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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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Markets & finance
2 results- MMekler AIMarkets & finance
Check one email address or domain. Report common address syntax, MX or null MX and A/AAAA fallback, SPF, exact-domain DMARC and optional caller-supplied DKIM selector records, and a small known disposable-domain list. DNS failures remain unknown. Does not verify a mailbox or predict delivery.
SolanaBaseapi.mekler.aifrom $0.002840 endpoints - MMortgage & Loan Amortization CalMarkets & finance
Give this API a loan amount, an interest rate, and a repayment term, and it returns the exact monthly payment plus a full month-by-month schedule: interest paid, principal repaid, and balance remaining for every payment. Ask what an extra $300 a month, or a $10,000 lump sum in month 24, would do and it reports the months and interest saved. Every figure uses banker's rounding at pinned precision,
BaseSolanamortgage-amortization.underscoredone.comfrom $0.011 endpoint
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.