What is MCP (Model Context Protocol)?

MCP (Model Context Protocol) is an open standard that lets AI assistants call external tools and read external data through a consistent interface. ArgusTest exposes your iOS device to assistants like Claude Code and Cursor as a set of MCP tools, so the AI can request screenshots, logs, and device state directly.

Before MCP, connecting an AI assistant to a new data source or tool meant a bespoke integration. MCP standardizes that: a tool server advertises a set of named tools, and any MCP-compatible assistant can call them in plain language.

ArgusTest runs an MCP server on your Mac that publishes 20 device tools. When you ask your assistant "what's on screen right now?", it calls the ArgusTest screenshot tool over MCP and reasons about the result.