Module types

Expand description

Complete MCP Protocol Types for 2025-03-26 Specification

This module contains all the core types defined by the Model Context Protocol specification version 2025-03-26, including all new features and capabilities.

Modules§

error_codes: Standard JSON-RPC error codes

Structs§

Annotations: Tool behavior annotations (2025-03-26)
AudioContent: Audio content (2025-03-26 NEW)
CallToolResult: Result of a tool execution (2025-03-26 with metadata)
ClientCapabilities: Client capabilities for 2025-03-26
CompletionsCapability: Autocompletion capabilities (2025-03-26)
CreateMessageResult: Result of sampling/createMessage (2025-03-26)
EmbeddedResource: Embedded resource content (2025-03-26)
ErrorObject: Error object
GetPromptResult: Result of prompt execution (2025-03-26 with metadata)
ImageContent: Image content
Implementation: Information about an MCP implementation
JsonRpcError: JSON-RPC error message
JsonRpcNotification: JSON-RPC notification message
JsonRpcRequest: JSON-RPC request message
JsonRpcResponse: JSON-RPC response message
LoggingCapability: Logging capabilities (2025-03-26)
ModelPreferences: Model preferences for sampling
Notification: Base notification with metadata support
NotificationParams: Notification parameters with metadata
PaginatedRequest: Base for paginated requests
PaginatedResult: Base for paginated results
Prompt: Prompt definition
PromptArgument: Argument for a prompt
PromptMessage: Message in a prompt result (2025-03-26 with audio support)
PromptsCapability: Prompt-related server capabilities
Request: Base request with metadata support
RequestMeta: Request metadata
RequestParams: Request parameters with metadata
Resource: Resource definition
ResourceReference: Resource reference for embedded resources
ResourceTemplate: Resource template for URI patterns
ResourcesCapability: Resource-related server capabilities
RootsCapability: Roots capability for clients (2025-03-26)
SamplingCapability: Sampling-related capabilities
SamplingMessage: A message in a sampling conversation (2025-03-26 with audio)
ServerCapabilities: Server capabilities for 2025-03-26
TextContent: Text content
Tool: Tool definition with annotations (2025-03-26)
ToolInputSchema: Tool input schema
ToolsCapability: Tool-related server capabilities

Enums§

AnnotationAudience: Target audience for tool usage
Content: Unified content type (2025-03-26 complete)
DangerLevel: Danger level classification for tools
JsonRpcId: JSON-RPC ID type for better type safety
JsonRpcMessage: Complete JSON-RPC message types (2025-03-26)
JsonRpcRequestOrNotification: Items in a batch request
JsonRpcResponseOrError: Items in a batch response
LoggingLevel: Logging level enumeration (2025-03-26)
ResourceContents: Content of a resource
Role: Message role
StopReason: Reasons why sampling stopped

Constants§

JSONRPC_VERSION
LATEST_PROTOCOL_VERSION: MCP Protocol version (2025-03-26)
PROTOCOL_VERSION

Type Aliases§

ClientInfo
Cursor: Cursor for pagination
JsonRpcBatchRequest: JSON-RPC batch request (2025-03-26 NEW)
JsonRpcBatchResponse: JSON-RPC batch response (2025-03-26 NEW)
ProgressToken: Progress token for associating notifications with requests
PromptInfo
PromptResult
RequestId: Request ID for JSON-RPC correlation
ResourceInfo
ServerInfo
ToolInfo
ToolResult