MCP Gateway Pro

Managed MCP Server Aggregator & Proxy

Connect AI agents to any combination of MCP servers through a single managed endpoint. Built-in auth, rate limiting, routing, and analytics — so you can focus on building agents, not infrastructure.

Get Started Free
$0.005 / request + $0.10/hr base

What it does

MCP Gateway Pro is the "API Gateway for the agent era." An AI agent (Claude, Bedrock Agent, custom LangChain/Strands agent, etc.) connects to a single AppXen gateway endpoint. When the agent calls tools/list, Gateway Pro aggregates tools from all registered upstream MCP servers and returns a unified catalog.

When the agent calls tools/call, Gateway Pro routes the request to the correct upstream server, handles auth, enforces rate limits, and meters the request for billing.

Architecture

Agent Layer
Claude Bedrock Agent LangChain Strands Custom
MCP over Streamable HTTP
MCP Gateway Pro
Auth → Rate Limit → Router → MCP Client Pool
Metering ← Analytics ← Logging
Servers & Extensions
GitHub
MCP
Stripe
REST API
CloudWatch
Extension
RAG Engine
Built-in

REST API Proxy

New

Turn any REST API into MCP tools. Provide an OpenAPI spec (3.0, 3.1, or Swagger 2.0) and Gateway Pro auto-discovers endpoints, generates tool definitions, and handles HTTP translation at runtime. Your agents call MCP tools — the gateway makes HTTP requests. No custom server code needed.

OpenAPI auto-discovery Up to 200 endpoints per API Bearer & API key auth Path, query, body params
Read the docs

Extensions & Built-in Services

New

Extend your gateway with pre-built integrations that run as managed MCP servers. Enable extensions like AWS CloudWatch from the gallery, provide your credentials, and the gateway handles the rest. Built-in services like RAG Engine and Media Storage are always available with zero configuration.

One-click enable Encrypted credential storage Isolated subprocess execution Growing extension gallery
Read the docs

Key Features

Unified Authentication

API key or OAuth/OIDC. Gateway handles upstream credentials so agents never see them.

Rate Limiting

Token bucket per tenant. Protect upstream servers and control costs.

Real-time Analytics

Request volume, latency P50/P95/P99, error rates, top tools by usage.

Tool Aggregation

Namespaced tools from multiple MCP servers, served from a single endpoint.

Gallery & Extensions

Browse MCP servers and extensions from the gallery. One-click setup for GitHub, Neon, CloudWatch, and more.

Media & Storage

Built-in file upload, cloud storage, and media management accessible as MCP tools.

Example Request

# Agent calls a GitHub tool through Gateway
POST /mcp/tenant_abc123
{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "github/create_issue",
    "arguments": {
      "repo": "appxen/gateway",
      "title": "Bug: rate limiter not resetting"
    }
  }
}

Pricing

Per request $0.005
Server hour $0.10/hr
Media storage $0.50/GB
Minimum No minimum

Specs

Transports SSE, Streamable HTTP
Latency <50ms P95
Uptime SLA 99.9%
Max servers Unlimited
REST endpoints 200 per API

Resources

Documentation Get Started Free AWS Marketplace Contact Support

Ready to get started?

Deploy MCP Gateway Pro in minutes. Usage-based pricing, no upfront commitment.

Get Started Free Read the Docs