Agent skill

Config Consistency Checker

by ArabelaTso in ArabelaTso/Skills-4-SE

Automatically analyzes configuration files to detect inconsistencies, conflicts, missing keys, and divergent values across environments, versions, or modules.

Apache-2.0Auto-check: notesBackend & APIs

Install Config Consistency Checker

skills CLI
$ npx skills add ArabelaTso/Skills-4-SE --skill config-consistency-checker -a claude-code

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

GitHub CLI
$ gh skill install ArabelaTso/Skills-4-SE config-consistency-checker --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/ArabelaTso/Skills-4-SE.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/config-consistency-checker .claude/skills/config-consistency-checker && 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
config-consistency-checker
GitHub stars
253
Token cost
~1.2k tokens
SKILL.md length
329 words
Files
1
Skills in repo
170
Repo updated
First seen
Licence
Apache-2.0

At a glance

Automatically analyzes configuration files to detect inconsistencies, conflicts, missing keys, and divergent values across environments, versions, or modules.

  • Works in 5 steps: Parse Configuration Files → Extract Structure → Compare Configurations → …
  • Managing multi-environment configurations
  • SKILL.md covers Workflow, Quick Examples, Detection Patterns and Report Format, plus 3 more sections
  • Needs DATABASE_PASSWORD and API_KEY

What it does

Config Consistency Checker is an agent skill from ArabelaTso/Skills-4-SE. Automatically analyzes configuration files to detect inconsistencies, conflicts, missing keys, and divergent values across environments, versions, or modules. Use when managing multi-environment configurations, detecting config drift, validating configuration changes, or ensuring consistency across microservices. Supports JSON, YAML, TOML, INI, XML, .env, and properties files. Identifies security issues like hardcoded secrets and provides actionable resolution guidance.

Its SKILL.md is about 1.2k 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 Backend & APIs, covering Microservices and Secrets management. The repository describes itself as: A curated list of 180+ useful Claude Skills for Software Engineering and resources for customizing AI for SE workflows. The licence is Apache-2.0.

When your agent uses it

  • Managing multi-environment configurations
  • Detecting config drift
  • Validating configuration changes
  • Ensuring consistency across microservices

Example prompts

  • “/config-consistency-checker”

Requirements

  • A credential in API_KEY

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Parse Configuration Files
  2. Extract Structure
  3. Compare Configurations
  4. Detect Issues
  5. Generate Report

What it can do on your machine

Read from SKILL.md and the folder at commit 4f38503. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    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 json and yaml).

    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 these keys or tokens, usually read from environment variables:

    • DATABASE_PASSWORD
    • API_KEY
    • DB_PASSWORD

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

Context cost

Config Consistency Checker loads about 1.2k tokens when it runs. Until then it costs about 125 tokens; SKILL.md has 329 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~125
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:3
    es. Supports JSON, YAML, TOML, INI, XML, .env, and properties files. Identifies security issues like hardcoded secrets a
  • NoteMentions a .env fileSKILL.md:20
    - Environment files (.env)

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 ArabelaTso/Skills-4-SE at commit 4f38503, republished under its Apache-2.0 licence (© ArabelaTso). 329 words, ~1,213 tokens.

Download SKILL.mdSave it as .claude/skills/config-consistency-checker/SKILL.md (or your agent's skills folder).
name
config-consistency-checker
description
Automatically analyzes configuration files to detect inconsistencies, conflicts, missing keys, and divergent values across environments, versions, or modules. Use when managing multi-environment configurations, detecting config drift, validating configuration changes, or ensuring consistency across microservices. Supports JSON, YAML, TOML, INI, XML, .env, and properties files. Identifies security issues like hardcoded secrets and provides actionable resolution guidance.

Config Consistency Checker

Automatically detect inconsistencies, conflicts, and mismatches in configuration files across environments and modules.

Workflow

1. Parse Configuration Files

Read and parse configuration files in various formats:

  • JSON (.json)
  • YAML (.yml, .yaml)
  • TOML (.toml)
  • INI (.ini)
  • XML (.xml)
  • Environment files (.env)
  • Properties files (.properties)
2. Extract Structure

Build configuration structure:

  • Key-value pairs
  • Nested objects/sections
  • Arrays/lists
  • Data types
3. Compare Configurations

Compare across:

  • Environments: dev vs staging vs production
  • Versions: v1 vs v2
  • Modules: service-a vs service-b
  • Templates: actual vs expected
4. Detect Issues

Identify:

  • Missing required keys
  • Conflicting values
  • Type mismatches
  • Divergent settings
  • Deprecated keys
  • Security issues
5. Generate Report

Provide:

  • Detailed inconsistency list
  • Critical issues highlighted
  • Resolution guidance
  • Suggested fixes

Quick Examples

Example 1: Environment Mismatch

dev.json:

json
{
  "database": {
    "host": "localhost",
    "port": 5432,
    "ssl": false
  }
}

prod.json:

json
{
  "database": {
    "host": "prod-db.example.com",
    "port": 5432
  }
}

Issues Detected:

  • Missing key: prod.json missing database.ssl
  • Critical: SSL disabled in dev but undefined in prod

Resolution: Add "ssl": true to prod.json

Example 2: Type Mismatch

config-a.yaml:

yaml
timeout: 30

config-b.yaml:

yaml
timeout: "30"

Issue: Type mismatch (number vs string)

Resolution: Standardize to number: timeout: 30

Example 3: Security Issue

config.env:

DATABASE_PASSWORD=secret123
API_KEY=hardcoded-key-here

Issues:

  • Hardcoded password
  • Hardcoded API key

Resolution: Use environment variables or secrets manager

Detection Patterns

Missing Keys

Compare key sets across configs:

Config A keys: {host, port, ssl}
Config B keys: {host, port}
Missing in B: {ssl}
Conflicting Values

