config-manager

config-manager is a skill for Claude Code, Codex from eddiebelaval/squire. It costs 39 tokens per session (3,841 once invoked), scanned A, original, MIT.

A guide for managing application settings across environments such as local development, testing, and production. It covers environment variables, configuration files, secrets, validation, and configuration priorities.

In plain words
What is it for?
Use it to design configuration systems, handle .env files and environment variables, manage secrets, validate settings, and organize multi-environment deployments.
Why use it?
Applications need different settings in different environments, and placing passwords or API keys in source code creates security and maintenance problems. This helps keep configuration separate, validated, and easier to change.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is file: ./secrets/db_password.txt.

Good fit Use it to design configuration systems, handle .env files and environment variables, manage secrets, validate settings, and organize multi-environment deployments.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/eddiebelaval/squire
agentmods
npx agentmods add skills/eddiebelaval/squire/config-manager

Made for: Claude Code, Codex.

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 config-manager

README.md
[![agentmods](https://agentmods.dev/badge/skills/eddiebelaval/squire/config-manager/github.svg)](https://agentmods.dev/skills/eddiebelaval/squire/config-manager)
Your own site
<a href="https://agentmods.dev/skills/eddiebelaval/squire/config-manager"><img src="https://agentmods.dev/badge/skills/eddiebelaval/squire/config-manager/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.

agentmods 80×15 button for config-manager

Your own site · 80×15
<a href="https://agentmods.dev/skills/eddiebelaval/squire/config-manager"><img src="https://agentmods.dev/badge/skills/eddiebelaval/squire/config-manager.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,841 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 15 findings, up to high

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 →

  • high Privilege Escalation · line 3
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 57
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 61
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 108
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 396
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 409
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 424
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 109
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 410
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 122
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 132
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 431
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • medium Tool Misuse · line 66
    Tool defaults are unsafe or overly permissive (e.g. disabled TLS verification, no authentication, world-writable permissions). Unsafe defaults widen the attack surface.
    Fix: Override unsafe defaults with secure settings (verify=True, auth required, restrictive permissions). Review and harden all tool configurations.
  • medium Tool Misuse · line 123
    Tool defaults are unsafe or overly permissive (e.g. disabled TLS verification, no authentication, world-writable permissions). Unsafe defaults widen the attack surface.
    Fix: Override unsafe defaults with secure settings (verify=True, auth required, restrictive permissions). Review and harden all tool configurations.
  • medium Tool Misuse · line 274
    Tool defaults are unsafe or overly permissive (e.g. disabled TLS verification, no authentication, world-writable permissions). Unsafe defaults widen the attack surface.
    Fix: Override unsafe defaults with secure settings (verify=True, auth required, restrictive permissions). Review and harden all tool configurations.
How audits are shown
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 $0.00039 $0.03841
Opus 5 $0.00019 $0.01920
Sonnet 5 $0.00008 $0.00768
Haiku 4.5 $0.00004 $0.00384

Measured 7d ago against content hash 22d3f808fa76, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

config-manager 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 7d 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.

skills/config-manager/SKILL.md · 679 lines

How it starts

The opening of the file, as written. The whole thing — 679 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Configuration Manager Skill

Core Workflows

Workflow 1: Primary Action

  1. Analyze the input and context
  2. Validate prerequisites are met
  3. Execute the core operation
  4. Verify the output meets expectations
  5. Report results

Overview

This skill helps you design and implement robust configuration management for applications. Covers environment variables, config files, secrets management, validation, type safety, and multi-environment deployments.

Configuration Philosophy

Twelve-Factor App Principles

  1. Store config in the environment: Separate config from code
  2. Strict separation: Config that varies between deploys should be in env vars
  3. No secrets in code: Ever. Period.

Configuration Hierarchy

Priority (highest to lowest):
1. Command-line arguments
2. Environment variables
3. Environment-specific config files (.env.local)
4. Default config files (.env)
5. Application defaults in code

What Goes Where

  • Environment Variables: API keys, database URLs, feature flags
  • Config Files: Non-sensitive defaults, complex structures
  • Secrets Manager: Production credentials, API tokens
  • Code: Application logic, never secrets

Environment Variables

.env File Structure

# .env.example - Commit this file as documentation
# Copy to .env and fill in values

# ===================
# Application
# ===================
NODE_ENV=development
PORT=3000
APP_URL=http://localhost:3000

# ===================
# Database
# ===================
DATABASE_URL=postgresql://user:password@localhost:5432/mydb
DATABASE_POOL_SIZE=10

# ===================
# Authentication
# ===================
# Get from Supabase Dashboard > Settings > API
NEXT_PUBLIC_SUPABASE_URL=https://xxx.supabase.co
NEXT_PUBLIC_SUPABASE_ANON_KEY=your-anon-key
SUPABASE_SERVICE_ROLE_KEY=your-service-role-key

# ===================
# External Services
# ===================
STRIPE_SECRET_KEY=sk_test_xxx
STRIPE_WEBHOOK_SECRET=whsec_xxx
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=pk_test_xxx

# ===================
# Email
# ===================
RESEND_API_KEY=re_xxx
[email protected]

# ===================
# Feature Flags
# ===================
ENABLE_ANALYTICS=true
ENABLE_BETA_FEATURES=false

Read the full file on GitHub · 679 lines

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. 7d ago First seen · 679 lines · 39 tokens per session scan A 22d3f808fa76

Subscribe to this mod's changes

config-manager is a skill published in the GitHub repository eddiebelaval/squire (21 stars, last pushed 25d ago), licensed MIT. It adds 39 tokens to every session and 3,841 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 2026-09-03.