Technical Track Introduction

// Core runtime responsibilities
class AgentRuntime {
  // Manages agent lifecycle
  async initialize(): Promise<void>
  
  // Processes incoming messages
  async processMessage(message: Memory): Promise<Response>
  
  // Manages state and memory
  async composeState(message: Memory): Promise<State>
  
  // Coordinates actions
  async evaluateActions(state: State): Promise<Action[]>
  
  // Handles service registration
  registerService(service: Service): void
}

interface MemorySystem {
  // Short-term memory (conversation context)
  conversationMemory: Memory[]
  
  // Long-term memory (persistent storage)
  longTermMemory: MemoryStore
  
  // Semantic memory (knowledge base)
  knowledgeBase: KnowledgeStore
  
  // Working memory (current state)
  workingMemory: State
}

interface Plugin {
  name: string
  description: string
  
  // Optional components
  actions?: Action[]
  evaluators?: Evaluator[]
  providers?: Provider[]
  services?: Service[]
  
  // Lifecycle hooks
  onInitialize?: (runtime: IAgentRuntime) => Promise<void>
  onMessage?: (message: Memory) => Promise<void>
}

interface Action {
  name: string
  description: string
  
  // Validation logic
  validate: (runtime: IAgentRuntime, message: Memory) => Promise<boolean>
  
  // Execution logic
  handler: (runtime: IAgentRuntime, message: Memory) => Promise<Response>
  
  // Optional examples for better AI understanding
  examples?: Example[]
}

// Recommended project structure
my-elizaos-project/
├── src/
│   ├── plugins/           // Custom plugins
│   │   ├── my-plugin/
│   │   │   ├── index.ts
│   │   │   ├── actions/
│   │   │   ├── providers/
│   │   │   └── tests/
│   ├── agents/           // Agent configurations
│   ├── lib/              // Shared utilities
│   └── types/            // TypeScript definitions
├── tests/                // Test suites
├── scripts/              // Build and deploy scripts
└── docs/                 // Documentation

// Use strict typing for safety
import { IAgentRuntime, Memory, State } from '@elizaos/core';

// Define clear interfaces
interface MyCustomAction extends Action {
  customProperty: string;
  
  // Use generics for flexibility
  process<T extends Memory>(input: T): Promise<ProcessedResult>;
}

// Leverage type guards
function isValidMemory(obj: unknown): obj is Memory {
  return obj !== null && 
         typeof obj === 'object' && 
         'content' in obj;
}

// Unit tests for individual components
describe('CustomAction', () => {
  it('should validate correct messages', async () => {
    const result = await action.validate(runtime, message);
    expect(result).toBe(true);
  });
});

// Integration tests for plugins
describe('MyPlugin', () => {
  it('should register with runtime', async () => {
    const runtime = new AgentRuntime(config);
    await runtime.registerPlugin(myPlugin);
    expect(runtime.plugins).toContain(myPlugin);
  });
});

// E2E tests for complete flows
describe('Agent Conversation', () => {
  it('should handle multi-turn dialogue', async () => {
    const agent = await createAgent(config);
    const response = await agent.chat('Hello');
    expect(response).toMatchSnapshot();
  });
});

// 1. Efficient state composition
async function composeState(message: Memory): Promise<State> {
  // Parallel data fetching
  const [memories, knowledge, context] = await Promise.all([
    this.searchMemories(message),
    this.searchKnowledge(message),
    this.getRecentContext()
  ]);
  
  // Selective inclusion based on relevance
  return {
    relevantMemories: memories.slice(0, 5),
    knowledge: knowledge.slice(0, 3),
    recentMessages: context.slice(0, 10)
  };
}

// 2. Caching strategies
const cache = new LRUCache<string, EmbeddingVector>({
  max: 1000,
  ttl: 1000 * 60 * 60 // 1 hour
});

// 3. Connection pooling
const dbPool = new Pool({
  max: 20,
  idleTimeoutMillis: 30000,
  connectionTimeoutMillis: 2000,
});

// Implement API key validation
middleware.authenticate = async (req, res, next) => {
  const apiKey = req.headers['x-api-key'];
  
  if (!apiKey || !await validateApiKey(apiKey)) {
    return res.status(401).json({ error: 'Unauthorized' });
  }
  
  next();
};

// Role-based access control
const checkPermission = (action: string) => {
  return async (runtime: IAgentRuntime, message: Memory) => {
    const user = await runtime.getUser(message.userId);
    return user.permissions.includes(action);
  };
};

# Fork and clone
git clone https://github.com/yourusername/eliza.git
cd eliza

# Create feature branch
git checkout -b feature/my-awesome-feature

# Make changes and test
bun test
bun run lint

# Submit PR with clear description