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Agent skill

JSON Config Regression

by InternationalColorConsortium in InternationalColorConsortium/iccDEV

Validate iccDEV JSON/profile config parser changes with fail-closed regression gates and CLI exercises.

BSD-3-ClauseAuto-check passedDevelopment

Install JSON Config Regression

skills CLI
$ npx skills add InternationalColorConsortium/iccDEV --skill json-config-regression -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install InternationalColorConsortium/iccDEV json-config-regression --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/InternationalColorConsortium/iccDEV.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/json-config-regression .claude/skills/json-config-regression && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
json-config-regression
GitHub stars
183
Token cost
~469 tokens
SKILL.md length
152 words
Files
1
Skills in repo
23
Repo updated
First seen
Licence
BSD-3-Clause

At a glance

Validate iccDEV JSON/profile config parser changes with fail-closed regression gates and CLI exercises.

  • Development work in your project
  • SKILL.md covers Fail-Closed Rules, Validation, Review Checklist and References
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

JSON Config Regression is an agent skill from InternationalColorConsortium/iccDEV. Validate iccDEV JSON/profile config parser changes with fail-closed regression gates and CLI exercises.

Its SKILL.md is about 470 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. The repository describes itself as: iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. The licence is BSD-3-Clause.

When your agent uses it

  • Development work in your project

Example prompts

  • “/json-config-regression”

Requirements

  • Pre-approved tools (allowed-tools): bash, read, grep, glob, shell(git:*)

What it can do on your machine

Read from SKILL.md and the folder at commit 3c2425d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • bash
    • read
    • grep
    • glob
    • shell(git:*)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

JSON Config Regression loads about 469 tokens when it runs. Until then it costs about 32 tokens; SKILL.md has 152 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~32
When it runs · the whole SKILL.md, loaded when a task matches
~469

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from InternationalColorConsortium/iccDEV at commit 3c2425d, republished under its BSD-3-Clause licence (© InternationalColorConsortium). 152 words, ~469 tokens.

Download SKILL.mdSave it as .claude/skills/json-config-regression/SKILL.md (or your agent's skills folder).
name
json-config-regression
description
Validate iccDEV JSON/profile config parser changes with fail-closed regression gates and CLI exercises.
allowed-tools
bash, read, grep, glob, shell(git:*)

JSON and Config Regression

Use this skill when editing IccJSON/, JSON serialization, or -cfg handling for iccApplyNamedCmm, iccApplyProfiles, or iccApplySearch.

Fail-Closed Rules

  • Reject short fixed-size arrays instead of truncating.
  • Reject non-numeric values for required numeric fields.
  • Propagate failed nested ParseJson() or fromJson() calls.
  • Reject bad struct members instead of skipping them.
  • Reset stale state before parse and honor reset/fromJson flags.
  • Keep raw-input size bounds finite, and keep the profile reader and the -cfg reader on the same bound. When changing one, check it against what iccToJson itself emits at its documented -indent settings, not against an estimate.

Validation

Run the focused gates from the repository root after building tools:

bash
ICCDEV_TOOLS_DIR=$PWD/Build/Tools ICCDEV_TESTING_DIR=$PWD/Testing .github/scripts/iccdev-json-parser-regression-tests.sh
ICCDEV_TOOLS_DIR=$PWD/Build/Tools ICCDEV_TESTING_DIR=$PWD/Testing .github/scripts/iccdev-json-cfg-tests.sh

If observer/profile behavior is involved, also run:

bash
ICCDEV_TOOLS_DIR=$PWD/Build/Tools ICCDEV_TESTING_DIR=$PWD/Testing .github/scripts/iccdev-stdobserver-regression-tests.sh

Review Checklist

  • Verify exact CLI command names and config keys.
  • Add malformed tests for rejected input.
  • Confirm success paths still round-trip valid profiles/configs.
  • Keep test output reproducible from the repository root.

References

  • ../../copilot-instructions.md
  • ../../prompts/bisect-regression.prompt.md
  • ../../../docs/iccjson.md
  • ../../../docs/iccjson-tag-types.md

© InternationalColorConsortium, BSD-3-Clause. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .github/skills/json-config-regression of InternationalColorConsortium/iccDEV.

Open the folder on GitHubat commit 3c2425d

Compare with similar skills

JSON Config Regression next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

JSON Config Regression compared with similar skills
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JSON Config Regression this skillInternationalColorConsortium/iccDEV183—~469Automated safety check: PassBSD-3-Clause
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PR Babysitteropeninterpreter/openinterpreter69k3 repos~4.2kAutomated safety check: PassApache-2.0
Code Review ChecklistshareAI-lab/learn-claude-code78k4 repos~1.1kAutomated safety check: PassMIT

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Categories

Questions about JSON Config Regression

What does JSON Config Regression do?

Validate iccDEV JSON/profile config parser changes with fail-closed regression gates and CLI exercises. JSON Config Regression is an agent skill from InternationalColorConsortium/iccDEV. Validate iccDEV JSON/profile config parser changes with fail-closed regression gates and CLI exercises.

When should I use JSON Config Regression?

JSON Config Regression fits situations like: development work in your project.

How do I install JSON Config Regression in Claude Code?

Run `npx skills add InternationalColorConsortium/iccDEV --skill json-config-regression -a claude-code`. Or copy the skill folder (.github/skills/json-config-regression in InternationalColorConsortium/iccDEV) into .claude/skills/json-config-regression in your project. Claude Code loads it when a task matches its description.

How do I install JSON Config Regression in Codex?

Run `npx skills add InternationalColorConsortium/iccDEV --skill json-config-regression -a codex`. Or copy the skill folder (.github/skills/json-config-regression in InternationalColorConsortium/iccDEV) into .agents/skills/json-config-regression in your project. Codex loads it when a task matches its description.

Can I use JSON Config Regression in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add InternationalColorConsortium/iccDEV --skill json-config-regression -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/json-config-regression, .gemini/skills/json-config-regression, .github/skills/json-config-regression and .opencode/skills/json-config-regression in your project.

What does JSON Config Regression need to run?

SKILL.md names no scripts, command-line tools or credentials: JSON Config Regression is instructions for the agent only. Its frontmatter pre-approves these tools: bash, read, grep, glob, shell(git:*).

Does JSON Config Regression access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is JSON Config Regression safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does JSON Config Regression use?

JSON Config Regression is published under the BSD-3-Clause licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does JSON Config Regression use?

About 469 tokens (SKILL.md is roughly 1.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to JSON Config Regression?

Skills that share tags, products or a category with JSON Config Regression: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 297k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains JSON Config Regression?

InternationalColorConsortium (a GitHub organization) maintains it in InternationalColorConsortium/iccDEV, which has 183 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on October 9, 2026.

Source: InternationalColorConsortium/iccDEV on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.