Module protocol 

MCP Protocol handlers

This module contains core MCP protocol handlers:

• handle_initialize: Initialize request handler
• handle_list_tools: List available tools
• handle_shutdown: Shutdown the server

These handlers are used by both the library and binary crate.

Structs

DescribeToolResult

MCP DescribeTool response (for on-demand schema loading)

DescribeToolsResult

MCP DescribeTools (batch) response

InitializeResult

MCP Initialize response payload

ListToolStubsResult

MCP ListTools response with stubs (for lazy loading)

ListToolsResult

MCP ListTools response

McpTool

MCP Tool structure for listing (full schema)

OAuthConfig

OAuth 2.1 Configuration

ProtectedResourceMetadata

Protected Resource Metadata (RFC 9728)

ToolStub

MCP Tool stub for lightweight listing (lazy loading optimization) This reduces token usage by 90-96% by omitting the large inputSchema field

Constants

SUPPORTED_VERSIONS

Supported MCP protocol versions (in order of preference, latest first)

Functions

handle_describe_tool

Handle tools/describe request (ADR-024)

handle_describe_tools

Handle tools/describe_batch request (ADR-024)

handle_initialize

Handle initialize request

handle_list_tools

Handle tools/list request

handle_list_tools_with_lazy

Handle tools/list request with lazy loading support (ADR-024)

handle_shutdown

Handle shutdown request