MCP Gateway & Security Setup

New

One control point for every agent, tool, and token.

The Model Context Protocol is now the open standard connecting AI agents to your tools and data — and any production MCP deployment ends up behind a gateway that becomes the single most critical security boundary in your agent stack. We design and deploy that gateway with authentication, authorization, sanitization, and observability enabled by default.

An MCP Gateway & Security Setup routes all Model Context Protocol traffic through one hardened proxy that authenticates agents (OAuth 2.1 + mTLS), authorizes tool calls with default-deny policy-as-code, validates and sanitizes inputs and outputs to block prompt injection, manages secrets outside the agent context, keeps a registry of approved servers, and centralizes audit logging. Typical setup: 2–4 weeks.

Why Now

MCP standardizes how agents talk to tools, but it deliberately leaves governance out of scope: each server chooses whether to implement auth, the authorization server is out of spec, and there is no central place to enforce policy or audit usage. That governance gap is dangerous once agents can reach sensitive systems — a single poisoned document can escalate to remote code execution. The 2026 consensus is unambiguous: centralize controls at a gateway rather than scattering security logic across every server.

OAuth 2.1

Minimum required auth for HTTP-based MCP servers since the 2025-03 spec

MCP Specification

Default-deny

Recommended posture for every tool call, enforced with policy-as-code (OPA / Cedar)

Cloud Security Alliance, 2026

Single boundary

A gateway is the single most critical security boundary in an agent stack

MCP security guidance, 2026

What You Get

Centralized MCP gateway fronting all tool calls
OAuth 2.1 with PKCE and mutual TLS for internal traffic
Per-tool RBAC with a default-deny policy engine (OPA or Cedar)
Input schema validation and output PII redaction to block prompt injection
Secrets moved out of agent context into a managed store
Registry of approved MCP servers with version pinning
Centralized audit logs correlating prompts, tools, and actions
Sandboxed server execution and egress restrictions

How It Works

1

Threat Model & Inventory

We catalog your MCP servers, the systems they reach, and the data classes involved, then model the attack surface.

2

Gateway & Authentication

We deploy the gateway as the mandatory boundary and enforce OAuth 2.1 + mTLS with audience-bound tokens.

3

Policy & Sanitization

Default-deny policy-as-code for tool calls, plus strict input/output validation and PII redaction against prompt injection.

4

Observability & Supply Chain

Centralized audit logging and anomaly alerts, an approved-server registry, version pinning, and sandboxed execution.

Who It's For

  • Teams running more than a few MCP servers
  • Enterprises connecting agents to sensitive or regulated data
  • Platform teams standardizing agent infrastructure
  • Anyone hardening an existing agent stack for production

Frameworks & Tools

Model Context Protocol (MCP)OAuth 2.1 + PKCEmutual TLSOpen Policy Agent (OPA)CedarDocker MCP GatewayOpenTelemetryHashiCorp Vault
Timeline2–4 weeks
PricingScoped per server fleet size

What This Delivers

Representative outcomes based on typical engagements and industry benchmarks.

1

Central control point governing every agent tool call

OAuth 2.1

Plus default-deny policy enforced across the fleet

100%

Tool calls authenticated, sanitized, and audit-logged

Security stopped being per-server guesswork. Every tool call now goes through one gateway with real policy and a full audit log.
Platform Engineering LeadRepresentative enterprise engagement

Frequently Asked Questions

Securing each server distributes the work across every developer, guarantees inconsistency, and leaves fragmented coverage. A gateway implements the controls once at the trust boundary the MCP architecture already has — for more than a few servers it reduces cost and improves coverage.

It inspects every tool call and response, validates inputs against a strict schema, and redacts sensitive data from outputs before they reach the model context. That strips malicious instructions hidden in tool responses — the primary indirect prompt-injection vector.

Yes. The gateway sits between your agents and their MCP servers, so agents keep calling tools as before while authentication, authorization, sanitization, and logging are enforced centrally.

Most gateways are production-ready in 2–4 weeks, including auth, default-deny policies, sanitization, audit logging, and the approved-server registry with version pinning.

Ready to start your MCP Gateway & Security Setup?

Typical timeline: 2–4 weeks. Tell us about your situation and we'll scope it in a free call.

Get Started Today