One agent is useful. Nine agents on a shared hub is a different thing entirely. Keystone builds a single core hub for your business — the data layer and the integrations into the tools you already run — and every agent bolts on top of it.
That's where the economics turn. Each new agent costs less than the last, because the foundation it needs already exists. The tenth agent costs a fraction of the first. You're not paying to lay the plumbing again — you're adding intelligent automation to a hub that's already standing.
This is what separates Keystone from a one-off build. A single agent from a freelancer solves one problem and stops. A hub compounds: every agent makes the next one cheaper, and every agent makes the whole operation smarter.