# Zorkolos Data > Index of the Russian .ru zone: which live websites accept payments online, what they sell, in which niche and at what prices. Built by crawling the public pages of all ~6 million .ru domains; verdicts come from a signature detector (payment providers in page code) plus AI classification. Open to AI agents through an MCP server and to people through a web cabinet and exports. Facts for agents: - MCP endpoint (Streamable HTTP, JSON-RPC 2.0): https://mcp.zorkolos.ru/mcp - Protocol revisions served: 2026-07-28, 2025-11-25, 2025-06-18, 2025-03-26 - Tools: find_sites, list_niches, domain_card, check_domains - Auth: free tier without a key, rate limited per IP; optional API key as Authorization: Bearer raises the limits - Data language: Russian. Send query words in Russian. - Verdict basis: kassa (payment provider embedded in page code), link (link to a payment page), intent (indirect signals only). Use verified_only=true for provable facts. - Every domain lookup answers with a state (classified, unknown, dns_dead, queued, parked, refused, blocked, redirect, stopped) instead of an empty result. ## Docs - [For AI agents](https://zorkolos.ru/agents): how to connect (Claude, Cursor, any MCP client), tool reference, limits - [Full tool reference](https://zorkolos.ru/llms-full.txt): tool descriptions, JSON schemas, data model, examples - [MCP server card](https://zorkolos.ru/.well-known/mcp/server-card.json): machine-readable description of the server - [About our crawler](https://zorkolos.ru/bot): ZorkolosBot user agent, robots.txt policy ## Optional - [Home](https://zorkolos.ru): the dataset for people - exports, change feed, pricing (Russian) - [Sitemap](https://zorkolos.ru/sitemap.xml)