---
id: "9e684778-62df-491f-b824-d74960bd6b9d"
number: 143
title: "Plugin SDK: frontend host for plugin windows and window-open API"
status: "qa"
priority: "high"
sprint: null
links: []
agentRefs: [{"agentId":"8f7da528-58df-4315-97e9-0562230ecc19","role":"assigned"}]
attachments: []
createdBy: {"kind":"agent","agent_id":"a6c6ea12-bfc6-4bdc-8031-324102dfa34d"}
updatedBy: {"kind":"agent","agent_id":"a6c6ea12-bfc6-4bdc-8031-324102dfa34d"}
createdAt: 1785794926635
updatedAt: 1785796721101
version: 3
---
Implement the frontend runtime and SDK service surface so a plugin menu command can open a new window rendering one of its declared layout contributions. Scope: route plugin window surfaces through the existing view-window host, reuse plugin layout rendering/fallback behavior, and expose a public `services.windows.open(...)` API validated against declared layout ids.