventory, shared documents, or other application records.
Neuctra Authix is not positioned as a general purpose database replacement. It provides an identity aware data foundation for application data, combining authentication, identity context, structured JSON data, ownership, search, pagination, and related data operations in one system.
No. Neuctra Authix provides structured data operations through its SDKs so developers can create, read, update, and delete application records without repeatedly implementing the same basic data API layer. Authix also provides search, pagination, concurrency control, and batch operations.
Yes. Neuctra Authix provides built in search for users and application data, including free text search, JSON field filtering, category filtering, and cursor based pagination. This removes the need to create a separate basic search API for these operations.
Yes. Neuctra Authix uses bounded cursor based pagination for list operations and provides iteration helpers for walking through multiple pages. This keeps individual responses bounded while allowing applications to process larger collections.
Neuctra Authix provides optimistic concurrency control through record versions. Updates require the version that was last read, and a version conflict is raised when the record has changed since that version was retrieved.
Yes. Neuctra Authix supports atomic batches containing up to 50 create, update, or delete operations. The operations are processed as one all or nothing transaction.
Cloud Mode lets an application connect directly to Neuctra Authix Cloud through an Authix SDK. It is designed for developers who want to add authentication and identity aware data without deploying and maintaining a separate backend for those foundation services.
Embedded Server Mode lets developers integrate Authix into their own backend so Authix handles identity and data infrastructure while the custom server handles application specific logic. This is useful when an application needs custom APIs, AI services, payment integrations, background jobs, caching, or other server side functionality.
Yes. Neuctra Authix can be integrated into a custom server architecture. Your backend can handle application specific business logic and external services while the Authix SDK continues to provide authentication, identity, and structured data capabilities.
Neuctra Authix provides SDKs for JavaScript and TypeScript, Python, and Dart and Flutter. The SDK ecosystem is designed to give developers access to the same Authix foundation across web, server, Python, and Flutter applications.
Yes. Authix supports JavaScript and TypeScript applications and can be integrated into frontend and server environments such as React, Next.js, and Express. Authix also provides a Dart and Flutter SDK for Flutter applications.
Yes, when the correct API key is used. Authix provides an API key for client applications and an API key for trusted server environments. The API key is intended for client side use, while the API key provides administrative access and must remain on a secure server.
The Authix API key is designed for client applications and limits operations to the permissions available to the signed in user. The API key is intended for trusted server environments and provides administrative access to users and application records, so it must never be exposed in browser or mobile application code.
Yes. Neuctra Authix can provide the identity and structured data foundation for AI products while custom server logic handles AI services and application specific workflows. Its Embedded Server Mode also allows Authix to sit alongside AI services and other backend integrations.
Yes. Neuctra Authix provides Model Context Protocol servers that give compatible AI coding assistants authoritative knowledge of the Authix SDKs and APIs. The knowledge is generated from the SDK source so changes to supported APIs can be reflected in the generated development context.
Neuctra Authix can provide the backend foundation for MVPs, SaaS products, internal tools, AI applications, ecommerce platforms, CRM systems, booking systems, learning platforms, dashboards, and other applications that need authentication, identity aware data, and structured application records.
Yes. Authix provides Cloud Mode for quickly building applications and Embedded Server Mode for applications that need their own backend logic and integrations. This lets developers start with a simple architecture and integrate Authix into a more customized server architecture as the application develops.

Build auth & Manage user datawithout backend headaches

Neuctra Authix gives you authentication, user data storage, and UI components in one clean SDK — ready in minutes.

Get started for freeGitHub

Free forever • No credit card • Unlimited apps