API Reference

Complete reference for the Circular Payments REST API. Base URL: api.circularpayments.com/v1

Base URL: https://api.circularpayments.com/v1

Auth: Bearer sk_live_...

Content-Type: application/json

POST/v1/charges

Charges

Create, capture, and refund charges. Supports one-time payments, authorization holds, and partial captures.

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POST/v1/customers

Customers

Create and manage customer profiles. Store payment methods on file for future transactions.

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POST/v1/invoices

Invoices

Generate and send invoices. Track payment status, send reminders, and accept partial payments.

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POST/v1/subscriptions

Subscriptions

Create recurring billing plans. Manage trials, upgrades, downgrades, and cancellations.

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POST/v1/refunds

Refunds

Issue full or partial refunds on completed charges. Track refund status and settlement timing.

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POST/v1/webhooks

Webhooks

Register webhook endpoints to receive real-time event notifications. Manage subscriptions and view delivery logs.

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