Class McpTool

java.lang.Object
com.google.adk.tools.BaseTool
com.google.adk.tools.mcp.McpTool
public final class McpTool extends BaseTool
Initializes a MCP tool.

This wraps a MCP Tool interface and an active MCP Session. It invokes the MCP Tool through executing the tool from remote MCP Session.

  • Constructor Details

    • McpTool

      public McpTool(io.modelcontextprotocol.spec.McpSchema.Tool mcpTool, io.modelcontextprotocol.client.McpSyncClient mcpSession, McpSessionManager mcpSessionManager)
      Creates a new McpTool with the default ObjectMapper.
      Parameters:
      mcpTool - The MCP tool to wrap.
      mcpSession - The MCP session to use to call the tool.
      mcpSessionManager - The MCP session manager to use to create new sessions.
      Throws:
      IllegalArgumentException - If mcpTool or mcpSession are null.

    • McpTool

      public McpTool(io.modelcontextprotocol.spec.McpSchema.Tool mcpTool, io.modelcontextprotocol.client.McpSyncClient mcpSession, McpSessionManager mcpSessionManager, com.fasterxml.jackson.databind.ObjectMapper objectMapper)
      Creates a new McpTool with the default ObjectMapper.
      Parameters:
      mcpTool - The MCP tool to wrap.
      mcpSession - The MCP session to use to call the tool.
      mcpSessionManager - The MCP session manager to use to create new sessions.
      objectMapper - The ObjectMapper to use to convert JSON schemas.
      Throws:
      IllegalArgumentException - If mcpTool or mcpSession are null.

  • Method Details

    • getMcpSession

      public io.modelcontextprotocol.client.McpSyncClient getMcpSession()

    • toGeminiSchema

      public com.google.genai.types.Schema toGeminiSchema(io.modelcontextprotocol.spec.McpSchema.JsonSchema openApiSchema)

    • declaration

      public Optional<com.google.genai.types.FunctionDeclaration> declaration()
      Description copied from class: BaseTool
      Gets the FunctionDeclaration representation of this tool.
      Overrides:
      declaration in class BaseTool

    • runAsync

      public io.reactivex.rxjava3.core.Single<Map<String,Object>> runAsync(Map<String,Object> args, ToolContext toolContext)
      Description copied from class: BaseTool
      Calls a tool.
      Overrides:
      runAsync in class BaseTool