Class McpAsyncToolset

java.lang.Object

com.google.adk.tools.mcp.McpAsyncToolset

All Implemented Interfaces:

BaseToolset, AutoCloseable

public class McpAsyncToolset
extends Object
implements BaseToolset

Connects to a MCP Server, and retrieves MCP Tools into ADK Tools.

Attributes:

• connectionParams: The connection parameters to the MCP server. Can be either ServerParameters or SseServerParameters.
• session: The MCP session being initialized with the connection.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	McpAsyncToolset.Builder	Builder for McpAsyncToolset

Constructor Summary

Constructors

Constructor	Description
McpAsyncToolset(McpSessionManager mcpSessionManager, com.fasterxml.jackson.databind.ObjectMapper objectMapper, Optional<Object> toolFilter)	Initializes the McpAsyncToolset with a provided McpSessionManager.
McpAsyncToolset(SseServerParameters connectionParams, com.fasterxml.jackson.databind.ObjectMapper objectMapper, Optional<Object> toolFilter)	Initializes the McpAsyncToolset with SSE server parameters.
McpAsyncToolset(io.modelcontextprotocol.client.transport.ServerParameters connectionParams, com.fasterxml.jackson.databind.ObjectMapper objectMapper, Optional<Object> toolFilter)	Initializes the McpAsyncToolset with local server parameters.

Method Summary

Modifier and Type	Method	Description
void	close()	Performs cleanup and releases resources held by the toolset.
io.reactivex.rxjava3.core.Flowable<BaseTool>	getTools(ReadonlyContext readonlyContext)	Return all tools in the toolset based on the provided context.

Methods inherited from class Object

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

Methods inherited from interface BaseToolset

isToolSelected, isToolSelected

Constructor Details

McpAsyncToolset

public McpAsyncToolset(SseServerParameters connectionParams,
 com.fasterxml.jackson.databind.ObjectMapper objectMapper,
 Optional<Object> toolFilter)

Initializes the McpAsyncToolset with SSE server parameters.

Parameters:

connectionParams - The SSE connection parameters to the MCP server.

objectMapper - An ObjectMapper instance for parsing schemas.

toolFilter - An Optional containing either a ToolPredicate or a List of tool names.

McpAsyncToolset

public McpAsyncToolset(io.modelcontextprotocol.client.transport.ServerParameters connectionParams,
 com.fasterxml.jackson.databind.ObjectMapper objectMapper,
 Optional<Object> toolFilter)

Initializes the McpAsyncToolset with local server parameters.

Parameters:

connectionParams - The local server connection parameters to the MCP server.

objectMapper - An ObjectMapper instance for parsing schemas.

toolFilter - An Optional containing either a ToolPredicate or a List of tool names.

McpAsyncToolset

public McpAsyncToolset(McpSessionManager mcpSessionManager,
 com.fasterxml.jackson.databind.ObjectMapper objectMapper,
 Optional<Object> toolFilter)

Initializes the McpAsyncToolset with a provided McpSessionManager.

Parameters:

mcpSessionManager - The session manager for MCP connections.

objectMapper - An ObjectMapper instance for parsing schemas.

toolFilter - An Optional containing either a ToolPredicate or a List of tool names.

Method Details

getTools

public io.reactivex.rxjava3.core.Flowable<BaseTool> getTools(ReadonlyContext readonlyContext)

Description copied from interface: BaseToolset

Return all tools in the toolset based on the provided context.

Specified by:

getTools in interface BaseToolset

Parameters:

readonlyContext - Context used to filter tools available to the agent.

Returns:

A Single emitting a list of tools available under the specified context.

close

public void close()

Description copied from interface: BaseToolset

Performs cleanup and releases resources held by the toolset.

NOTE: This method is invoked, for example, at the end of an agent server's lifecycle or when the toolset is no longer needed. Implementations should ensure that any open connections, files, or other managed resources are properly released to prevent leaks.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface BaseToolset