Glossary
What is an MCP server?
An MCP server is a program that exposes a tool's data and actions to an AI assistant through the Model Context Protocol. The assistant, such as Claude or ChatGPT, can then read records and take steps in that tool, in plain language, without custom code for each task.
Published by Sellinger AI. Numbers and settings checked on 19 October 2026 against the fact register. Report an error.
How is an MCP server different from an API?
An API is built for programmers. Someone writes code that calls an endpoint. An MCP server describes its tools in a way an AI assistant can read, so the assistant decides which tool to call from what you ask. The server often sits on top of the same API, with permissions and a list of allowed actions.
| REST API | MCP server | |
|---|---|---|
| Who calls it | Your code | An AI assistant |
| How you use it | Write requests | Ask in plain language |
| Setup | Keys and code | Connect once, approve access |
What can you do with one?
- Ask for a summary of last week's replies.
- Find leads that match a description and add them to a campaign.
- Review what is waiting for approval and approve it.
- Check which accounts need to be reconnected.
What should you check first?
Look at which actions the server allows, whether it can write or only read, and how access is granted and revoked. A server that can send messages deserves the same controls as a person who can.
How Sellinger handles it
Sellinger has a hosted MCP connector with 43 tools for Claude and ChatGPT. They cover the same work you do in the app: find and manage leads, read conversations, check campaigns, handle approvals. Ready made prompts are in the MCP recipes, and the MCP page explains how to connect.
Sellinger also has a REST API with webhooks, available from the Full Stack bundle up. The MCP connector does not replace it. They serve different callers.
Common questions
Is MCP only for Claude?
Can an AI assistant send messages through MCP?
Do I need to code to use it?
Sources and method
Sellinger hosted MCP connector tool count (43), from the fact register, checked 19 October 2026.
Related: Model Context Protocol (MCP), Sellinger MCP connector, MCP recipes, Sales API.
