# SGPayNowQR > Singapore PayNow QR code generation API for developers and LLM agents SGPayNowQR provides a REST API to generate EMVCo-compliant PayNow QR codes for Singapore payments. Supports UEN, mobile number, and VPA payment types. ## API Endpoint POST https://developers.sgpaynowqr.com/api/v1/generate Requires an API key via X-API-Key header. Free tier: 50 requests/month. ## MCP Server https://developers.sgpaynowqr.com/api/mcp — Streamable HTTP, same API key, tool: generate_qr. For agents that call tools directly instead of writing REST code. Works with Claude Code, Claude, ChatGPT, Cursor, VS Code, Windsurf, Codex and Gemini CLI. stdio-only clients: npx -y @alexhalfborg/sgpaynowqr-mcp (env: SGPAYNOWQR_API_KEY). Per-client setup: https://developers.sgpaynowqr.com/docs/guides/mcp-server-setup ## n8n Community node: n8n-nodes-sgpaynowqr (npm). Setup, HTTP Request and MCP Client Tool options: https://developers.sgpaynowqr.com/docs/guides/n8n ## Docs - [API Documentation](https://developers.sgpaynowqr.com/docs) - [Guides](https://developers.sgpaynowqr.com/docs/guides) - [OpenAPI Spec](https://developers.sgpaynowqr.com/openapi.yaml) - [Full LLM Reference](https://developers.sgpaynowqr.com/llms-full.txt) - [TypeScript SDK](https://github.com/alexhalfborg/sgpaynowqr-sdk) ## Optional - [Developer Portal](https://developers.sgpaynowqr.com/register)