AI SEO Glossary
What is MCP?
TL;DR — MCP (Model Context Protocol) is an open-source protocol released by Anthropic in November 2024 that standardizes how large language models connect to external data sources and tools. Adopted by Anthropic, OpenAI, Google, and a wide developer-tooling ecosystem.
Definition & scope
Model Context Protocol (MCP) is an open-source protocol released by Anthropic in November 2024 that standardizes how large language models connect to external data sources and tools. An MCP server published by a brand exposes structured first-party data — catalog, inventory, sizing, documentation — that an LLM can query directly instead of inferring the same information by crawling pages. Adopted by Anthropic, OpenAI (announced 2025), Google (Gemini), and a wide developer-tooling ecosystem.
For consumer eCommerce, the return on a custom MCP server is usually marginal — web grounding already covers most use cases. For B2B, technical, and research-heavy categories where LLMs are the buyer's default research surface, an MCP server can move a brand from one of many cited sources to the first-party data provider the LLM asks first. Full scoping on /mcp-for-ecommerce.
Where you'll encounter it
In Claude Desktop and Claude Projects, where users wire up MCP servers to bring their own data into the chat. In Cursor and other AI IDEs where MCP brings docs, repos, and tooling into the model's context. In SaaS vendor product copy ramping into 2026, where “MCP-ready” is becoming a checkbox alongside “has an API.”
For a brand, the strategic question is whether your buyers do their research in an AI chat (B2B technical, supplements, complex configurables) — in which case an MCP server materially changes citation patterns — or whether they research on classic SERPs (commodity DTC, fashion, impulse buys) — in which case the traditional AEO work is the higher-leverage bet.
Related terms
- AP2 (Agent Payments Protocol) — the payment counterpart to MCP's data layer.
- Agentic commerce — the surface MCP servers enable.
- ClaudeBot — Anthropic's training-data crawler; complementary to MCP.
- llms.txt — the editorial site map most MCP-aware tools also read.
Related services
- MCP for eCommerce — scoping, server design, and ops.
- Agentic Commerce — the broader engagement MCP work sits inside.
FAQ
Who created MCP?
Anthropic. The protocol was released open-source in November 2024. The spec lives at modelcontextprotocol.io and is governed by an open working group with vendor and developer participation.
Which engines support MCP?
Anthropic (Claude desktop, Claude Projects, Claude Computer Use), OpenAI (announced 2025), Google Gemini, and the broad developer tooling ecosystem (Cursor, Windsurf, Zed, and many IDE / agent products). Adoption is the broadest of any cross-vendor AI-data protocol.
What does an MCP server expose?
Structured first-party data — catalog, inventory, sizing, documentation, pricing, availability — that an LLM can query directly via the protocol's tools/resources/prompts primitives. The server can be hosted on your infra, behind your auth, and answers only the queries you support.
Does my eCommerce store need an MCP server?
For most consumer eCommerce, no — web grounding via crawlers covers the use cases. For B2B, technical, and research-heavy categories where LLMs are buyers' default research surface, an MCP server can move you from one of many cited sources to the first-party data the LLM asks first. See /mcp-for-ecommerce for scoping.
How is MCP different from AP2 or ACP?
MCP is for data and tool access — letting an LLM query your catalog, your docs, your APIs. AP2 (Google) and ACP (OpenAI) are for agentic payments — letting an AI agent complete a purchase on the user's behalf. Different layers; both relevant to agentic commerce.
How long does an MCP server take to build?
Depends on data complexity. A thin server exposing a curated product catalog and stock can ship in 2-4 weeks. A full-coverage server with auth, write tools, and SLA-grade ops is a multi-month engineering engagement.
Scope an MCP server.
We do MCP scoping for B2B catalogs, complex configurables, and AI-first product categories. Call 888-982-8269.