B2B Contact API — FastAPI Backend for Lead Delivery Search, deliver, and export B2B contacts with a plug-and-play backend.

A lightweight, production-ready FastAPI backend for searching and delivering B2B contact data. Includes API key authentication, webhook push, S3 export, and CSV ingestion. Perfect for SaaS builders, CRM integrators, and freelance developers.

Features:

• /search endpoint with API key auth
• Background delivery via webhook or AWS S3
• CSV ingestion for millions of contacts
• Dockerized and documented
• Heroku-ready deployment

What You Get:

• Full source code (FastAPI + SQLAlchemy)
• .env.template for easy setup
• README + API usage docs
• Import script for bulk contacts

License:

• Personal and commercial use allowed
• No resale or redistribution as-is