intermediateMCP Advanced — Sampling, Elicitation, Resources, Prompts
What is MCP 'sampling', and why is it a notably different direction of control flow than a normal tool call?
Sampling lets an MCP SERVER ask the CLIENT's LLM to generate a completion on the server's behalf — inverting the usual direction where the client always initiates. This lets a server perform its own AI-driven logic (like summarizing something internally) while borrowing the client's already-configured model access rather than needing its own API key.
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