> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.paymentkit.com/guides/product-catalog/upgrade-paths/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.paymentkit.com/_mcp/server.

# Upgrade paths

> Control how customers move between products or plans and define allowed upgrade and downgrade behavior.