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Serverless Starter (Vercel functions)

This starter includes example serverless endpoints to support the mobile client: signed upload, transcription workflow, OpenAI proxy, and LinkedIn publish.

Prereqs

Vercel CLI (npm i -g vercel) or deploy to any serverless host that supports Node 18.
Set environment variables in your deployment (see below).

Environment variables

OPENAI_API_KEY
WHISPER_API_KEY (optional, can reuse OPENAI_API_KEY)
LINKEDIN_CLIENT_ID
LINKEDIN_CLIENT_SECRET
STORAGE_ENDPOINT (S3 compatible)
STORAGE_KEY
STORAGE_SECRET
STORAGE_BUCKET
JWT_SIGNING_KEY
INTERNAL_SECRET

Run locally

Install deps: npm install
Start dev server: npm run dev (requires Vercel CLI)

This folder contains API functions in /api:

/api/signed-upload.js - returns signed upload URL (placeholder implementation)
/api/transcribe-start.js - enqueue transcription job
/api/transcribe-callback.js - internal callback to post transcription results
/api/generate-post.js - proxy to OpenAI for generation (replace with real logic)
/api/publish-linkedin.js - publish UGC to LinkedIn using stored user tokens

Notes

These files are starter templates. Replace placeholder logic with secure storage and error handling in production.