# Features - MCP Server - Interaction Loop
This interaction loop is supported by comprehensive [observation](observation.md) of UI state and performant
frame rate observation to determine UI idling. Together, that allows for accurate and precise exploration with the
[action tool calls](actions.md).
```mermaid
sequenceDiagram
participant Agent as AI Agent
participant MCP as MCP Server
participant Device as Device
Agent->>MCP: 🤖 Interaction Request
MCP->>Device: 👀 Observe
Device-->>MCP: 📱 UI State/Data (Cached)
MCP->>Device: ⚡ Execute Actions
Device-->>MCP: ✅ Result
MCP->>Device: 👀 Observe
Device-->>MCP: 📱 UI State/Data
MCP-->>Agent: 🔄 Interaction Response with UI State
```