Визуальный ревью планов и артефактов в браузере

★ 7.9 · documentation

plan-canvas is a Claude Code skill that opens plans and HTML artifacts in a local browser canvas where the user annotates elements, chats, and delivers an Approve or Request changes verdict without leaving the page. It runs via two CLI commands — `ecc-plan-canvas open <file>` to launch the browser view and `ecc-plan-canvas await <file>` to block until the user responds — backed by a detached loopback server on `127.0.0.1:4517` shared across sessions. Feedback returns as JSON containing chat messages, element-anchored annotations with CSS selectors and text snippets, and a final verdict; on `approve` the plan is confirmed and implementation begins, on `request-changes` the artifact is revised and the loop continues with live reload. Mermaid diagrams inside plan files render as interactive diagrams the user can point at directly. The skill is designed for teams using the `/plan` confirmation gate who want to review designs, comparisons, or structured plans visually rather than through typed descriptions.