# Runtime

## Key Methods:

* **`initialize()`**: Sets up the agent's runtime environment, including services, plugins, and knowledge processing.
* **`processActions()`**: Executes actions based on message content and state.
* **`evaluate()`**: Assesses messages and state using registered evaluators.
* **`composeState()`**: Constructs the agent's state object for response generation.
* **`updateRecentMessageState()`**: Updates the state with recent messages and attachments.
* **`registerService()`**: Adds a service to the runtime.
* **`registerMemoryManager()`**: Registers a memory manager for specific types of memories.
* **`ensureRoomExists()` / `ensureUserExists()`**: Ensures the existence of rooms and users in the database.

## State Management:

```typescript
interface State {
    // Core identifiers
    userId?: UUID;
    agentId?: UUID;
    roomId: UUID;

    // Character information
    bio: string;
    lore: string;
    messageDirections: string;
    postDirections: string;

    // Conversation context
    actors: string;
    actorsData?: Actor[];
    recentMessages: string;
    recentMessagesData: Memory[];

    // Goals and knowledge
    goals?: string;
    goalsData?: Goal[];
    knowledge?: string;
    knowledgeData?: KnowledgeItem[];
    ragKnowledgeData?: RAGKnowledgeItem[];
}

// State management methods
async function manageState() {
    // Initial state composition
    const state = await runtime.composeState(message, {
        additionalContext: "custom context"
    });

    // Update state with new messages
    const updatedState = await runtime.updateRecentMessageState(state);
}
```