Class McpTool

java.lang.Object

com.google.adk.tools.BaseTool

com.google.adk.tools.mcp.McpTool

public final class McpTool
extends BaseTool

"""Initializes a MCPTool.

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

Example: tool = MCPTool(mcp_tool=mcp_tool, mcp_session=mcp_session)

Args: mcp_tool: The MCP tool to wrap. mcp_session: The MCP session to use to call the tool. auth_scheme: The authentication scheme to use. auth_credential: The authentication credential to use.

Raises: ValueError: If mcp_tool or mcp_session is None.

Constructor Summary

Constructors

Constructor	Description
McpTool(io.modelcontextprotocol.spec.McpSchema.Tool mcpTool, io.modelcontextprotocol.client.McpSyncClient mcpSession, McpSessionManager mcpSessionManager)
McpTool(io.modelcontextprotocol.spec.McpSchema.Tool mcpTool, io.modelcontextprotocol.client.McpSyncClient mcpSession, McpSessionManager mcpSessionManager, com.fasterxml.jackson.databind.ObjectMapper objectMapper)

Method Summary

Modifier and Type	Method	Description
Optional<com.google.genai.types.FunctionDeclaration>	declaration()	Gets the FunctionDeclaration representation of this tool.
io.reactivex.rxjava3.core.Single<Map<String,Object>>	runAsync(Map<String,Object> args, ToolContext toolContext)	Calls a tool.
com.google.genai.types.Schema	toGeminiSchema(io.modelcontextprotocol.spec.McpSchema.JsonSchema openApiSchema)

Methods inherited from class com.google.adk.tools.BaseTool

description, longRunning, name, processLlmRequest

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

McpTool

public McpTool(io.modelcontextprotocol.spec.McpSchema.Tool mcpTool,
 io.modelcontextprotocol.client.McpSyncClient mcpSession,
 McpSessionManager mcpSessionManager)

McpTool

public McpTool(io.modelcontextprotocol.spec.McpSchema.Tool mcpTool,
 io.modelcontextprotocol.client.McpSyncClient mcpSession,
 McpSessionManager mcpSessionManager,
 com.fasterxml.jackson.databind.ObjectMapper objectMapper)

Method Details

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