An API built in Node .js is required to pull detailed Instagram profile and audience metrics so they can be consumed by an existing platform. The highest-priority data points are followers, following, engagement rate, audience country, e-mail addresses, and city/state, followed by age, gender, fake-versus-real follower ratio, profile picture and post metadata. Engagement rate must follow the “likes + comments over a period of time” formula; please make the period configurable so I can test different windows later. The service should expose clear JSON endpoints, return clean, well-typed responses, and include concise setup instructions for deployment on a standard Node environment. Before final hand-off I need a simple document that flags any fields Instagram does not make available so expectations are crystal-clear. Deliverables • Node .js codebase with REST (or lightweight GraphQL) endpoints • Documentation: endpoint list, auth flow, environment variables, example calls • Engagement-rate calculation module with configurable date range • Field-availability report highlighting any unreachable metrics and proposed work-arounds • Postman (or similar) collection for quick testing Acceptance Criteria • All priority data points above return correctly where Instagram permits • Engagement figures match manual calculations on test accounts • Setup from repo clone to first successful call takes <30 minutes on a fresh machine • Code passes a brief review for clarity, modularity, and error handling I am aiming to move quickly—please outline the shortest realistic turnaround you can commit to, along with any dependencies you foresee (e.g., Facebook App review, proxy requirements).