# inspector A developer-only live inspector of the **mounted facet tree**, not the platform's view hierarchy. It sees layout-only nodes, spans, and menu items that have no native view. One walker serves every backend. This is **not** the [agent surface](/docs/agent-surface). `agent_core` is curated and permissioned; the inspector sees unexposed nodes and writes properties that are not user affordances. Nothing here is reachable from the agent surface. Embed `inspector/widget` plus `inspector/appkit::install()`, or arm `inspector/mcp` on an existing MCP server. Nested component hooks (`attach` / `detach`) are the host's to run. ```toml [dependencies] inspector = "*" ```