Developer Docs

QR Code Docs: LLM & AI Integration, API, SDK

Use the public API, connect AI agents to the live generate_qr MCP tool, or install the official typed JavaScript SDK.

API Reference GET/POST endpoints, parameters, response formats, code examples in JS, Python, curl, and Go. MCP Server Connect Claude, Codex, and other AI agents to the official remote generate_qr tool. Official JavaScript SDK Typed methods for every public endpoint, direct package download, and runnable examples. LLM Integration Function calling schemas, MCP server setup, system prompts for giving AI agents QR capabilities. Claude Code Bash tool usage, MCP server config, and example conversation flows for Anthropic's CLI. OpenAI Codex Custom GPT actions, Assistants API, Responses API, and function calling examples. Python Generate QR codes with the requests library. GET, POST, batch generation, Flask integration. Node.js Native fetch, zero dependencies. Express middleware, TypeScript types, batch generation. n8n HTTP Request node integration. Generate QR codes in automated workflows without code. Zapier Webhooks by Zapier integration. Direct image URLs or custom webhook requests.
Official agent tooling is live
  • MCP discovery document — machine-readable server metadata and the single generate_qr tool.
  • MCP setup guide — ready-to-paste Claude Code, Claude Desktop, and Codex configuration.
  • Official SDK — installable @qrgen/sdk package with TypeScript declarations.
Quick Start
curl "https://qrgenapp.com/api/qr?data=hello&format=png" -o qr.png

That's it. No API key, no signup. Returns a PNG image directly.