"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:

Russian company lookup (EGRUL/INN), Cyrillic search, RU page to Markdown. Pay per call in USDC.

Deterministic AI agent microtools, no accounts/API keys. fetch_extract: 98% token cut. 38 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.

Clean YouTube transcripts for agents: single videos, channels, playlists, plus AI caption cleanup.

Connect AI to millions of laws and court cases with the Lawstronaut MCP.

CatchAll is a web search API built for comprehensive event retrieval — not ranked results, but all matching records.

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 — 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.

Given a URL, returns title/description/preview-image/site_name from its OpenGraph/meta tags.

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

Track prices & price history on any online shop, with alerts and an API

Web reader for AI agents — output ~4x smaller than raw HTML. Card API key or x402. Free tier.

Search newly registered, expired, aged, active, deleted and for-sale domains, plus WHOIS and DNS.

Evidence-backed public business research for agents with compact, pageable output.

An MCP server for generating images from HTML & CSS or screenshots of URLs using htmlcsstoimage.com.

Capture a web source, or seal a hash you hold, into a signed receipt anyone can verify offline.

The observation layer for AI agents. Outrings provides deterministic web intelligence through MCP, transforming websites into structured, evidence-backed signals that AI systems can inspect and trust.

Turn any URL into clean Markdown and structured data. Scrape, crawl, search and extract.

Solve reCAPTCHA v2/v3, hCaptcha, Cloudflare Turnstile and image captchas. Platform-hosted, no creden