Rune Madsen upgraded the POS extension templates in the Shopify/extensions-templates repository to the 2026-01 API version, focusing on enabling next-generation point-of-sale extension capabilities. By updating templates such as pos-smart-grid, pos-action, and pos-block, Rune unlocked access to the Scanner API, allowing extension developers to build richer checkout and scanning workflows for merchants. The work involved targeted API integration and front end development using Liquid, ensuring all templates aligned with the 2026 API roadmap. This upgrade future-proofed the template baseline, reduced friction for downstream extension upgrades, and improved the overall developer experience, though the scope was limited to a single feature.