Tools

Tools are the actions an agent can perform through MCP servers. Each MCP server exposes a set of tools — functions the agent can call during a conversation to fetch data, create records, or perform actions in external systems.

How Tools Work

1. auxilia connects to an MCP server and discovers its available tools
2. Each tool has a name, description, and input schema
3. The LLM decides when to call a tool based on the conversation context
4. auxilia executes the tool call against the MCP server
5. The result is returned to the LLM to incorporate into its response

Tool Discovery

When you bind an MCP server to an agent, auxilia fetches the list of tools from the server. These appear in the agent’s configuration with their names and descriptions.

Tools are refreshed each time the agent handles a message, so new tools added to an MCP server are picked up automatically.

Tool Execution in Chat

During a conversation, tool calls appear in the chat as expandable blocks showing:

• The tool name and which MCP server it belongs to
• The input parameters sent to the tool
• The result returned by the tool
• Whether the call was auto-approved or required manual approval