> ## Documentation Index
> Fetch the complete documentation index at: https://comfyui-mcp.artokun.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# July 19: see what I see — viewport tools and one honest error surface

> New panel tools let the agent read your current selection and viewport, and panel_get_errors becomes the single error surface — every errored node joined to its cause (missing model with download URL, missing media, validation, runtime exception), closing the 'red node, no error message' gap.

*July 19, 2026*

v0.39.0 → v0.40.0 plus panel 0.9.2 → 0.9.6.

## "Look at this" — selection + viewport tools

New read tools (#238, panel 0.9.2): **`panel_view_selected`** and
**`panel_view_nodes_in_viewport`** — the agent can read exactly the nodes you've
selected or the region of the canvas you're looking at, instead of you describing
them.

## `panel_get_errors` — every errored node, joined to its cause

`panel_view_errored_nodes` merged into **`panel_get_errors`** (#240) rather than
shipping two overlapping error tools. The single surface now returns every errored
node **joined to its cause** — `nodes[]` with the node's detail summary,
`red_outline`, and `reasons[]` (`missing_model` with file/folder/download URL,
`missing_media`, `validation`, `execution` with `exception_type`) — plus graph-level
missing models / media / node types.

This closes a real gap behind "red node, no error message": missing model/media
assets paint nodes red **as soon as the workflow loads**, but the raw validation map
only populates on a queue attempt — so the old tool answered "no errors recorded"
while you were staring at red nodes (reproduced live, then fixed). Likewise a node
that throws at runtime is never painted red, so it can only be found here. Requires
panel ≥ 0.9.6; the panel also announces missing assets at **turn start**, not just
on request (#93).

## Panel fixes

Runtime failures carry their `exception_type` into the affordance (0.9.5), the
missing-node-types source was corrected with a validation-error fallback (0.9.4),
and the panel bundle stops tripping the Registry's YARA `SUSP_SVG` scan (0.9.3).