Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add laurigates/claude-plugins --skill comfy-debug-previewgit clone --depth 1 https://github.com/laurigates/claude-pluginsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/laurigates/claude-plugins/comfy-debug-preview)<a href="https://agentmods.dev/skills/laurigates/claude-plugins/comfy-debug-preview"><img src="https://agentmods.dev/badge/skills/laurigates/claude-plugins/comfy-debug-preview/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/laurigates/claude-plugins/comfy-debug-preview"><img src="https://agentmods.dev/badge/skills/laurigates/claude-plugins/comfy-debug-preview.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Output Handling · line 267 Output size or generation rate is not bounded. Unbounded output enables denial-of-service through resource exhaustion, log flooding, or context-window stuffing.Fix: Set explicit limits on output length, generation count, and rate. Use max_tokens and truncation to prevent unbounded output.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00048 | $0.02481 |
| Opus 5.5 | $0.00019 | $0.00992 |
| Sonnet 5.5 | $0.00010 | $0.00496 |
| Haiku 4.5 | $0.00005 | $0.00248 |
Grade A, and why
comfy-debug-preview scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ComfyUI debug & preview
Inspect values mid-graph without changing them. Read / log / visualize / time / report. Nothing in this skill mutates the data flow — these nodes either pass through unchanged (Preview Bridge, TimerNodeKJ) or are pure sinks (ShowText, CConsoleAny).
The split:
| Pack | Niche |
|---|---|
comfyui-custom-scripts (pysssss) |
ShowText — display text in node widget UI |
comfyui_essentials |
DisplayAny, ConsoleDebug, DebugTensorShape, BatchCount |
comfyui-kjnodes |
PreviewImageOrMask, FastPreview, VRAM_Debug, TimerNodeKJ, Sleep, Get(Image|Mask|Latent)SizeAndCount |
ComfyUI-Crystools |
CConsoleAny, CConsoleAnyToJson, CUtilsStatSystem (CPU/GPU/RAM monitor), CImageLoadWithMetadata, CMetadataExtractor, CMetadataCompare |
bjornulf_custom_nodes |
ShowFloat, ShowInt, ShowStringText, ShowJson, ImageDetails, VideoDetails |
comfyui-dream-project |
DreamStringToLog, DreamIntToLog, DreamFloatToLog, DreamJoinLog, DreamLogFile |
comfyui_yvann-nodes |
FloatsVisualizer (render a float array as a histogram image) |
comfyui-impact-pack |
Preview Bridge (Image) / Preview Bridge (Latent) — tee inspection while passing through |
comfyui-easy-use |
easy showAnything, easy showLoaderSettingsNames, imageCount, imagesCountInDirectory |
When to Use This Skill
| Use this skill when... | Use instead when... |
|---|---|
| Inspecting a value mid-graph without changing it (show/log/preview nodes) | Extracting metadata from a finished output file -> comfy-metadata |
| Checking VRAM/CPU/timing during a run | Computing the value being displayed -> comfy-math-strings |
Sources of truth
custom_nodes/comfyui-custom-scripts/py/show_text.py— pysssss ShowTextcustom_nodes/comfyui_essentials/misc.py— DisplayAny, ConsoleDebug, DebugTensorShapecustom_nodes/comfyui-kjnodes/nodes/nodes.py— VRAM_Debug, TimerNodeKJ, Sleep, Get*SizeAndCount, FastPreview, PreviewImageOrMaskcustom_nodes/ComfyUI-Crystools/crystools/nodes_*.py— CConsoleAny*, CUtilsStatSystem, metadata nodes
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago Changed · -149 lines fcd90b261305
- 1mo ago First seen · 313 lines · 48 tokens per session scan A a7df56118cb0
comfy-debug-preview is a skill published in the GitHub repository laurigates/claude-plugins (60 stars, last pushed yesterday), licensed MIT. It adds 48 tokens to every session and 2,481 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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