rate-api / demos Star 1 Code Issues Pull requests 7 production-ready demos: AI mortgage agents (GPT-4/LangChain), React widgets, Chrome extensions (Zillow/Redfin/Projection Lab), webhook monitors. 34,930 rates from 2,918 US credit unions. Zero-dependency CLI to full TypeScript. Mock modes included. Fork, learn, ship. react nodejs webhooks sdk ai mcp webhook discord-bot fintech openai mortgage real-time-data ai-agents mortgage-rates api-demo credit-union fintech-api credit-unions langchain rate-comparison Updated Feb 3, 2026 JavaScript