Stripe

Guides Stripe integration decisions — API selection (Checkout Sessions vs PaymentIntents), Connect platform setup (Accounts v2, controller properties), billing/subscriptions, Treasury financial accounts, integration surfaces (Checkout, Payment Element), migrating from deprecated Stripe APIs, and security best practices (API key management, restricted keys, webhooks, OAuth). Use when building, modifying, or reviewing any Stripe integration — including accepting payments, building marketplaces, integrating Stripe, processing payments, setting up subscriptions, creating connected accounts, or implementing secure key handling.

Guide for upgrading Stripe API versions and SDKs

Explain Stripe error codes and provide solutions with code examples

Use when setting up a new app or local repo with Stripe Projects, provisioning a software stack, or bootstrapping the Projects CLI from a coding agent.

Display Stripe test card numbers for various testing scenarios