The classic bottleneck: backend estimates three sprints for CRUD, auth, and deployment while design wants clickable demos next week.
A mock API with persistent records lets every squad work against the same contract. When the real service ships, you change the base URL and keep the client code.
What to mock first
Start with the happy path: list + detail + create for your core entity. Add error and delay simulation when you test resilience on Pro plans.
Export OpenAPI from the portal so mobile and web share one source of truth.
Checklist
Sign up → copy API key → run the collection wizard → paste the bundle into Postman → wire the UI. The portal dashboard includes a Getting started guide for new tenants.
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