Module sampling 

MCP-Compliant Client-Side Sampling Support

This module provides the correct MCP architecture for handling sampling requests. The client’s role is to:

1. Receive sampling/createMessage requests from servers
2. Present them to users for approval (human-in-the-loop)
3. Delegate to external LLM services (which can be MCP servers themselves)
4. Return standardized results

Perfect MCP Compliance

Unlike embedding LLM APIs directly (anti-pattern), this implementation:

• Delegates to external services
• Maintains protocol boundaries
• Enables composition and flexibility
• Provides maximum developer experience through simplicity

Structs

AutoApprovingUserHandler

Default user handler that automatically approves (for development)

DelegatingSamplingHandler

Default implementation that delegates to external MCP servers

ServerInfo

Server information for model selection

Traits

LLMServerClient

Interface for connecting to LLM MCP servers

SamplingHandler

MCP-compliant sampling handler trait

UserInteractionHandler

Interface for user interaction (human-in-the-loop)