Build an App with AI Agent

Payment Core includes an agent guide that helps developers research, build, test, and document a new payment-provider app for Frappe and ERPNext.

The complete instructions are maintained in AGENTS.md.

Payment Core remains provider-neutral. Credentials, API clients, checkout pages, webhooks, branding, and provider-specific logic
are created in a separate provider app.

Demo

Supported Development Tools

• Codex and Cursor automatically discover AGENTS.md.
• For Claude Code, explicitly ask it to read and follow apps/payment_core/AGENTS.md.

Before You Start

Use a Frappe Bench containing:

• Frappe
• ERPNext
• Payment Core
• A local development site for testing

Payment Core supports Frappe and ERPNext from version-16 through develop.