Originally published on bridge.ls/blog 70% of large SaaS brands now ship a remote MCP server.. The other 30% are about to find out what happens when their competitors become agent-callable and they don't. If you're a SaaS founder or CTO who has been putting off MCP because the build looks expensive — multi-tenant auth, transport, hosting, credential management, the whole stack — this post is for you. We're going to take your existing OpenAPI spec and turn it into a live, hosted, agent-callable MCP server in about 10 minutes. Free tier. No credit card. No protocol code. Why ship one now The case for MCP keeps getting harder to argue against. Anthropic, OpenAI, Google, and Microsoft all natively support it. Over 10,000 MCP servers existed by early 2026.. ChatGPT, Claude, Cursor, and every serious agent runtime can connect to a remote MCP endpoint with two clicks. For SaaS companies, the framing is competitive: the first product in each category that ships an agent surface owns the agent traffic.…