# Agents API

Use MCP, A2A, and the generated function catalog to connect agent clients to Hybridbox.

Choose the agent integration surface that matches your client. The Agents API documentation covers MCP tools, direct A2A gateway calls, and the generated function catalog used by both flows.

  

### MCP guide

[MCP guide](/en/agents/mcp)

    Connect MCP clients, list tools, explain functions, and execute validated Hybridbox calls.
  
  

### A2A guide

[A2A guide](/en/agents/a2a)

    Create sessions, discover functions, execute JSON-RPC calls, and subscribe to WebSocket updates.
  
  

### A2A function catalog

[A2A function catalog](/en/agents/a2a-function-catalog)

    Browse generated function signatures, required permissions, execution modes, and public API route mappings.