"Free PostgreSQL Database Solutions" matching MCP connectors:
Matching Connector Tools:
500+ pay-per-call tools + skill packs. USDC + USDG on 12 chains, or free via proof-of-work.
Check how much real depth Armasourcing's vetted Filipino virtual assistant pool has for a specific role, skills and timezone, and understand how hiring and engagement work. Returns aggregate pool statistics only, no candidate names, no profiles, and no pricing, and ends in a free discovery call booking.
Zillow MCP for AI agents: property data, Zestimates & listings — 300+ fields per home. Free tier.
One MCP endpoint over 69 public PPN APIs: search_apis to discover, execute_api to call. Free tier.
Free walking tours & activities in 1,000+ cities — live availability, ratings & booking links.
Docs: https://docs.keenable.ai/mcp-server Keenable is a free, remote MCP server that gives agents access to the web index. Search the web with ranked results and date/site filters, then fetch any indexed page as clean markdown. Works out of the box with no account or API key.
Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.
Universal pay-per-call tool API for AI agents. Web search, price feeds, hive memory, LLM routing, code sandbox. Free tier (10 calls/day, no signup). x402 payments on Base + Solana.
Free mechanical checks for AI text: unnamed counts, dangling references, bad arithmetic, misquotes.
Open, verified shop database for AI agents: products, offers, price comparison, trust and coupons.
Check whether a real-world fact can be verified before an agent acts on it. Free, no auth.
Free search across ~35,000 agent tools (x402 bazaar + MCP registry) by plain-language need.
Free AI visibility (GEO/AEO) audit: can ChatGPT, Claude and Perplexity find and cite your website?
AI Citability across AEO, GEO, SEO & MCP: is a brand cited & callable? Free Lite Reflection.
Hardware end-of-life dates by part number, each linked to the vendor's own bulletin.
Free AI-powered DXP tools by Oshyn: GEO & Reliability scan, Choose New DXP and Estimate DXP Budget.
Free public MCP server for Kapruka.com — Sri Lanka's largest e-commerce platform.
Wikipedia, Wikidata and Wiktionary as clean JSON, not HTML. 1.9M searchable. Free, no auth.
Official-source China bank card offer facts for agents; free bank list and paid factual search.