Testing Zerker AI Gateway: Managing Agent Calls Like Plumbing

I spent two days trying out Zerker AI Gateway. It's positioned as an AI gateway placed in front of your agent traffic, consolidating messy HTTP calls and MCP requests into one place, so you can log, route, intercept, or bill however you want. The line on their website is pretty interesting: "every agent call, through a door you own." Basically, every agent call goes through a door that belongs to you.