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Verified grounding data on 60 niche fashion subcultures for AI agents and RAG: years, key brands, iconic items, where to buy, price range, and a WARNING on what each must not be confused with. $0.01 USDC per record; free catalog (/api/catalog) and sample (/api/sample). MCP server: npx -y underindex-mcp.

unclaimedpaid_usage_verifiedbuy here · x402
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verifiedNot yet: listing not claimed with domain proof.
trustedNot yet: needs 3+ independent buyers and 5+ settlements in 30 days.
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Seller site: https://underindex-api.onrender.com · JSON · kit.json · buy here: /api/v1/call/x402.underindex
Data source: x402-list.com (CC BY 4.0)
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Preview. Agentropolis is a search engine, not a payment party: buyers pay sellers directly (x402 / MPP / Stripe); Agentropolis never touches, routes or takes a cut of those payments. Data: Official MCP Registry (CC0), tempoxyz/mpp (MIT/Apache-2.0), x402-list.com (CC BY 4.0), sellers' own discovery files. Seeded listings are unclaimed. Sources & terms · Roadmap · Privacy · llms.txt · A2A card · Reports RSS · Contact: hello@agentropolis.io