Module types 

Contains all the data structures that represent the Model-Context-Protocol specification.

Structs

FunctionCall

The details of a function call requested by the model.

FunctionDefinition

The definition of a function, including its parameters.

GetContextRequest

The main request object sent from the MCP host to the agent.

GetContextResponse

The final response object sent from the agent back to the MCP host in a non-streaming context.

Message

A single message in the conversation history.

PartialResponse

Represents a part of a streamed response from the agent. This is a wrapper around the standard Response object, allowing for incremental streaming.

Response

The response from an agent’s handler, which can contain content, tool calls, or tool results. This is the primary object that agent handlers should create and return.

Tool

A definition of a tool that the model can request to use.

ToolCall

A request from the model to call a tool (a function).

ToolInputSchema

The JSON schema for a tool’s input parameters.

ToolResult

The result of a tool call, to be sent back to the model.

UserInfo

Information about the user interacting with the agent.

Enums

Role

Represents the role of the entity creating a message.