Beyond basic tools, what advanced MCP patterns matter: resources, prompts, sampling, and roots?
Most people know MCP exposes tools. The deeper signal is the complete primitive set (resources, prompts, sampling, roots) and the patterns: server composition, sampling for nested LLM calls, and scoping access safely.
Updated Sep 2026 · Grounded in real GenAI, LLM, and AI/ML engineering interview loops and written to a senior-engineer editorial bar.
Most people know MCP exposes tools. The deeper signal is the complete primitive set (resources, prompts, sampling, roots) and the patterns: server composition, sampling for nested LLM calls, and scoping access safely.
Lead with where the obvious approach breaks, because that is the judgment they are screening for — most candidates jump straight to the happy path and lose the room.
Then walk the failure back through the pipeline in order, naming the one metric the customer's exec sponsor actually cares about before you propose the fix.
