Key points
- MCP is an open standard that lets any compatible AI app connect to any compatible tool or data source.
- It's supported across the major AI platforms, so one integration can work with many assistants.
- Connecting AI to real systems raises the stakes: vet servers, scope permissions, and require approval for actions.
What MCP is
Before MCP, every AI app needed a custom integration for every tool: one connector for ChatGPT and Google Drive, another for Claude and Google Drive, another for Copilot, and so on. The Model Context Protocol replaces that tangle with a single, open standard.
Anthropic introduced MCP as an open-source project in late 2024. It was rapidly adopted across the industry — including by OpenAI, Google, and Microsoft — and in late 2025 moved to a vendor-neutral foundation under the Linux Foundation. Today, MCP support is built into many popular AI assistants, developer tools, and agent platforms.
The common analogy is USB-C: one standard connector that lets many devices work with many accessories.
How it works
MCP has three main pieces:
- Host: the AI app you use — a desktop assistant, a chat app, a code editor, or an agent platform.
- Client: the part of the host that speaks MCP and manages connections.
- Server: a small program that exposes a system — your files, CRM, calendar, database, or ticketing tool — in a standard way.
An MCP server can offer three kinds of things:
| Capability | What it is | Example |
|---|---|---|
| Tools | Actions the AI can call | create_ticket, search_contacts, send_email |
| Resources | Data the AI can read | A policy document, a database table, a file |
| Prompts | Reusable templates | "Summarize this week's support tickets" |
Servers can run locally on your computer or remotely as a hosted service. Remote servers typically use standard OAuth sign-in so access can be granted, scoped, and revoked like any other business app.
{
"mcpServers": {
"helpdesk": {
"url": "https://mcp.example-helpdesk.com",
"auth": "oauth", // sign in; scopes you can revoke
"tools": ["search_tickets", "draft_reply"]
}
}
}
Why it matters for your organization
- Less lock-in: an MCP integration you build once can work with many AI assistants, so you can switch platforms more easily.
- Faster integrations: many software vendors now publish official MCP servers for their products.
- Custom systems, too: a small MCP server can safely expose your own database or line-of-business app — for example, a church management system or an internal knowledge base.
- Foundation for agents: MCP is how many AI agents reach the tools they use.
Practical use cases
- Ask your assistant questions about documents in SharePoint or Google Drive — with your existing permissions.
- Let staff look up customer, member, or donor records in plain English (read-only).
- Draft help-desk replies grounded in the ticket history.
- Generate weekly reports that pull from several systems at once.
- Give developers AI help that understands your codebase and tickets.
Security: what to check before you connect
MCP makes it easy to connect AI to powerful systems — which is exactly why it needs care.
- Only use trusted servers. Prefer official servers from the software vendor or ones your team has reviewed. A malicious server can steal data or manipulate the AI.
- Scope permissions tightly. Use read-only access where possible and dedicated credentials, not an admin account.
- Keep approvals on. Require a person to confirm actions that write, send, delete, or pay.
- Watch for injection. Content flowing through a server (emails, web pages, tickets) can contain hidden instructions. Treat it as untrusted.
- Pin and review versions. Don't let servers auto-update silently; review changes like any other software.
- Log everything. Keep a record of which tools were called, with what inputs, by whom.
Add MCP servers to your AI use register and vendor review process, just like any other software that touches your data.
How WHU AI helps
We help organizations choose and configure trusted MCP servers, and we build custom, security-reviewed MCP servers for systems that don't have one yet — with scoped access, approval flows, and audit logging built in. Book a free call about connecting your tools.
Further reading
- Model Context Protocol — official documentation — introduction, concepts, and specification
- Hugging Face AI Agents Course — hands-on agents and tool use
- DeepLearning.AI short courses — including MCP and agent courses