Payments APIs let you add payments capabilities without building from scratch. Every entry below is profiled with trust signals — pricing model, authentication requirements, CORS support, rate limits, and live uptime checks — so you can compare options and pick production-safe choices instead of guessing from a link list.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| AWS Budgets API Official AWS Budgets service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CUR API Official AWS CUR service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CostExplorer API Official AWS CostExplorer service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MarketplaceCatalog API Official AWS MarketplaceCatalog service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MarketplaceCommerceAnalytics API Official AWS MarketplaceCommerceAnalytics service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MarketplaceEntitlementService API Official AWS MarketplaceEntitlementService service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MarketplaceMetering API Official AWS MarketplaceMetering service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS SecurityHub API Official AWS SecurityHub service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| Adyen Checkout API Adyen Checkout and Platform APIs for online and in-person payments across cards, wallets, and local methods in a single integration. API-key or basic authentication against live and test environments. | Paid | API Key | No | Profile | |
| Azure Api Management Api Management API 2016-10-10 16 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimsubscriptions.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 20 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimsubscriptions.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 22 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimsubscriptions.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2019-01-01 28 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2019-01-01/apimsubscriptions.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2019-12-01 30 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2019-12-01/apimsubscriptions.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2024-05-01 15 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2024-05-01/apimsubscriptions.json. | Paid | API Key | Yes | Profile | |
| Azure App Container Apps API 2025-07-01 10 Official Microsoft Azure REST API OpenAPI specification for specification/app/resource-manager/Microsoft.App/ContainerApps/stable/2025-07-01/BillingMeters.json. | Paid | API Key | Yes | Profile | |
| Azure App Container Apps API 2025-07-01 18 Official Microsoft Azure REST API OpenAPI specification for specification/app/resource-manager/Microsoft.App/ContainerApps/stable/2025-07-01/Subscriptions.json. | Paid | API Key | Yes | Profile | |
| Azure Aws Connector Microsoft.Aws Connector API 2024-12-01 106 Official Microsoft Azure REST API OpenAPI specification for specification/awsconnector/resource-manager/Microsoft.AwsConnector/stable/2024-12-01/snsSubscription.json. | Paid | API Key | Yes | Profile | |
| Azure Aws Connector Microsoft.Aws Connector API 2024-12-01 76 Official Microsoft Azure REST API OpenAPI specification for specification/awsconnector/resource-manager/Microsoft.AwsConnector/stable/2024-12-01/logsSubscriptionFilter.json. | Paid | Unknown | Yes | Profile | |
| Azure Aws Connector Microsoft.Aws Connector API 2024-12-01 90 Official Microsoft Azure REST API OpenAPI specification for specification/awsconnector/resource-manager/Microsoft.AwsConnector/stable/2024-12-01/rdsEventSubscription.json. | Paid | API Key | Yes | Profile | |
| Beanstream Payments API https://www.beanstream.com/api/v1 | Unknown | Unknown | Yes | Profile | |
| Billingo API v3 API This is a Billingo API v3 documentation. Our API based on REST software architectural style. API has resource-oriented URLs, accepts JSON-encoded request bodies and returns JSON-encoded responses. To use this API you hav | Paid | Unknown | Yes | Profile | |
| Billplz Payment platform | Freemium | API Key | Yes | Profile | |
| Boleto.Cloud A api to generate boletos in Brazil | Free | API Key | No | Profile | |
| Chargebee API Chargebee API for subscription billing and revenue management: plans, coupons, invoicing, dunning, revenue recognition, and analytics. | Freemium | API Key | Yes | Profile | |
| Checkout.com API Checkout.com API for global card payments, Apple Pay, Google Pay, tokenization, fraud screening, and multi-currency processing. | Paid | API Key | No | Profile | |
| CircleCI REST API The CircleCI API is a RESTful, fully-featured API that allows you to do almost anything in CircleCI. You can access all information and trigger all actions. The only thing we don’t provide access to is billing functions, | Unknown | Unknown | Yes | Profile | |
| Commerce API Use the Ticketmaster Commerce API to look up available offers and products on various Ticketmaster platforms for North America markets. For formal partnerships and relationships, selected offers and products can be carte | Unknown | API Key | Yes | Profile | |
| Fire Financial Services Business API The fire.com API allows you to deeply integrate Business Account features into your application or back-office systems. The API provides read access to your profile, accounts and transactions, event-driven notifications | Unknown | API Key | Yes | Profile | |
