Question from a noob who’s never used openrouter: how do you actually do stuff with it other than chatting? Their website says it’s a unified interface for every model, but then they show a list of “most popular agents” (not models) that include things like “Codex” and “Claude Code”. Which implies I’m using openrouter to access other agents/harnesses, not just models. At which point what is openrouter doing for me?

I’d naively expect openrouter to be a thing that ships with its own agent/harness and lets you pick the model that requests are sent to. But the website implies that’s not what’s happening.