Agent tools
Agent playground
Edit untrusted catalog JSON and see what the sink-free renderer keeps. Hostile corpus samples are available as presets. Nothing here executes agent HTML or loads remote code.
A simple emittable card (untrusted-safe).
Sink-free preview
Output is plain data from the catalog renderer: components keep only sanitized props; unknown or tier-denied ids become placeholders. Nothing is executed as HTML.
Nothing to show. The tree was empty or every node was dropped.
Validation
Run Render tree to see diagnostics.