| Flutterwave API Flutterwave API for African and global payments: cards, bank transfers, mobile money, USSD, and multi-currency settlements across 30+ countries. | Paid | API Key | Yes | Profile | |
| FraudLabs Pro Fraud Detection API Online payment fraud detection service. It helps merchants to minimize chargebacks and therefore maximize the revenue. It can be used to detect fraud for various kinds of payment method, such as credit card, paypal, cod | Unknown | Unknown | Yes | Profile | |
| Google Authorized Buyers Marketplace API Official Google Authorized Buyers Marketplace API REST API (v1alpha) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Cloud Billing API Official Google Cloud Billing API REST API (v1beta) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Cloud Billing Budget API Official Google Cloud Billing Budget API REST API (v1beta1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Cloud Commerce Partner Procurement API Official Google Cloud Commerce Partner Procurement API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Firebase Rules API Official Google Firebase Rules API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Network Security API Official Google Network Security API REST API (v1beta1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Payments Reseller Subscription API Official Google Payments Reseller Subscription API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Secure Source Manager API Official Google Secure Source Manager API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Security Command Center API Official Google Security Command Center API REST API (v1beta1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Security Posture API Official Google Security Posture API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Security Token Service API Official Google Security Token Service API REST API (v1beta) discovered via Google APIs Discovery Service. | Unknown | API Key | Yes | Profile | |
| Google Web Security Scanner API Official Google Web Security Scanner API REST API (v1alpha) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Workspace Marketplace API Official Google Google Workspace Marketplace API REST API (v2) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Klarna Klarna payment and shopping service | Paid | API Key | No | Profile | |
| MercadoPago Mercado Pago API reference - all the information you need to develop your integrations | Paid | API Key | No | Profile | |
| Mollie API Mollie API for accepting payments in Europe: iDEAL, Bancontact, credit cards, subscriptions, and payouts with minimal integration. | Paid | API Key | Yes | Profile | |
| Moov The Moov API makes it simple for platforms to send, receive, and store money | Freemium | API Key | Yes | Profile | |
| Open Banking - Payments initiation service API Open Banking - Payments initiation service | Unknown | Unknown | Yes | Profile | |
| PAYONE Link API PAYONE Link API public API. | Unknown | API Key | Yes | Profile | |
| Paddle Billing API Paddle Billing API for subscriptions, checkouts, transactions, adjustments, prices, products, and reporting. Merchant-of-record model handles global sales tax. API-key bearer authentication. | Freemium | API Key | No | Profile | |
| PayPal REST APIs PayPal REST APIs for checkout, orders, payments, refunds, subscriptions, invoicing, payouts, and dispute management. OAuth 2.0 client-credentials authentication; free sandbox environment included. | Freemium | OAuth | No | Profile | |
| Payment Initiation API Swagger for Payment Initiation API Specification | Unknown | Unknown | Yes | Profile | |
| Paystack API Paystack API for African payments: cards, bank transfers, mobile money, split payments, recurring billing, and settlements across 15+ countries. | Paid | API Key | Yes | Profile | |
| Proxy API Welcome to the Proxy API. You can use this API to access all Proxy API endpoints. ## Base URL The base URL for all API requests is `https://unify.apideck.com` ## Headers Custom headers that are expected as part of the re | Unknown | OAuth | Yes | Profile | |
| Qualpay Payment Gateway API This document describes the Qualpay Payment Gateway API. | Unknown | Unknown | Yes | Profile | |
| Razorpay Payments API Razorpay Payments API for Indian market payment collection via UPI, cards, netbanking, and wallets, plus payment links, subscriptions, settlements, and Route splits. Key ID and secret over HTTP Basic authentication. | Freemium | API Key | No | Profile | |
| Report webhooks API Adyen sends notifications through webhooks to inform your system that reports were generated and are ready to be downloaded. You can download reports programmatically by making an HTTP GET request, or manually from your | Unknown | Unknown | Yes | Profile | |
| Square Easy way to take payments, manage refunds, and help customers checkout online | Paid | OAuth | No | Profile | |
| Stripe Payment processing, subscriptions, and financial management | Paid | API Key | No | Profile | |
| Stripe API The Stripe REST API. Please see https://stripe.com/docs/api for more details. | Unknown | Unknown | Yes | Profile | |
| The SureVoIP RESTful API # Introduction Welcome to the SureVoIP RESTful hypermedia API (sometimes known as a VoIP REST API, Telecom REST API, SIP API, Hypermedia API or just VoIP API.) The SureVoIP API is a way for you to automate your interacti | Unknown | Unknown | Yes | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.