# SDK Reference

TypeScript method signatures, parameters, and return types for the Agentuity SDK

These pages document method signatures, parameters, and return types for the Agentuity TypeScript SDK. For concepts and patterns, see [Agents](/agents), [Routes](/routes), [Frontend](/frontend), [Services](/services), and [Cookbook](/cookbook). For using services outside the runtime, see [Standalone Packages](/reference/standalone-packages).

- [Application Entry](/reference/sdk-reference/application-entry): Initialize your app with createApp()
- [Agents](/reference/sdk-reference/agents): Define agents with createAgent() and handle inputs
- [Schema Validation](/reference/sdk-reference/schema): Type-safe validation with StandardSchema
- [Context API](/reference/sdk-reference/context-api): Storage, logging, state management, and services via ctx.*
- [Router & Routes](/reference/sdk-reference/router): HTTP endpoints, middleware, and WebSocket handlers
- [Calling Other Agents](/reference/sdk-reference/communication): Call agents from routes or other agents
- [Storage APIs](/reference/sdk-reference/storage): KV, Vector, Database, Object, and Stream storage
- [Message Queues](/reference/sdk-reference/queue-service): Publish and manage messages with ctx.queue
- [Tasks](/reference/sdk-reference/task-service): Track work items with ctx.task
- [Email](/reference/sdk-reference/email-service): Send and manage email with ctx.email
- [Schedules](/reference/sdk-reference/schedule-service): Cron-based scheduled jobs with ctx.schedule
- [Sandbox](/reference/sdk-reference/sandbox-service): Isolated code execution with ctx.sandbox
- [Coder](/reference/sdk-reference/coder): Manage AI coding sessions with CoderClient
- [Observability](/reference/sdk-reference/observability): Structured logging and OpenTelemetry tracing
- [Event System](/reference/sdk-reference/events): Lifecycle hooks for monitoring agents
- [Runtime Utilities](/reference/sdk-reference/advanced): File imports, standalone execution, context detection, and build metadata