MCP turned tool-use from vendor-specific glue into an open standard. Here is the operator-level explanation of what it changes and what to ask your vendors.
If you have heard “MCP” in a vendor pitch and nodded politely, here is what it actually is, why it matters in 2026, and the three questions to ask any AI vendor about it.
Every AI agent that talked to your CRM, your inbox, your calendar needed a custom integration written for each model vendor. Switch from GPT to Claude? Rewrite the tool-use layer.
MCP (Model Context Protocol) defines a single way for tools, data sources and models to talk to each other. Anthropic open-sourced it in late 2024 and by mid-2026 every major model vendor (OpenAI, Anthropic, Google, Mistral) supports it natively.
You can now build an MCP server for your internal data once (CRM, ticketing, docs) and any AI agent on any platform consumes it without bespoke glue. Vendor lock-in on the integration layer is mostly gone.
We deploy MCP-first architectures by default on every AI integration project from Q1 2026. The migration cost is small; the lock-in avoided is large.