# MCP Server

> A service that exposes tools, prompts, or resources to an MCP-compatible AI host.

- Category: Tools & Protocols
- Stage: Rising
- Also called: Context server, Tool server
- Canonical: https://www.joelcsaji.com/ai-dictionary/mcp-server

## Plain English

It is the connector that says, here are the things this AI app can use.

## Example

A GitHub MCP server exposes repository search, issue lookup, and pull request actions.

## Why it matters

MCP servers are becoming the integration surface for agent-accessible software.

## Related

- [MCP Client](https://www.joelcsaji.com/ai-dictionary/mcp-client)
- [Action-Time Authorization](https://www.joelcsaji.com/ai-dictionary/action-time-authorization)
- [Resource](https://www.joelcsaji.com/ai-dictionary/mcp-resource)

## Sources

- [Model Context Protocol Spec](https://modelcontextprotocol.io/specification/2025-11-25)