Give every agent exactly
the tools it needs — nothing more.
Remix combines tools from across your MCP servers into a single, scoped endpoint for each team. Your engineering agent sees GitHub and PagerDuty. Your sales agent sees Salesforce and Slack. Nobody sees what they shouldn't.
The Problem
AI agents don't need access to every tool
Your GitHub MCP server has 30 tools. Your Jira server has 20. Your Salesforce server has 40. Connect an agent to all three and it sees 90 tools, most of which it should never touch.
More tools means more context pollution, more surface area for mistakes, and more risk. An engineering triage agent doesn't need CRM write access. A sales assistant doesn't need production database queries.
The permission model that makes a human effective can make an agent reckless. Remix servers fix this at the infrastructure level.
Examples
Same servers, different agents, different boundaries
Every team gets a remix shaped to its job. The tools an agent can't see don't just fail — they don't exist.
Triages incidents and manages tickets — can't wander into billing or CRM no matter what it's asked.
Pulls pipeline context and pings the team — physically can't touch production infrastructure.
Searches tickets and knowledge base, reads customer data — write access isn't hidden, it doesn't exist.
How It Works
Three steps to a scoped agent endpoint
Pick your servers
Pull from any MCP server your org already runs — hosted, external, first-party, third-party. Up to 10 per remix.
Draw the boundary
For each server, choose exactly which tools the agent can see. Everything else is gone — not restricted, removed. When servers change upstream, your remix stays in sync automatically.
Ship one URL
Your remix gets a single endpoint with auth, access control, and audit logging baked in. Hand it to Claude, Cursor, or any MCP client and move on.
Ship-Ready
Every remix is a production MCP server.
Combine five servers that each have a create_issue tool? Remix namespaces them automatically so agents always call the right one.
Every remix runs behind Horizon Gateway— same auth, same access control, same audit trail as every other server in your org. Your agents never touch the underlying credentials.
Include or exclude individual tools, prompts, and resources from each server. Change the mix any time — the endpoint URL stays the same.
When a backend server ships new tools or deprecates old ones, your remix reflects the change on the next request. No redeploy, no manual sync, no broken clients.
Native
Part of the platform, not bolted on
A remix isn't a workaround — it's a first-class server in Horizon. It shows up in Registry, runs through Gateway, and can pull from anything you've deployed.
Build your servers with FastMCP, the framework behind 70% of MCP servers worldwide. Compose the right mix for each team. Ship it. One platform handles the rest.
Give your agents the right tools — and nothing else
Free to start. No credit card required.