Class CallToolRequestParams

Namespace

ModelContextProtocol.Protocol

Assembly

ModelContextProtocol.Core.dll

Represents the parameters used with a ToolsCall request from a client to invoke a tool provided by the server.

public sealed class CallToolRequestParams : RequestParams

Inheritance

object

RequestParams

CallToolRequestParams

Inherited Members

RequestParams.Meta

RequestParams.ProgressToken

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

The server will respond with a CallToolResult containing the result of the tool invocation. See the schema for details.

Properties

Arguments

Gets or sets optional arguments to pass to the tool when invoking it on the server.

[JsonPropertyName("arguments")]
public IDictionary<string, JsonElement>? Arguments { get; set; }

Property Value

IDictionary<string, JsonElement>

Remarks

This dictionary contains the parameter values to be passed to the tool. Each key-value pair represents a parameter name and its corresponding argument value.

Name

Gets or sets the name of the tool to invoke.

[JsonPropertyName("name")]
public required string Name { get; set; }

Property Value

string

Task

Gets or sets optional task metadata to augment this request with task execution.

[JsonPropertyName("task")]
public McpTaskMetadata? Task { get; set; }

Property Value

McpTaskMetadata

Remarks

When present, indicates that the requestor wants this operation executed as a task. The receiver must support task augmentation for this specific request type.