proof

proof is a command for Claude Code from coltonbearden/carrel. It costs 46 tokens per session (647 once invoked), scanned A, original, MIT.

A tool that previews how an image's colors will appear under a chosen ICC profile. An ICC profile describes the color behavior of a printer, display, or color space such as CMYK or sRGB.

In plain words
What is it for?
Use it to create a soft-proof image for printing or display and inspect the average, maximum, and visible pixel color shifts.
Why use it?
It shows likely color changes before an image is printed or displayed in another color space. It also reports how much the pixels changed.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the carrel-documents plugin — 1 skill, 5 commands, 1 agent shipped together

Good fit Use it to create a soft-proof image for printing or display and…

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/coltonbearden/carrel/proof
Install

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.

Clone the repo
git clone --depth 1 https://github.com/coltonbearden/carrel

Made for: Claude Code.

Or install carrel-documents, the plugin that ships this one along with the rest of its 1 skill, 5 commands, 1 agent.

Wrote 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.

agentmods badge for proof

README.md
[![agentmods](https://agentmods.dev/badge/commands/coltonbearden/carrel/proof.svg)](https://agentmods.dev/commands/coltonbearden/carrel/proof)
Your own site
<a href="https://agentmods.dev/commands/coltonbearden/carrel/proof"><img src="https://agentmods.dev/badge/commands/coltonbearden/carrel/proof.svg" alt="Measured on agentmods" height="20"></a>
Per session 46 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 647 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00046 $0.00647
Opus 5 $0.00023 $0.00324
Sonnet 5 $0.00009 $0.00129
Haiku 4.5 $0.00005 $0.00065

Measured yesterday against content hash a2003485e4f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

proof 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 yesterday.

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.

plugins/carrel-documents/commands/proof.md · 38 lines

What it actually says

Soft-proof: $ARGUMENTS

Run the carrel CLI via Bash. Map the user's request onto the real flags in the --help block below (regenerated from the CLI by scripts/sync_plugins.py; if the installed carrel proof --help differs, trust the installed version — never invent flags):

Usage: carrel proof [OPTIONS] SRC

  Soft-proof SRC against an ICC PROFILE (simulate print/display output).

  Writes the proofed image and reports the color shift: mean/max per-channel delta and the share of
  pixels that moved visibly. With --json, prints the report as one JSON object.

Options:
  --profile PROFILE               Path to a .icc file, or builtin alias: cmyk, gray, p3, srgb.
                                  [required]
  --out FILE                      Proofed image path [default: <SRC>.proof.png].
  --intent [perceptual|relative]  Rendering intent.  [default: perceptual]
  --json                          Machine-readable JSON output.
  --help                          Show this message and exit.
  • --profile (required): a .icc path or a builtin alias — cmyk ("how will this print"), gray, p3 (wide-gamut displays), srgb. carrel doctor --json lists the icc_dirs where system profiles live if the user names a specific printer profile.
  • --intent perceptual (default; pleasing overall) or relative (colorimetric; exact in-gamut colors, clipped out-of-gamut).
  • --out FILE defaults to <SRC>.proof.png; the original is never modified.

Use --json and translate the report for the user: the proofed image path, mean/max per-channel delta, and the share of pixels that moved visibly — "X% of pixels shift noticeably; the largest changes are in " is more useful than raw numbers. Offer carrel diff SRC OUT --mode image --out heatmap.png to show where the shift lands, and carrel color convert --to-profile when the user wants to actually embed the profile rather than preview it. Exit code 4 means the input is not an image or the profile could not be read.

Requires the carrel CLI on PATH. If carrel is not found, tell the user to install it with uv tool install carrel (see the repo's INSTALL notes), or run it as uv run carrel ... from the carrel repo root.

Changes

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.

  1. yesterday First seen · 38 lines · 46 tokens per session scan A a2003485e4f7

Subscribe to this mod's changes

proof is a command published in the GitHub repository coltonbearden/carrel (1 stars, last pushed 2d ago), licensed MIT. It adds 46 tokens to every session and 647 once invoked, about $0.0002 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 2026-09-05.