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Beyond basic tools, what advanced MCP patterns matter: resources, prompts, sampling, and roots?

Most people know MCP exposes tools. The deeper signal is the full primitive set (resources, prompts, sampling, roots) and the patterns: server composition, sampling for nested LLM calls, and scoping access safely.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Most people know MCP exposes tools. The deeper signal is the full primitive set (resources, prompts, sampling, roots) and the patterns: server composition, sampling for nested LLM calls, and scoping access safely.

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