$git clone https://github.com/wellknownmcp/cortex-gatewayFederated MCP gateway: one OAuth 2.1-protected, spec-compliant MCP server in front of all your apps. Backends stay plain HTTP (~120-line contract) or proxied native MCP servers with a per-user token vault. Scope-filtered tools, live discovery, audit trail. Give agents curated, governed access to your whole stack — one URL, one token.