Most teams don't have one API. They have five copies of it. There is the design file, the docs site, the mock server the frontend builds against, the test suite in CI, and the monitor that pages someone at night. Each copy drifts on its own schedule, and the gaps between them are where the bugs come from.
Routebase collapses them into one. The OpenAPI spec is the original, and the documentation portal, mocks, contract tests and monitors are generated from it instead of being kept in sync by hand. Publish a change and Routebase diffs your live API against the spec field by field, so a missing property or a changed type shows up as a finding rather than as a support ticket.
Specs get treated like code here. Branch one, open a merge request, and have someone read the breaking-change report before it ships. The docs portal runs on your own domain and cannot go stale, because it is rendered from the same spec. The mock server answers from that spec too, so frontend work starts on day one instead of waiting for a backend.
Every workspace also runs an MCP server, which means an agent in Claude Code or Cursor can design an endpoint, run a suite and publish documentation against the same spec your team uses, under the same permissions.