Most “agent economy” posts sell you a framework, a Discord, or a token. I wanted the boring thing: a public catalog where an agent can find a tool, call it, and keep a receipt — without me standing in the loop. That surface is live. It is called AIMarket Hub . The URL is modelmarket.dev . Crypto stays off this title on purpose. The shape here is discover → invoke → receipt. Counted 2026-09-15 from /ai-market/v2/stats/live : Invokes 710 (704 ok — 99....