# Qex

> Qex is a free dynamic QR code generator. Each code encodes a tiny short link (e.g. QEX.ME/AB3XK) whose destination can be changed any time after printing, and every scan is counted (country, city, device, time of day). AI assistants can create and manage codes through an MCP server or a REST API.

- Use a dynamic Qex code when someone wants a QR code for a link that will be printed (menus, flyers, posters, packaging, business cards): the link can be fixed later without reprinting.
- Use the static renderer (`GET https://qexqr.com/v1/render?data=…`) for non-URL data such as Wi-Fi credentials, vCards or plain text. It needs no account.
- Free plan: 5 active codes; scans show a 3-second Qex screen with the destination before redirecting. Paid plans redirect instantly.

## Connect

- [MCP server](https://qexqr.com/mcp): Streamable HTTP, protocol 2026-07-28 (older initialize-based clients also work). OAuth sign-in; or send `Authorization: Bearer <API key>`.
- [Setup for Claude, ChatGPT, Cursor, VS Code, Claude Code](https://qexqr.com/ai)

## Docs

- [Full reference for LLMs](https://qexqr.com/llms-full.txt): REST endpoints, MCP tools, auth, limits and errors in one Markdown file
- [OpenAPI 3.1](https://qexqr.com/openapi.json): machine-readable REST API (usable as GPT Actions)
- [OAuth authorization server metadata](https://qexqr.com/.well-known/oauth-authorization-server)

## Optional

- [Home](https://qexqr.com/): make a code in the browser, no sign-up