# MCP gateway for AI agents

ManageEngine SecureAI gives security teams one control point for AI agent access to MCP servers, with tool-level policies and data loss prevention (DLP) redaction.

## Why AI agents need an MCP gateway

AI agents deliver the most value when they can act on enterprise systems using the Model Context Protocol (MCP), a widely adopted open standard for connecting agents to tools. Each MCP server an agent connects to exposes tools that can read records, update tickets, send messages, or move files so each new connection expands an agent's ability inside the business.

In most environments, those connections are made directly between the agent and the server by the team that built the agent, and often aren't visible to the security team. [AI agent discovery](https://www.manageengine.com/secure-ai/ai-agent-discovery/) can surface which agents exist and which MCP servers they use, but knowing that a connection exists does not solely restrict what an agent can do through it. Without a common layer in front of those servers, security teams have no consistent way to limit an agent to the tools its task requires, keep sensitive data hidden, or produce a record of agent access that satisfies an auditor. An MCP gateway addresses this by placing a single control point between agents and the servers they call.

## What is an MCP gateway?

An MCP gateway is a control point that sits between AI agents and the MCP servers they connect to, so that agent requests to MCP tools pass through a single layer where access can be decided and the data inside those requests can be inspected. This gateway enables requests that would otherwise travel straight from an agent to a server to be evaluated against access and DLP policies.

[SecureAI](https://www.manageengine.com/secure-ai/ai-agent-discovery/)'s MCP gateway works alongside its discovery and [access governance](https://www.manageengine.com/secure-ai/ai-agent-governance/) capabilities. Since the agents and MCP servers behind the gateway are also inventoried, assigned owners, and reviewed through access certification, the policies applied at the gateway reflect access decisions that the organization has already examined and approved.

## How the MCP gateway controls agent access

SecureAI organizes its gateway capabilities around the work security teams need to do. This includes finding the MCP servers agents use, deciding who can use which tools, keeping sensitive data out of tool calls, reviewing what the gateway has done, and to tying all of it back to governed, owned access.

### One governed entry point for MCP servers

MCP servers tend to accumulate one integration at a time, and every server that agents connect to directly becomes another endpoint security teams have to track and secure on its own. With SecureAI, agents reach approved MCP servers through a gateway, so each new server comes under the same policy controls as the servers already in place instead of adding to a growing list of exceptions.

The gateway relies on the identity systems the enterprise already runs, which ties agent access to identities the organization already manages and reviews. Security teams can also give each group of agents only the servers and tools its work calls for, so least-privilege access is set where agents connect rather than left to each individual MCP server.

### Access control policies for MCP servers and tools

Access policies in SecureAI decide whether an agent request is allowed or blocked based on who is calling and what the call involves. Each policy applies to a selected set of identities, or to all identities by default, and its conditions can reference the time of the request, the IP address and location it comes from, the MCP server being called, the specific MCP tool, and the tool type. When a request matches a policy, SecureAI either permits the request and records it for audit, or blocks the request at the gateway.

### Data loss prevention for MCP tool calls

DLP policies in SecureAI inspect the content of MCP tool calls, looking at the tool input an agent sends, the tool output a server returns, or both, and they act when that content contains values the policy defines. A DLP policy can block the request, or it can redact and allow, which replaces the matched content with configurable redaction text and lets the rest of the request continue. For example, a team can redact customer identifiers only in output returned from one MCP server while leaving requests to internal tools unchanged.

### Gateway monitoring and reporting

Security and operations teams can see how agents use MCP servers without piecing together logs from each server on its own. Prebuilt reports show which agent identities are calling which tools, where servers are slow or returning errors, and which MCP servers have gone unused and can be retired, so the gateway also serves as a view into the health and sprawl of the MCP estate.

For compliance teams, the gateway keeps a record of how access and DLP policies have been applied to MCP traffic. That record gives auditors evidence of the controls in place on agent access to MCP tools, rather than a description of how those controls are meant to work.

## Benefits of routing agents through an MCP gateway

- **Fewer unmanaged connections to enterprise tools:** Agents reach approved MCP servers through a governed entry point instead of connecting to each server directly, which leaves security teams with a defined set of connections to defend.
- **Sensitive data removed from tool calls:** Redaction of tool input and output lets agents keep working with internal and third-party tools while the sensitive values a policy defines are removed from what they send and receive.
- **Audit evidence without manual collection:** Policy decisions on MCP traffic are recorded at the gateway, so compliance teams can show auditors how agent access to MCP tools is controlled without gathering logs from each server.
- **Operational visibility into the MCP environment:** Reports on usage, latency, and errors help platform teams spot slow or failing MCP servers and retire the servers that agents no longer use.

## FAQs

### 1. What is an MCP gateway?

An MCP gateway is a control point between AI agents and the Model Context Protocol (MCP) servers they call. Agents connect to the gateway instead of the server directly and the gateway applies access and data policies to each request and records the outcome. In SecureAI, the gateway exposes only the tools each group of agents is approved for and applies access and DLP policies to the requests that pass through it.