Same key, different values:

dev.timeout = 30
prod.timeout = 60
→ Divergent (may be intentional)
Type Mismatches

Same key, different types:

config-a.port = 8080 (number)
config-b.port = "8080" (string)
→ Type inconsistency
Security Issues

Detect patterns:

  • password, secret, key with hardcoded values
  • Weak settings: ssl: false, debug: true in production
  • Exposed credentials

Report Format

Configuration Consistency Report
================================

Files Analyzed:
- dev.json
- staging.json
- prod.json

Summary:
- Total Issues: 5
- Critical: 2
- Warnings: 3

Critical Issues:
1. Missing Key: prod.json missing 'database.ssl'
   Impact: SSL may be disabled in production
   Resolution: Add "ssl": true to prod.json

2. Security Issue: Hardcoded password in dev.json
   Impact: Credentials exposed in config file
   Resolution: Use environment variable ${DB_PASSWORD}

Warnings:
3. Type Mismatch: timeout is number in dev, string in staging
   Resolution: Standardize to number type

4. Divergent Value: max_connections differs (dev:10, prod:100)
   Note: May be intentional for different environments

5. Deprecated Key: 'legacy_mode' is deprecated
   Resolution: Remove or migrate to new setting

Best Practices

  • Environment-specific values: Document intentional differences
  • Type consistency: Use same types across environments
  • Required keys: Define and validate required configuration
  • Security: Never hardcode secrets
  • Validation: Use schemas to enforce structure
  • Documentation: Comment why values differ

Common Scenarios

Multi-Environment Setup

Compare dev, staging, prod configs to ensure consistency while allowing intentional differences.

Microservices

Validate that shared configuration keys are consistent across services.

Configuration Migration

Detect missing or changed keys when upgrading configuration versions.

Security Audit

Scan for hardcoded secrets and insecure settings.

Tips

  • Start with critical keys (database, security settings)
  • Document intentional differences
  • Use configuration schemas for validation
  • Automate checks in CI/CD pipeline
  • Review security issues immediately

© ArabelaTso, Apache-2.0. 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 skills/config-consistency-checker of ArabelaTso/Skills-4-SE.

Open the folder on GitHubat commit 4f38503

Compare with similar skills

Config Consistency Checker 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.

Config Consistency Checker compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Config Consistency Checker this skillArabelaTso/Skills-4-SE253—~1.2kAutomated safety check: NotesApache-2.0
API Security Designvinayaklatthe/microsoft-security-skills175—~2.2kAutomated safety check: PassMIT
Firecrawl Build Onboardingfirecrawl/firecrawl190k1 repos~1.4kAutomated safety check: NotesISC
Node Backend Development Guidelinesdiet103/claude-code-infrastructure-showcase10k2 repos~2kAutomated safety check: PassMIT
Nodejs Backend Patternsever-works/ever-works16218 repos~4kAutomated safety check: PassAGPL-3.0
Better Auth Best Practiceslatitude-dev/latitude-llm4.7k7 repos~1.6kAutomated safety check: PassMIT

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Categories

Questions about Config Consistency Checker

What does Config Consistency Checker do?

Automatically analyzes configuration files to detect inconsistencies, conflicts, missing keys, and divergent values across environments, versions, or modules. Config Consistency Checker is an agent skill from ArabelaTso/Skills-4-SE. Automatically analyzes configuration files to detect inconsistencies, conflicts, missing keys, and divergent values across environments, versions, or modules.

When should I use Config Consistency Checker?

Config Consistency Checker fits situations like: managing multi-environment configurations; detecting config drift; validating configuration changes; ensuring consistency across microservices.

How do I install Config Consistency Checker in Claude Code?

Run `npx skills add ArabelaTso/Skills-4-SE --skill config-consistency-checker -a claude-code`. Or copy the skill folder (skills/config-consistency-checker in ArabelaTso/Skills-4-SE) into .claude/skills/config-consistency-checker in your project. Claude Code loads it when a task matches its description.

How do I install Config Consistency Checker in Codex?

Run `npx skills add ArabelaTso/Skills-4-SE --skill config-consistency-checker -a codex`. Or copy the skill folder (skills/config-consistency-checker in ArabelaTso/Skills-4-SE) into .agents/skills/config-consistency-checker in your project. Codex loads it when a task matches its description.

Can I use Config Consistency Checker 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 ArabelaTso/Skills-4-SE --skill config-consistency-checker -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/config-consistency-checker, .gemini/skills/config-consistency-checker, .github/skills/config-consistency-checker and .opencode/skills/config-consistency-checker in your project.

What does Config Consistency Checker need to run?

Going by SKILL.md and its folder, Config Consistency Checker needs credentials named DATABASE_PASSWORD, API_KEY and DB_PASSWORD. Our summary lists: A credential in API_KEY.

Does Config Consistency Checker 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 Config Consistency Checker safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Config Consistency Checker use?

Config Consistency Checker is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Config Consistency Checker use?

About 1.2k tokens (SKILL.md is roughly 4.9k 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 Config Consistency Checker?

Skills that share tags, products or a category with Config Consistency Checker: API Security Design (vinayaklatthe/microsoft-security-skills, 175 stars), Firecrawl Build Onboarding (firecrawl/firecrawl, 190k stars), Node Backend Development Guidelines (diet103/claude-code-infrastructure-showcase, 10k stars) and Nodejs Backend Patterns (ever-works/ever-works, 162 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Config Consistency Checker?

ArabelaTso (a GitHub user) maintains it in ArabelaTso/Skills-4-SE, which has 253 GitHub stars. The repository holds 170 skills in this directory. The repository was last updated on August 21, 2026.

Source: ArabelaTso/Skills-4-SE on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.