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MCP Security

Reviewed 19 July 2026 Canonical definition Part of: MCP & Agent Protocol Terms →

MCP security is the discipline of protecting Model Context Protocol deployments from authentication bypass, privilege escalation, prompt injection via tool responses, and unauthorized data access. It encompasses gateway controls, token scoping, audit logging, and runtime threat detection for agent-to-tool communication.

§01 / QUESTIONSterm: MCP Security
Questions

Common questions.

What is MCP Security?

MCP security is the discipline of protecting Model Context Protocol deployments from authentication bypass, privilege escalation, prompt injection via tool responses, and unauthorized data access.

How is MCP Security used in production?

It encompasses gateway controls, token scoping, audit logging, and runtime threat detection for agent-to-tool communication.

Which terms are related to MCP Security?

Closely related concepts include Context Window Poisoning, AI Firewall, MCP Server, Model Context Protocol (MCP). Each is defined in the Prefactor glossary.

§02 / RELATEDnext: where this fits
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Where this fits.

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