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Payments & Commerce

Payment, billing and storefront APIs for agents that sell or spend.

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Stripe

Payments platform with APIs for one-off charges, subscriptions, invoicing and Payment Links.

PaidAPI key

Lemon Squeezy

Merchant-of-record platform for digital products that handles sales tax and VAT for you.

PaidAPI key

Shopify Admin API

GraphQL and REST interfaces for managing products, orders and customers in a Shopify store.

PaidOAuth

PayPal Developer

APIs for accepting PayPal and card payments, subscriptions and payouts.

PaidOAuth

Paddle

Merchant of record for software sales, handling billing, tax and compliance.

PaidAPI key

Square APIs

Payments, catalog, orders and inventory APIs for in-person and online sellers.

PaidOAuth

Polar

Merchant-of-record billing built for developers selling software, subscriptions and digital products.

PaidAPI key

Coinbase Developer Platform

APIs and wallets for onchain payments, including tooling for agents that transact in stablecoins.

Free tierAPI key

x402

Open protocol that revives HTTP 402 so an API can charge small per-request payments from agents.

FreeNo auth

Adyen

Global payment platform for enterprises with unified online and in-store processing.

PaidAPI key

Wise Platform

APIs for international transfers and multi-currency accounts at transparent exchange rates.

PaidOAuth

WooCommerce REST API

REST endpoints for managing products and orders in WordPress-based WooCommerce stores.

FreeAPI key

Plaid

Connects apps to users' bank accounts for balances, transactions and identity data.

PaidAPI key

Gumroad

Simple storefront for selling digital goods, with a small API for sales and products.

FreeOAuth