# Getting Started

- [Quickstart](/en-docs/getting-started/quickstart.md)
- [Get Your API Key](/en-docs/getting-started/get-your-api-key.md)
- [API Limitation](/en-docs/getting-started/api-limitation.md)
- [REST API Limitation](/en-docs/getting-started/api-limitation/rest-api-limitation.md)
- [WebSocket Limitation](/en-docs/getting-started/api-limitation/websocket-limitation.md)
- [Error Codes](/en-docs/getting-started/error-codes.md)
- [REST API Error Codes](/en-docs/getting-started/error-codes/rest-api-error-codes.md)
- [WebSocket Error Codes](/en-docs/getting-started/error-codes/websocket-error-codes.md)
- [Endpoints](/en-docs/getting-started/endpoints.md): This section describes how to access real-time and historical market data through our REST APIs. All endpoints support batch queries and follow a consistent RESTful path structure.
- [HTTP Protocols](/en-docs/getting-started/http-protocols.md): Technical overview of HTTP API requests and responses, including authentication headers, request format, and JSON response structure for market data access.