# QR Suisse API > Index of the documentation of the QR Suisse REST API (v1), for developers and AI agents: reference, OpenAPI specification, authentication, instructions for agents, versioning and deprecation policy, and the read-only documentation MCP server. QR Suisse is a dynamic QR code generator; it has no connection with the Swiss QR-bill. ## Docs - [QR Suisse API documentation](https://www.qrsuisse.ch/en/api-documentation) - [QR Suisse API feature page](https://www.qrsuisse.ch/en/features/qr-code-api) - [OpenAPI specification (JSON)](https://www.qrsuisse.ch/openapi.json) - [OpenAPI specification (YAML)](https://www.qrsuisse.ch/openapi.yaml) - [API authentication (auth.md)](https://www.qrsuisse.ch/auth.md) - [Manage your API keys (help)](https://www.qrsuisse.ch/en/help/api-keys) - [Instructions for agents acting on behalf of a user (agents.md)](https://www.qrsuisse.ch/agents.md) - [Agent instructions, plugin manifest and skill (qrsuisse-agents GitHub repository)](https://github.com/skyday-sarl/qrsuisse-agents) - [API catalog (RFC 9727)](https://www.qrsuisse.ch/.well-known/api-catalog) - [Agentic resource catalog (ARD)](https://www.qrsuisse.ch/.well-known/ard.json) - [QR Suisse documentation MCP server (Streamable HTTP, read-only, no API key)](https://www.qrsuisse.ch/mcp/docs) - [QR Suisse MCP server (documentation)](https://www.qrsuisse.ch/en/api-documentation/mcp-server) - [API v1 base URL (public index)](https://app.qrsuisse.ch/api/v1) - [API versioning and deprecation policy](https://www.qrsuisse.ch/docs/deprecation) - [Pricing (Markdown)](https://www.qrsuisse.ch/pricing.md) ## Optional - [Full index of the QR Suisse website (llms.txt)](https://www.qrsuisse.ch/llms.txt)