Module messages

MCP Protocol Messages

This module defines all protocol message types used in MCP communication, aligned with the 2025-03-26 specification.

Structs

CallToolParams

Parameters for tool call request

CancelledParams

Parameters for cancelled notification

CompleteParams

Parameters for completion request

CompleteResult

Result for completion request

CompletionArgument

Argument for completion

CompletionData

Completion data

CreateMessageParams

Parameters for sampling/createMessage request

GetPromptParams

Parameters for prompt get request

InitializeParams

Parameters for initialize request

InitializeResult

Result for initialize request

InitializedParams

Parameters for initialized notification

ListParams

Parameters for list requests (with pagination)

ListPromptsParams

Parameters for list prompts request

ListPromptsResult

Result for list prompts request

ListResourceTemplatesResult

Result for list resource templates request

ListResourcesParams

Parameters for list resources request

ListResourcesResult

Result for list resources request

ListRootsResult

Result for list roots request

ListToolsParams

Parameters for list tools request

ListToolsResult

Result for list tools request

LoggingMessageNotificationParams

Parameters for logging message notification (alias for better naming)

LoggingMessageParams

Parameters for logging message notification

PingParams

Parameters for ping request

PingResult

Result for ping request

ProgressNotificationParams

Parameters for progress notification (alias for better naming)

ProgressParams

Parameters for progress notification

PromptListChangedParams

Parameters for prompt list changed notification

ReadResourceParams

Parameters for resource read request

ReadResourceResult

Result for read resource request

ResourceListChangedParams

Parameters for resource list changed notification

ResourceUpdatedParams

Parameters for resource updated notification

Root

Root definition

SetLoggingLevelParams

Parameters for logging level set request

SetLoggingLevelResult

Result for set logging level request

SubscribeResourceParams

Parameters for resource subscription request

SubscribeResourceResult

Result for subscribe resource request

ToolListChangedParams

Parameters for tool list changed notification

UnsubscribeResourceParams

Parameters for resource unsubscription request

UnsubscribeResourceResult

Result for unsubscribe resource request

Enums

CompletionReference

Reference for completion