/API TERMS
API Terms/Payments
Category

Payments APIs

22 Payments APIs with verified auth, pricing and rate limits. 9 offer a free tier; 4 document an MCP server. Every field carries the source URL that states it.

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APICategoryAuthPricingFree tierLimitsOpenAPIMCPChecked
P402.iop402.ioPaymentsBearer tokenfreemium✓n/d✓✓2026-08-03
Neotimoneotimo.comPaymentsn/dusage based✓n/d✓✓2026-07-26
Paddle APIpaddle.comPaymentsBearer tokenusage based✓n/dn/d✓2026-07-13
Checkout.com APIcheckout.comPaymentsAPI keycontact sales✓n/dn/dn/d2026-07-16
GoCardless APIgocardless.comPaymentsBearer tokenusage based✓n/dn/dn/d2026-07-13
Increase APIincrease.comPaymentsOAuth 2.0usage based✓n/dn/dn/d2026-07-08
Braintree APIbraintreepayments.comPaymentsotherusage basedn/dn/dn/dn/d2026-07-13
Lemon Squeezy APIlemonsqueezy.comPaymentsn/dusage based✓n/dn/dn/d2026-07-13
Mollie APImollie.comPaymentsn/dusage based✓n/dn/dn/d2026-07-13
PayPal REST APIpaypal.comPaymentsOAuth 2.0n/dn/d✓n/dn/d2026-07-12
Rebilly REST APIrebilly.comPaymentsn/dusage based✓n/dn/dn/d2026-07-08
Square API (Connect v2)squareup.comPaymentsBearer tokenn/dn/dn/dn/d✓2026-07-12
Adyen Account APIadyen.comPaymentsn/dcontact salesn/dn/dn/dn/d2026-07-08
Nium APInium.comPaymentsn/dcontact salesn/dn/dn/dn/d2026-07-26
Payoneer APIpayoneer.comPaymentsn/dusage basedn/dn/dn/dn/d2026-07-26
Sitelinesiteline.comPaymentsn/dcontact salesn/dn/dn/dn/d2026-08-03
Taxamotaxamo.comPaymentsn/dcontact salesn/dn/dn/dn/d2026-07-26
CardinalCommercecardinalcommerce.comPaymentsn/dcontact salesn/dn/dn/dn/d2026-08-10
Beanstream Paymentsbeanstream.comPaymentsn/dn/dn/dn/dn/dn/d2026-07-26
MasterCard BIN Table Listingmastercard.comPaymentsn/dn/dn/dn/dn/dn/d2026-07-26
Velo Payments APIsvelopayments.comPaymentsn/dn/dn/dn/dn/dn/d2026-07-12
Wise Platform APIwise.comPaymentsn/dn/dn/dn/dn/dn/d2026-07-26