> ## Documentation Index
> Fetch the complete documentation index at: https://docs.codegateapp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CodeGate Overview

> Lightweight activation code, invite code, and verification code management - REST API and multi-language SDK

## What is CodeGate?

CodeGate is a lightweight Python backend service focused on **activation codes, invite codes, and verification codes (OTP)** — generation, expiration, verification, and management. It provides **REST API** and **Python / JavaScript SDK**, and can run **standalone** or be **embedded in other systems**. It fits **SaaS platforms, mobile apps, games, membership systems**, and similar use cases.

## Core features

* **Project management**: Create, update, and query projects with project-level activation code management
* **Batch code generation**: Custom format (length, prefix, suffix), per-code expiration
* **Code verification**: Verify via API or web UI, prevent double use, automatic expiration checks
* **Reactivate**: Reset used codes to unused (e.g. refund scenarios)
* **API Key auth**: HMAC-SHA256 signature; Secret never transmitted
* **Multi-language SDK**: Python and JavaScript/TypeScript clients

## Quick start

<Card title="Quick start" icon="rocket" href="/en/quickstart" horizontal>
  Install and verify your first code in four steps
</Card>

## Using the SDK

Prefer the SDK to avoid writing signing logic:

<Columns cols={2}>
  <Card title="Python SDK" icon="python" href="/en/sdk/python">
    For Python 3.10+ projects
  </Card>

  <Card title="JavaScript SDK" icon="javascript" href="/en/sdk/javascript">
    For Node.js 18+ and TypeScript
  </Card>
</Columns>

## API reference

Calling the REST API directly? See the full endpoint docs and OpenAPI spec:

<Card title="API reference" icon="terminal" href="/en/api-reference/introduction">
  Projects, codes, verify, reactivate, statistics
</Card>

## AI / LLM index

Document index for AI/LLM (llms.txt); open in a new window:

<Card title="llms.txt" icon="file-lines" href="/en/llms" horizontal>
  Open llms.txt in a new window
</Card>

## Tech stack

* **Backend**: Python 3.12+, FastAPI, SQLAlchemy
* **Database**: SQLite / PostgreSQL
* **Frontend**: Next.js + Tailwind CSS
* **Deploy**: Docker / docker compose

## License

Apache License 2.0