Payment Gateways — Overview
How opshell.dev will accept payments, the gateway options under evaluation, and the current exploration status.
PayPal Developer API Features
Catalog of PayPal developer API features testable in Sandbox, mapped to opshell.dev revenue shapes and API endpoints.
Sandbox Testing
How to test PayPal features for opshell.dev in Sandbox — accounts, credential storage, the local probe harness, and testing tools.
Feature Test Matrix
Per-feature PayPal Sandbox test status for opshell.dev, with test method and result tracking.
Webhook Endpoint
Self-hosted PayPal webhook receiver for opshell.dev — Docker service, Cloudflare tunnel routing, signature verification, and current status.
Invoice Ninja + PayPal REST
PayPal REST Sandbox configuration for the self-hosted Invoice Ninja instance used by opshell.dev.