Academy
What is an MCP server?
Glossary · AI agent and machine identity security
Short answer
An MCP server is a service that gives AI agents tools and data through the Model Context Protocol, usually with credentials behind it.
Why it matters
Every connected MCP server is a place where authority enters. The agent asks, the server acts with its own credentials.
Servers are often added by individuals and then forgotten, which leaves doorways nobody owns.
What it looks like
A server that lets agents search a company wiki and write to a ticket system, running with one shared token for both.
In nerl0
MCP servers appear as part of the map, with the credentials behind them and what those can reach. See the page on MCP servers. See MCP servers.