ProposalWriterAI v1.0.0

ProposalWriterAI
ProposalWriterAI is a full-stack SaaS app for generating client-ready business proposals with Claude AI. Users can sign up, upload company knowledge documents, generate proposals from a short form, review prior proposals, and export proposals as formatted PDFs. (For more information, the ReadMe is available)

Live app: https://proposal-writer-ai.vercel.app/

Features
AI proposal generation - Claude writes complete proposals from client details, your solution, pricing, and company context.
Company document grounding - Users can upload PDF or TXT documents such as service descriptions, pricing sheets, and case studies.
Proposal history - Generated proposals are saved per user and can be opened again later.
PDF export - Proposals are converted to branded, client-ready PDF downloads with ReportLab.
Supabase authentication - Email/password signup and login with bearer-token protected API routes.
Private user data - Documents, proposals, and subscription records are scoped by the authenticated Supabase user.
Landing, pricing, and legal pages - The frontend includes the marketing page, pricing cards, FAQ, privacy, terms, and security modal content.
Stripe backend support - The API includes checkout-session, webhook, and subscription-check endpoints for a Pro subscription flow.
Tech Stack
Frontend
React 19
Vite 8
Plain CSS in frontend/src/index.css and frontend/src/App.css
react-hot-toast for notifications
Supabase JS client dependency available in the frontend package
Vercel deployment
Backend
FastAPI
Uvicorn
Anthropic Claude API
Supabase Auth and PostgreSQL
PyPDF2 for PDF text extraction
ReportLab for PDF generation
Stripe Python SDK for subscription endpoints
Render deployment

ProposalWriterAI v0.1.0-prototype

ProposalWriterAI
An AI-powered SaaS platform that helps B2B sales teams create professional business proposals in minutes.
First Prototype