A serverless API for an app, in TypeScript or C#. Up to five endpoints, request authentication using verified tokens (Firebase Auth or Microsoft Entra ID), a data layer in Cosmos DB (or the storage you name) for up to two data types, tests and a deploy script. You write the endpoint list; I deliver tested code and documentation. Turnaround is 10 business days.

Deliverables

• Up to 5 HTTP endpoints with validation and error handling

• Token verification for requests (Firebase Auth or Entra ID; pick one)

• Data layer for up to 2 data types

Automated tests

• OpenAPI / Markdown docs, deploy steps and README

One round of fixes

Client must provide

An endpoint list: name, inputs, outputs, who can call it

• An Azure subscription for deployment (narrowest access needed), or you deploy from the README

• Auth-provider details (Firebase project or Entra app)

Scope limits

No front end or mobile app work; no ongoing hosting or support. Larger APIs: order more than one listing or send a message first.

All communication and delivery in writing (files, README and a short summary). No calls or meetings.