Imported from jeremylongshore/tons-of-skills-marketplace (skills/.curated/shopify-policy-guardrails/SKILL.md). Install upstream with npx skills add jeremylongshore/tons-of-skills-marketplace --skill shopify-policy-guardrails. Copyright stays with the author (MIT).

Shopify Policy & Guardrails

Overview

Automated policy enforcement for Shopify apps: secret detection, query cost budgets, App Store compliance checks, and CI policy validation.

Prerequisites

• ESLint configured in project
• Pre-commit hooks infrastructure
• CI/CD pipeline with GitHub Actions
• Shopify app with shopify.app.toml

Instructions

Step 1: Secret Detection Rules

Custom ESLint rule that catches hardcoded Shopify tokens (shpat_*, shpss_*) and API secrets in string literals and template literals.

See Secret Detection ESLint for the complete rule implementation.

Step 2: Query Cost Budget Enforcement

Static analysis of GraphQL queries enforcing budgets: max 100 items per first: param, max 3 levels of nesting, and max 500 estimated cost. Runs at build/test time.

See Query Cost Budget for the complete implementation.

Step 3: Pre-Commit Hooks

Git hooks that scan staged changes for Shopify tokens and block .env files from being committed.

# .pre-commit-config.yaml
repos:
  - repo: local
    hooks:
      - id: shopify-token-scan
        name: Scan for Shopify tokens
        language: system
        entry: bash -c '
          if git diff --cached --diff-filter=d | grep -E "shpat_[a-f0-9]{32}|shpss_[a-f0-9]{32}" ; then
            echo "ERROR: Shopify access token detected in staged changes"
            exit 1
          fi'
        pass_filenames: false

      - id: shopify-env-check
        name: Check .env not staged
        language: system
        entry: bash -c '
          if git diff --cached --name-only | grep -E "^\.env$|^\.env\.local$|^\.env\.production$" ; then
            echo "ERROR: .env file staged for commit"
            exit 1
          fi'
        pass_filenames: false

Step 4: App Store Compliance Checker

Pre-submission script that validates all three GDPR webhooks, token hygiene, CSP headers, and API version stability.

See Compliance Checker for the complete implementation.

Step 5: CI Policy Pipeline

GitHub Actions workflow enforcing token scanning, GDPR webhook configuration, and API version stability on every push and PR.

See CI Policy Pipeline for the complete workflow.

Output

• ESLint rules catching hardcoded tokens
• Query cost budgets enforced
• Pre-commit hooks blocking secret leaks
• App Store compliance checker
• CI policy pipeline preventing violations

Error Handling

Examples

Quick Policy Scan

# One-liner: check for token leaks in staged changes
git diff --cached | grep -E "shpat_|shpss_" && echo "TOKEN LEAK!" || echo "Clean"

# Check GDPR compliance
grep -c "customers/data_request\|customers/redact\|shop/redact" shopify.app.toml
# Should output: 3

Resources

• Shopify App Store Requirements
• ESLint Plugin Development
• git-secrets