"SEO" matching MCP connectors:

Duo Data Utilities: IBAN, ISIN, VAT and Tax ID, Barcode, Timezone, Geo APIsA

com.duoleads.api

IBAN, ISIN, VAT/tax ID, GTIN validation; timezone, geo, text, chain utilities. Pay per call

SEC EDGAR filings (10-K/10-Q/8-K) for AI agents. Pay-per-call in USDC on Base via x402 - no API key, no signup.

US Economic, SEC EDGAR & On-Chain Data (x402)A

net.agentfund

21 paid tools: US macro data, SEC EDGAR filings, on-chain EVM reads. Settled in USDC on Base.

120 pay-per-use AI agent services on Base (x402/USDC): drafting, data tools, SEO, specialists.

SEC EDGAR crypto filing radar MCP with x402-paid Base USDC data URLs.

Arkova Verification

io.github.carson-see

Privacy-first document verification anchored to the public ledger.