Every agent has a reasoning engine. MCP gives it hands. Without a standard protocol, agents can only read text. With MCP, they can query inventory, check pricing, book appointments, and complete transactions.
What It Is
Model Context Protocol (MCP) is an open protocol created by Anthropic that standardizes how agents connect to external tools and business systems[1]. Before MCP, every integration was bespoke. Each agent vendor built custom connectors to each service, and none of them were compatible. MCP replaced that fragmentation with a single spec, and Anthropic donated governance to the Linux Foundation in early 2025[2] to make it vendor-neutral.
Why It Matters
MCP gives your business a single front door for agents. You build one MCP server that exposes your capabilities, and every MCP-compatible agent can interact with it immediately. No per-vendor SDK, no maintaining five different integrations. One server, every agent.
How It Works
An MCP server exposes your capabilities as named tools and resources. An MCP client, built into the agent, discovers what your server offers and calls the appropriate tool. Transport is HTTP for cloud-hosted servers and stdio for local integrations.
The agent does not need to know your API schema in advance. It asks the server what is available, reads the tool descriptions, and decides what to call.
What Businesses Can Expose
Common capabilities include:
- Inventory levels and real-time pricing
- Appointment availability and booking confirmations
- Checkout flows and order status
You define each capability as a tool with a name, description, and input schema. The agent sees only what you choose to expose, and you can revoke access at any time.
Who's Adopted It
OpenAI added MCP support to its Agents SDK in March 2025[3]. Google followed with native integration in Gemini[4]. Within months, MCP became the de facto standard for agent-to-service communication.
How Scanner Helps
Before agents can call your MCP server, they need to discover it exists. Scanner audits the signals that determine whether agents can find and interact with your site: structured data validity, content extractability, page speed, and crawl accessibility. A high Site Score means your MCP server has a discoverable front end backing it up.