Sois is an agent-native business operating system. It gives Claude, ChatGPT, Gemini and any MCP-capable agent a complete business system it can operate: finance and accounting, CRM and sales, documents, communications, HR, warehouse and customer support. You describe the outcome, such as "invoice Acme and chase it in 14 days if unpaid", and your agent does the work across every module. Every request passes through a permission layer, so an agent can only use the tools and records its user is allowed to, and every action is logged. Developers can build agent-native apps for the Sois marketplace and earn from usage, and enterprises can launch their own branded network on the platform. Free to start, bring your own agent, no vendor lock-in.