"An overview of knowledge graphs" matching MCP connectors:
Matching Connector Tools:
Pay-per-call agent superpowers: media/video gen, product demos, research, GTM, scraping, compute.
Scrape and extract application reviews from both the Google Play Store and the Apple App Store.
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.
Connect AI to millions of laws and court cases with the Lawstronaut MCP.
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.
Product search and price comparison for AI agents. Search 100M+ products across thousands of retailers by text or image, compare live offers and prices, and turn any merchant URL into structured product data. No API key required to start; add one for unlimited use and affiliate commission.
Do things on live websites: prices, availability, quotes, bookings, anything behind a form or login.
Verify public marketplace, retail, classified, and auction listings before an agent relies on them; return source-supported facts or explicit safe-failure states.
Track prices & price history on any online shop, with alerts and an API
Know whether an AI agent should REUSE or REFETCH a URL before retrieving it again.
Resolve sourced merchant facts and safe actions before an agent acts.
Diffbot MCP — Knowledge Graph company enrichment + web content extraction (diffbot.com)
Web search, page reading and structured extraction for AI agents, with strong RU coverage
Capture batches of public web pages in a real browser and download the screenshots as a zip.
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.
Web search, AI agent, and content extraction via You.com APIs
Scores a website's AI technology adoption using BuiltWith data.
Check AI crawler robots.txt policy and monitor public-site policy, sitemap, and llms.txt changes.
Twitter/X, Instagram, Reddit & TikTok data for AI agents. Billions of posts. No API keys.