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 danielrosehill/Claude-Image-Production-Plugin --skill auto-tonegit clone --depth 1 https://github.com/danielrosehill/Claude-Image-Production-PluginWrote 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/danielrosehill/claude-image-production-plugin/auto-tone)<a href="https://agentmods.dev/skills/danielrosehill/claude-image-production-plugin/auto-tone"><img src="https://agentmods.dev/badge/skills/danielrosehill/claude-image-production-plugin/auto-tone/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/danielrosehill/claude-image-production-plugin/auto-tone"><img src="https://agentmods.dev/badge/skills/danielrosehill/claude-image-production-plugin/auto-tone.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00086 | $0.01244 |
| Opus 5 | $0.00043 | $0.00622 |
| Sonnet 5 | $0.00017 | $0.00249 |
| Haiku 4.5 | $0.00009 | $0.00124 |
Grade A, and why
auto-tone 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 9d 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 — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Auto Tone
Fix flat or under/over-exposed images without manual curves work. Three modes:
- level (default) —
-auto-levelon the luminance channel. Stretches the histogram to[0,1]without touching colour balance. Safe, reversible-feeling. - gamma —
-auto-gamma. Drives the image's mean brightness toward 50% grey. Lifts dark scans, tames blown-out daylight. - punch —
-normalize(1% black + 1% white clip) followed by-auto-gamma. Stronger; the "press the button" preset for batch gallery prep.
When to use
- Underexposed indoor / night phone shots.
- Faded scans of old prints.
- Bulk normalisation of a gallery shot under varying light.
- Pre-step before sharpening or upscaling — auto-tone first so the next stage isn't operating on a flat histogram.
Do not use this skill when:
- Source is a RAW file — fix tone in
darktable-cliwhere you have full bit depth. - Image is intentionally low-key (silhouettes, night scenes with crushed shadows) or high-key (snow, fashion editorials). Auto-gamma flattens the look.
- The histogram is already well-distributed (a quick
magick identify -format "%[fx:standard_deviation]" "$IN"≥ 0.22 → likely already toned; auto-level becomes a no-op or worse).
Inputs
- Input — file or directory. Required.
- Mode —
level(default) |gamma|punch. - Recursive —
--recursivefor directory descent. - Output — default in-place suffix
_tone.--output-dir <path>to write into a sibling folder.--overwriteto replace. - Strength —
0.0to1.0(default1.0). Blends corrected image with original via-compose blend. - Preserve hue — default
on. Operate on the luminance channel only (HSLL), so colour relationships aren't shifted.--per-channelto apply auto-level independently to R/G/B (acts as combined tone + white-balance — usually you wantauto-white-balancefor that instead). - Clip (mode=punch) — black/white clip percent. Default
1.--clip 0.5for gentler,--clip 2for aggressive contrast.
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.
- 9d ago First seen · 98 lines · 86 tokens per session scan A 10dd983d5de2
auto-tone is a skill published in the GitHub repository danielrosehill/Claude-Image-Production-Plugin (16 stars, last pushed 22d ago), licensed MIT. It adds 86 tokens to every session and 1,244 once invoked, about $0.0004 per session on Opus 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 2026-08-30.
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