docs.celesto.ai

# Celesto AI > Celesto provides secure, isolated computers that AI agents can use to browse, code, and get real work done. ## Docs - [Agent-to-Agent communication](https://docs.celesto.ai/agentor/agent-to-agent.md) - [Agents API](https://docs.celesto.ai/agentor/agents-api.md): Build an Agent, add capabilities and serve as an API in just few lines of code. - [A2AController](https://docs.celesto.ai/agentor/api/a2a/controller.md): A2A protocol controller for agent-to-agent communication - [A2A Types](https://docs.celesto.ai/agentor/api/a2a/types.md): Type definitions for the A2A protocol - [Agentor](https://docs.celesto.ai/agentor/api/agentor.md): Core class for building and deploying production-ready AI agents - [LLM](https://docs.celesto.ai/agentor/api/llm.md): Lightweight LLM client for direct model interactions - [CelestoMCPHub](https://docs.celesto.ai/agentor/api/mcp/hub.md): Client for connecting to Celesto AI's MCP Hub service - [LiteMCP](https://docs.celesto.ai/agentor/api/mcp/litemcp.md): ASGI-compatible MCP server built on FastAPI with decorator-based API - [MCPAPIRouter](https://docs.celesto.ai/agentor/api/mcp/router.md): Router for MCP JSON-RPC methods with FastAPI-like decorator API - [ModelSettings](https://docs.celesto.ai/agentor/api/model-settings.md): Configure LLM model parameters and behavior - [Tools](https://docs.celesto.ai/agentor/api/tools.md): Create and use tools with AI agents - [Calculator Tool](https://docs.celesto.ai/agentor/api/tools/calculator.md): Perform basic arithmetic operations - [FetchTool](https://docs.celesto.ai/agentor/api/tools/fetch.md): Fetch content from URLs using HTTP methods - [GitTool](https://docs.celesto.ai/agentor/api/tools/git.md): Execute Git commands on repositories - [GitHubTool](https://docs.celesto.ai/agentor/api/tools/github.md): Interact with GitHub repositories, issues, and pull requests - [GmailTool](https://docs.celesto.ai/agentor/api/tools/gmail.md): Read-only Gmail tool for searching and fetching messa