If Registry is ‘what exists,’
Gateway is ‘what's allowed.’
Every server in Horizon sits behind a gateway. This is the control plane that enterprises actually need.
Tool access is not a binary.
It's a policy surface.
When you're at the center of the ecosystem, you learn quickly that the questions are always the same: Who can call this? Under what conditions? Using which credentials? With what audit trail?
Horizon answers those questions at the platform layer, not in prompts and hope.
Access Control
The control plane enterprises actually need
Role-based access control down to the tool level. Tie access to identity provider roles and groups.
Separate permissions for discovering a server, using it, and modifying it. Granular control over each action.
Authentication handled at the gateway. Your underlying systems stay protected behind proper credential management.
Every access attempt logged. Know who tried to access what, when, and whether they were allowed.
The Reality
You can't prompt-engineer your way out of operational risk
Most enterprises are practicing “vibe governance.” They hand agents powerful tools—like the ability to bill a customer—and then write a polite note asking the agents to use those tools wisely.
Gateway turns MCP tools into governed capabilities.
The permission model that makes a human effective can make an agent reckless. Gateway ensures your agents only have access to exactly what they need, nothing more.
Add governance to your MCP servers
Free tier to start. No credit card required.