"Free PostgreSQL Database Solutions" matching MCP connectors:
Matching Connector Tools:
An MCP server that gives any LLM or agent clean YouTube transcripts on demand: a single video, a whole channel, or a playlist, plus AI cleanup of auto-generated captions. API-key auth, credit-based, same backend as the public v1 API. Get a free API key with 25 free credits at youtubetranscriptdownload.com/account.
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.
Pay-per-call web scraping for AI agents — no signup, no API keys, just USDC micropayments via the x402 protocol on Base. Six tools: scrape webpages, extract structured data, capture screenshots, parse metadata, manage browser sessions, and run workflows. Runs on Cloudflare Workers with Browser Rendering. Free tier: 10 calls per wallet per 30 days.
Web tools for agents: fetch URL as markdown (free MCP) + x402 scrape, links, AI JSON, snapshot.
Free remote MCP server for fetching public web pages through a rotating proxy pool.
Microlink MCP — wraps Microlink API (free tier, no auth required)
Clean web reader for AI agents. Free remote read tier, optional x402 pay-per-call. No API keys.
URLhaus MCP — wraps abuse.ch URLhaus malware URL database (free, no auth)
Free SEO, GEO, and AEO audits: analyze any page or domain, AI-crawler access, agent readiness.
Pay-per-call Apify Store analytics with free MCP discovery and x402 payments.
Website intelligence audits for AI agents: free preview plus x402-paid Agent Readiness scoring
8 pay-per-call web intelligence tools for AI agents: detect a site's tech stack and track stack changes, check domain health, extract structured data or clean markdown from any URL, turn sitemaps into knowledge bases, analyze Shopify and Zid stores. Free discovery + pricing_info; paid calls $0.01-0.02 in USDC on Base via x402 — pay only for successful runs.
8 pay-per-call web intel tools over MCP. Free discovery, calls settle in USDC on Base (x402).
Free public web freshness and response-metadata checks for AI agents.
Free technical-SEO audit MCP: crawl a site, run checks, return an LLM-ready shareable report.
Clean product data from any URL. Schema.org + AI extraction. 200 free calls/month.
URL to clean markdown for LLMs: a polite, robots.txt-respecting web reader. Free, no API key
smart-data-extractor MCP server on Cloudflare Workers · REST + MCP JSON-RPC · free tier
URL intelligence for AI agents and developers. 16 tools, 25 signal weights, 20 free checks.
Instant web publishing for AI agents. POST HTML, get a live URL. No account needed. Publish, update, and delete websites via MCP or REST API. Free tier includes 5MB sites with 24-hour expiry. Pro tier offers permanent hosting.