What is promptx?

PromptX is a platform that lets you give AI tools like Claude or Cursor specialized expert personas through natural conversation. Instead of writing detailed instructions or memorizing specific commands, you type something like "I need a product manager expert" and the AI adopts that role for the rest of your session, bringing with it relevant knowledge and ways of thinking for that field. The system works through a protocol called MCP, which stands for Model Context Protocol, a standard way for AI applications to receive extra capabilities from external servers. PromptX runs a local server that your AI tool connects to, and from that point you can discover and activate available expert roles by simply asking for them in plain language. Roles can include things like product managers, software architects, security reviewers, or others, and users can also create their own. Beyond switching roles, PromptX includes a memory system that stores information across conversations so the AI can recall context from previous sessions. There is also a tool for creating custom skills that the AI can call during a conversation, and a visual editor for inspecting and modifying the stored memory. The easiest way to install it is through the PromptX Desktop client, which runs on macOS and Windows, handles the server automatically, and requires no command-line work. More technical users can install it via the npm package manager or run it with Docker. Once running, you add a short configuration block to your AI application pointing it at the local server address, and then the features are available directly in that application's chat interface. The desktop client also includes an embedded AI agent called AgentX that runs Claude sessions with access to all configured tools and maintains separate workspaces per conversation. A marketplace for sharing community-built roles is listed as coming soon.