Show HN: Opencommerce – OpenRouter for commerce, one API for AI agents to buy

If you're building an AI agent that buys things for its users, opencommerce by Agentcard gives it one buy tool: search, cart, checkout and order tracking across 5,000+ online stores, through a single endpoint. No merchant integrations to build and no agent browser to run. Agentcard places the order once the user approves.

It's fast: it searches catalogues and makes a purchase in under 20 seconds.

We test the purchase flow at each monitored store, from search to checkout, and the results are public: https://opencommerce.sh/?utm_source=hn&utm_medium=community&...