MCP Server
An <a href="https://claude-me.com/en/glossary/mcp-tools/mcp-protocol/" target="_blank">MCP (Model Context Protocol)</a> server is a standardized interface that lets Claude connect to external tools and services. Through MCP Servers, Claude can directly read Google Drive, operate Notion, query databases — turning AI conversations into workflows that actually execute tasks.
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Sub-Agent
A <a href="https://aiagent-bible.com/en/glossary/multi-agent/subagent/" target="_blank">Sub-agent</a> is a separate Claude instance spun up by a main task to handle one self-contained piece of work, then report the result back. The main task only needs the output to continue — not the internal reasoning that produced it.
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