"Understanding Call Hierarchy in Software Development or Programming" matching MCP connectors:

Pay-per-call agent superpowers: media/video gen, product demos, research, GTM, scraping, compute.

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.

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.

Pay-per-call web scraping for AI agents via x402 on Base USDC. Six tools, no signup.

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.

Do things on live websites: prices, availability, quotes, bookings, anything behind a form or login.

DNS, WHOIS/RDAP, DMARC/SPF, LEI, sitemap, web extract, VAT, QR. Paid per call in USDC, no signup.

Watch web pages, RSS, crypto prices and SEC filings; poll one endpoint for alerts. USDC per call.

Public pages to clean JSON or Markdown, plus bounded site mapping and crawl. Failed calls are free.

Pay-per-call Apify Store analytics with free MCP discovery and x402 payments.

Free SEO, GEO, and AEO audits: analyze any page or domain, AI-crawler access, agent readiness.

111 web-data endpoints across 11 services. Pay per call in USDC via x402.

Capture batches of public web pages in a real browser and download the screenshots as a zip.

Per-call data for agents: graded behavioural science, dark-pattern detection, web fetch, geocode.

Fetch any web page's HTML, AI-parsed JSON, or Google results via the ScrapeUnblocker anti-bot API

Fetch any web page's fully rendered HTML, AI-parsed structured JSON, or Google search results through ScrapeUnblocker's anti-bot scraping API (bypasses Cloudflare, DataDome, PerimeterX, Akamai). Bring your own API key.

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).

Screenshots, PDFs and Markdown from any URL or HTML for AI agents, via the SnapForge API