Module handler 

MCP request handler implementation

Provides MCP protocol request handling logic, including tool listing, tool invocation, and resource lists.

Main Structs

• CratesDocsHandler: MCP handler implementing standard protocol interface
• HandlerConfig: Handler configuration class, supports merge operation

Design

Single-layer architecture with all handling logic directly in CratesDocsHandler.

Structs

CratesDocsHandler

MCP server handler

HandlerConfig

Handler configuration (supports merging)

ToolExecutionResult

Tool execution result (supports different return type conversions)