Module io.modelcontextprotocol.sdk.mcp

Package io.modelcontextprotocol.server

Record Class McpServerFeatures.AsyncToolSpecification

java.lang.Object

java.lang.Record

io.modelcontextprotocol.server.McpServerFeatures.AsyncToolSpecification

Record Components:

tool - The tool definition including name, description, and parameter schema

call - Deprecated. Use the callHandler instead.

callHandler - The function that implements the tool's logic, receiving a McpAsyncServerExchange and a McpSchema.CallToolRequest and returning results. The function's first argument is an McpAsyncServerExchange upon which the server can interact with the connected client. The second arguments is a map of tool arguments.

Enclosing class:

McpServerFeatures

public static record McpServerFeatures.AsyncToolSpecification(McpSchema.Tool tool, BiFunction<McpAsyncServerExchange,Map<String,Object>,reactor.core.publisher.Mono<McpSchema.CallToolResult>> call, BiFunction<McpAsyncServerExchange,McpSchema.CallToolRequest,reactor.core.publisher.Mono<McpSchema.CallToolResult>> callHandler)
extends Record

Specification of a tool with its asynchronous handler function. Tools are the primary way for MCP servers to expose functionality to AI models. Each tool represents a specific capability.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	McpServerFeatures.AsyncToolSpecification.Builder	Builder for creating AsyncToolSpecification instances.

Constructor Summary

Constructors

Constructor	Description
AsyncToolSpecification(McpSchema.Tool tool, BiFunction<McpAsyncServerExchange,Map<String,Object>,reactor.core.publisher.Mono<McpSchema.CallToolResult>> call)	Deprecated. Use {@link AsyncToolSpecification(McpSchema.Tool, null, BiFunction)} instead.
AsyncToolSpecification(McpSchema.Tool tool, BiFunction<McpAsyncServerExchange,Map<String,Object>,reactor.core.publisher.Mono<McpSchema.CallToolResult>> call, BiFunction<McpAsyncServerExchange,McpSchema.CallToolRequest,reactor.core.publisher.Mono<McpSchema.CallToolResult>> callHandler)	Creates an instance of a AsyncToolSpecification record class.

Method Summary

Modifier and Type	Method	Description
static McpServerFeatures.AsyncToolSpecification.Builder	builder()	Creates a new builder instance.
BiFunction<McpAsyncServerExchange,Map<String,Object>,reactor.core.publisher.Mono<McpSchema.CallToolResult>>	call()	Deprecated.
BiFunction<McpAsyncServerExchange,McpSchema.CallToolRequest,reactor.core.publisher.Mono<McpSchema.CallToolResult>>	callHandler()	Returns the value of the callHandler record component.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
final int	hashCode()	Returns a hash code value for this object.
McpSchema.Tool	tool()	Returns the value of the tool record component.
final String	toString()	Returns a string representation of this record class.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

AsyncToolSpecification

@Deprecated
public AsyncToolSpecification(McpSchema.Tool tool,
 BiFunction<McpAsyncServerExchange,Map<String,Object>,reactor.core.publisher.Mono<McpSchema.CallToolResult>> call)

Deprecated.

Use {@link AsyncToolSpecification(McpSchema.Tool, null, BiFunction)} instead.

AsyncToolSpecification

public AsyncToolSpecification(McpSchema.Tool tool,
 @Deprecated
 BiFunction<McpAsyncServerExchange,Map<String,Object>,reactor.core.publisher.Mono<McpSchema.CallToolResult>> call,
 BiFunction<McpAsyncServerExchange,McpSchema.CallToolRequest,reactor.core.publisher.Mono<McpSchema.CallToolResult>> callHandler)

Creates an instance of a AsyncToolSpecification record class.

Parameters:

tool - the value for the tool record component

call - the value for the call record component

callHandler - the value for the callHandler record component

Method Details

builder

public static McpServerFeatures.AsyncToolSpecification.Builder builder()

Creates a new builder instance.

Returns:

a new Builder instance

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

tool

public McpSchema.Tool tool()

Returns the value of the tool record component.

Returns:

the value of the tool record component

call

@Deprecated
public BiFunction<McpAsyncServerExchange,Map<String,Object>,reactor.core.publisher.Mono<McpSchema.CallToolResult>> call()

Deprecated.

Returns the value of the call record component.

Returns:

the value of the call record component

callHandler

public BiFunction<McpAsyncServerExchange,McpSchema.CallToolRequest,reactor.core.publisher.Mono<McpSchema.CallToolResult>> callHandler()

Returns the value of the callHandler record component.

Returns:

the value of the callHandler record component