MCP Proxy
An MCP proxy is an intermediary that sits between an MCP client and an MCP server, able to inspect, filter, modify, allow, or deny tool calls before they reach the underlying server.
Why this matters for AI agents
A proxy at the MCP layer is the natural place to enforce authorization without modifying agent frameworks or tool servers. It is infrastructure-owned and developer-light.
How AgntID relates
AgntID deploys as an embedded MCP proxy—it intercepts every tools/call request, evaluates it against policy, and either allows it with scoped credentials or returns a structured denial.
The static IAM gap
Without a proxy in the MCP path, all tool calls from an authenticated client reach the server. There is no interception point for policy evaluation.
Related phrases
Related terms
Frequently asked questions
What is an MCP proxy?
An MCP proxy is an intermediary that sits between an MCP client and an MCP server, able to inspect, filter, modify, allow, or deny tool calls before they reach the underlying server.
Why is a proxy the right place to enforce authorization in MCP?
A proxy at the MCP layer enforces authorization without modifying agent frameworks or tool servers. It is infrastructure-owned and requires no changes to agent code.
How does AgntID deploy as an MCP proxy?
AgntID deploys as an embedded MCP proxy. It intercepts every tools/call request, evaluates it against policy, and either allows it with scoped credentials or returns a structured denial.
Secure every agent tool call at execution time.
AgntID gives infrastructure teams scoped, ephemeral access control for AI agents without replacing IAM, MCP servers, tools, or agent frameworks.