Glossary · AI and language-model infrastructure
MCP resource
Contextual data an MCP server makes readable through an addressable resource interface.
Definition
An MCP resource can expose file contents, database records, API responses, or other context without presenting the access as an action tool. Resources can be listed or retrieved according to the server's implementation and permissions.
Why it matters
Resources help separate reading approved context from taking an action, which supports clearer permission design.
Common misunderstanding
A resource is not automatically public or persistent; access depends on the connection, server, credentials, and source system.
Related terms
Related system family: Operations & Automation
Sources
- Model Context Protocol architecture overview (opens in a new tab) · Model Context Protocol
Last reviewed July 16, 2026