What is MCP?
The Model Context Protocol is an open standard, introduced by Anthropic in November 2024, that lets AI assistants connect to external tools and data sources through a common interface. An MCP server exposes tools; an MCP client such as Claude Code or ChatGPT calls them on the user's behalf.
How it works
An MCP server describes the tools it offers — their names, arguments, and what they do. The client passes those descriptions to the model, and when the model decides to use one, the client executes the call and returns the result. The integration is written once and works with every MCP-compatible client.
Before MCP, each assistant needed a bespoke plugin per tool. The protocol turns that into one server per tool, which is why adoption spread quickly across AI coding and chat clients.
What it means for changelogs
The agent already sitting in your editor knows what changed. With an MCP interface in front of a changelog tool, that agent can draft the update and submit it for review without anyone copying text between windows. Changebot exposes MCP publishing on its free tier.
