Show HN: Plaidify – Give AI agents access to any login-protected website

2 points

3 months ago

Every AI agent hits the same wall: the world's most valuable data is locked behind login forms. Bank balances, utility bills, insurance policies, academic transcripts — none of them have APIs. Plaid covers banks for $500+/mo. Everything else? You write fragile Selenium scripts.

Plaidify is open-source infrastructure that turns any login-protected website into a REST API. You drop a JSON "blueprint" into the connectors folder — CSS selectors for username, password, submit, and what to extract — and you get a structured JSON endpoint. No scraper code to write.

It's designed specifically for the AI agent era. The repo includes ready-to-copy integration code for LangChain, CrewAI, OpenAI function calling, and a planned MCP server so Claude/GPT can use it as a native tool.

What's built today: FastAPI with 19 endpoints, JWT auth, Fernet credential encryption at rest, Alembic migrations, 53 tests at 80% coverage, Docker support, CI pipeline. What's NOT built yet: the Playwright browser engine (it returns simulated responses today). We're building in public.

The hardest and most impactful open contribution is the Playwright engine — replacing the stub with real browser automation. Blueprint contributions (write a JSON file for a public test site) are easy first issues.

MIT licensed. Python 3.9+. Self-hosted — credentials never leave your infrastructure.

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