"Supabase (open source Firebase alternative)" matching MCP connectors:

Validate startup ideas with behavioral evidence — not opinion. Demand Discovery AI™ is a sales-agent MCP that answers founders' questions about the validation framework, the four data-signal categories (Search & attention, Conversation & pain, Adoption & spend, Capital & hiring), the Demand Score™, and the Build/Pivot/Kill verdict™. Includes 7 tools: ask a free-form question, get the validation framework, get product details, explain demand signals, compare validation approaches, get data-source

Score, validate, and pressure-test startup ideas with AI from Claude or any MCP agent.

Electronic component sourcing, BOM management, and PCB design workflows.

Share prototypes as private links clients open without an account, attach specs, read comments.

Create and run surveys by chatting. Respondents just open a link — no AI, no account.

Real-time product data across 450+ retailers — look up any UPC for prices, images, and margin data.