twelve-factor-auditor
by Julian
Audit applications against 12-Factor methodology to identify architectural risks and generate cloud-native fix plans.
- Detect hardcoded credentials and configuration anti-patterns
- Fix "works on my machine" issues by auditing dev/prod parity
- Improve application reliability with graceful shutdown and disposability audits
$15
· or 75 creditsSecure checkout via Stripe
Included in download
- Detect hardcoded credentials and configuration anti-patterns
- Fix "works on my machine" issues by auditing dev/prod parity
- file_read, file_write automation included
- Ready for Works with VS Code
Sample input
Node.js Express API. Deployed on a VPS (Ubuntu). Here's the relevant code:
// config.js const config = { db: 'postgres://admin:secret123@localhost:5432/myapp', port: 3000, env: 'production' }
// app.js (logger) const winston = require('winston'); const logger = winston.createLogger({ transports: [new winston.transports.File({ filename: 'app.log' })] });
process.on('SIGTERM', () => { console.log('shutting down'); });
package.json has all dependencies listed. No Dockerfile. SQLite in dev, Postgres in prod.
Sample output
12-FACTOR AUDIT REPORT ══════════════════════════════════════════════════ App: Node.js Express API Language/Framework: Node.js / Express Deployment Target: VPS (Ubuntu) ══════════════════════════════════════════════════
COMPLIANCE SUMMARY ────────────────── PASS: 6 factors PARTIAL: 3 factors FAIL: 3 factors Score: 62% compliant
TOP 3 PRIORITY FIXES ────────────────────
- Factor 3 — Move db credentials out of config.js into process.env.DATABASE_URL
- Factor 11 — Replace File transport with Console transport (stdout only)
- Factor 9 — Complete the SIGTERM handler: close DB connections, drain in-flight requests
DETAILED FINDINGS ────────────────────────────────────────────────── FACTOR 1 — CODEBASE: PASS Finding: No issues detected. Fix: No action required. [... abbreviated ...]
twelve-factor-auditor
by Julian
Audit applications against 12-Factor methodology to identify architectural risks and generate cloud-native fix plans.
$15
· or 75 creditsSecure checkout via Stripe
Also available in a bundle
Included in download
- Detect hardcoded credentials and configuration anti-patterns
- Fix "works on my machine" issues by auditing dev/prod parity
- file_read, file_write automation included
- Ready for Works with VS Code
- Instant install
Sample input
Node.js Express API. Deployed on a VPS (Ubuntu). Here's the relevant code:
// config.js const config = { db: 'postgres://admin:secret123@localhost:5432/myapp', port: 3000, env: 'production' }
// app.js (logger) const winston = require('winston'); const logger = winston.createLogger({ transports: [new winston.transports.File({ filename: 'app.log' })] });
process.on('SIGTERM', () => { console.log('shutting down'); });
package.json has all dependencies listed. No Dockerfile. SQLite in dev, Postgres in prod.
Sample output
12-FACTOR AUDIT REPORT ══════════════════════════════════════════════════ App: Node.js Express API Language/Framework: Node.js / Express Deployment Target: VPS (Ubuntu) ══════════════════════════════════════════════════
COMPLIANCE SUMMARY ────────────────── PASS: 6 factors PARTIAL: 3 factors FAIL: 3 factors Score: 62% compliant
TOP 3 PRIORITY FIXES ────────────────────
- Factor 3 — Move db credentials out of config.js into process.env.DATABASE_URL
- Factor 11 — Replace File transport with Console transport (stdout only)
- Factor 9 — Complete the SIGTERM handler: close DB connections, drain in-flight requests
DETAILED FINDINGS ────────────────────────────────────────────────── FACTOR 1 — CODEBASE: PASS Finding: No issues detected. Fix: No action required. [... abbreviated ...]
About This Skill
Transform Your Apps into Cloud-Native Powerhouses
Modern cloud infrastructure demands more than just code that "works locally." The 12-Factor Auditor is a specialized development tool designed to bridge the gap between local development and production-ready architecture. It performs a deep-dive analysis of your application's structure, configuration management, and operational patterns against the industry-standard methodology pioneered by Heroku.
Detailed Compliance Auditing
This skill goes beyond generic advice. It analyzes your specific language (Node.js, Python, Go, etc.) and deployment targets (Kubernetes, AWS Lambda, Docker) to identify architectural debt. It doesn't just tell you what's wrong; it provides a structured 12-point report including:
- Precise PASS/FAIL Ratings: Transparent evaluation of every factor from dependencies to log management.
- Actionable Remediation: Specific code and configuration fixes tailored to your codebase.
- Risk Prioritization: Identification of the top 3 critical issues that most endanger production stability.
- Compliance Scoring: A quantitative metric to track your progress toward cloud-native maturity.
Why It Beats Manual Prompting
While a general AI might give you a summary of the 12 factors, this skill enforces a rigorous, multi-phase audit workflow. It acts as an experienced SRE, specifically hunting for common pitfalls like "works on my machine" database discrepancies, improper SIGTERM handling, and hardcoded secrets that a standard prompt would likely overlook.
Use Cases
- Detect hardcoded credentials and configuration anti-patterns
- Fix "works on my machine" issues by auditing dev/prod parity
- Improve application reliability with graceful shutdown and disposability audits
- Transition legacy applications to cloud-native or containerized environments
- Generate structured compliance scores for engineering leadership reviews
- Audit my app for 12-factor compliance
- Check if my app follows twelve-factor best practices
- Review my config management and environment variables
Known Limitations
Edge case 1: Serverless functions (AWS Lambda, Cloudflare Workers): Factor 7 (Port Binding) and Factor 8 (Concurrency) don't apply — rate both N/A.
How to Install
mkdir -p ~/.claude/skills && curl -sL https://www.agensi.io/api/install/twelve-factor-auditor -o /tmp/twelve-factor-auditor.zip && unzip -o /tmp/twelve-factor-auditor.zip -d ~/.claude/skills && rm /tmp/twelve-factor-auditor.zipFree skills install directly. Paid skills require purchase - use the download button above after buying.
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Works with VS Code/GitHub Copilot, Cursor, OpenAI Codex, Google Antigravity, Claude Code, and any agent supporting the AgentSkills open standard. Install at .agents/skills/twelve-factor-auditor/SKILL.md.
Creator
Building AI skills that encode proven frameworks. Each skill distills industry standards into triggerable workflows for developers and founders. I package battle-tested mental models into AI skills. Hope you like my skills. Much love from Germany, Julian <3
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