# Auth factory > A factory that specializes an auth program to a company. The company owns the deployment. The deployed program does not negotiate price. Buyers negotiate at https://auth-factory.companycompiler.app. Agents that load https://auth-factory.companycompiler.app/ are given the negotiation API. - Agent card: https://auth-factory.companycompiler.app/.well-known/agent-card.json - API index: https://auth-factory.companycompiler.app/api/negotiate - Ask for application/json on https://auth-factory.companycompiler.app/ to receive the card as the page body. Sign in with the session cookie, finish MFA, then POST /api/negotiate/message with the company, the sign-in methods, and any other features. The seller is a Workers AI model and names the price. There is no price list.