Class McpTool

java.lang.Object

com.google.adk.tools.BaseTool

com.google.adk.tools.mcp.AbstractMcpTool<io.modelcontextprotocol.client.McpSyncClient>

com.google.adk.tools.mcp.McpTool

public final class McpTool
extends AbstractMcpTool<io.modelcontextprotocol.client.McpSyncClient>

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.

Nested Class Summary

Nested classes/interfaces inherited from class BaseTool

BaseTool.ToolArgsConfig, BaseTool.ToolConfig

Field Summary

Fields inherited from class AbstractMcpTool

mcpSession, mcpSessionManager, mcpTool, objectMapper

Constructor Summary

Constructors

Constructor	Description
McpTool(io.modelcontextprotocol.spec.McpSchema.Tool mcpTool, io.modelcontextprotocol.client.McpSyncClient mcpSession, McpSessionManager mcpSessionManager)	Creates a new McpTool with the default ObjectMapper.
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.

Method Summary

Modifier and Type	Method	Description
io.reactivex.rxjava3.core.Single<Map<String,Object>>	runAsync(Map<String,Object> args, ToolContext toolContext)	Calls a tool.

Methods inherited from class AbstractMcpTool

annotations, declaration, getMcpSession, meta, wrapCallResult

Methods inherited from class BaseTool

customMetadata, description, fromConfig, longRunning, name, processLlmRequest, setCustomMetadata

Methods inherited from class 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)

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

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