Shopify Production Checklist Skill

Shopify Production Checklist

Overview

Complete pre-launch checklist for deploying Shopify apps to production and submitting to the Shopify App Store.

Prerequisites

Staging environment tested and verified
Shopify Partner account with app configured
All development and staging tests passing

Instructions

Step 1: API and Authentication

[ ] Using a recent stable API version (e.g., 2025-04), not unstable
[ ] Access token stored in secure environment variables (never in code)
[ ] API secret stored securely for webhook HMAC verification
[ ] OAuth flow tested with a fresh install on a clean dev store
[ ] Session persistence implemented (database or Redis, not in-memory)
[ ] Token refresh/re-auth handled for expired sessions
[ ] APP_UNINSTALLED webhook handler cleans up sessions

Step 2: Mandatory GDPR Compliance

[ ] customers/data_request webhook handler implemented
[ ] customers/redact webhook handler implemented
[ ] shop/redact webhook handler implemented (fires 48h after uninstall)
[ ] All three configured in shopify.app.toml
[ ] Handlers respond with HTTP 200 within 5 seconds
[ ] Customer data deletion actually works (test it!)

Step 3: Webhook Security

[ ] All webhooks verify X-Shopify-Hmac-Sha256 using HMAC-SHA256
[ ] Using crypto.timingSafeEqual() for signature comparison
[ ] Webhook endpoints use raw body parsing (not JSON middleware)
[ ] Idempotency: duplicate webhook deliveries handled gracefully

Step 4: Rate Limit Resilience

[ ] GraphQL queries optimized (check requestedQueryCost with debug header)
[ ] Retry logic with exponential backoff for 429 / THROTTLED responses
[ ] Bulk operations used for large data exports instead of paginated queries
[ ] No unbounded loops that could exhaust rate limits

Step 5: Error Handling

[ ] All GraphQL mutations check userErrors array (200 with errors!)
[ ] HTTP 4xx/5xx errors caught and logged with X-Request-Id
[ ] Graceful degradation when Shopify is unavailable
[ ] No PII logged (customer emails, addresses, phone numbers)

Step 6: App Store Submission Requirements

[ ] App listing has clear name, description, and screenshots
[ ] Privacy policy URL provided
[ ] App has proper onboarding flow for new merchants
[ ] Embedded app uses App Bridge for navigation (no full-page redirects)
[ ] CSP headers set: frame-ancestors https://*.myshopify.com https://admin.shopify.com
[ ] App works on both desktop and mobile admin
[ ] Loading states shown during API calls (no blank screens)

Step 7: API Version Management

# Check which API versions your store supports
curl -s -H "X-Shopify-Access-Token: $TOKEN" \
  "https://$STORE/admin/api/versions.json" \
  | jq '.supported_versions[] | select(.supported == true) | .handle'

# Shopify deprecates versions ~12 months after release
# Set a calendar reminder to upgrade quarterly

Step 8: Health Check Endpoint

Express endpoint that tests Shopify API connectivity and database availability, returning structured status with latency metrics.

See Health Check Endpoint for the complete implementation.

Output

All checklist items verified
Health check endpoint operational
GDPR compliance webhooks functional
App ready for production traffic or App Store submission

Error Handling

| Alert | Condition | Severity | |-------|-----------|----------| | Shopify API down | 5xx errors > 5/min | P1 - Critical | | Auth failures | 401 errors > 0 | P1 - Token may be revoked | | Rate limited | THROTTLED > 5/min | P2 - Reduce query cost | | High latency | p95 > 3000ms | P2 - Check query complexity | | Webhook failures | Delivery success < 95% | P2 - Check endpoint health |

Examples

Pre-Deploy Smoke Test

Bash script that validates Shopify auth and API scopes before deploying to production.

See Pre-Deploy Smoke Test for the complete script.

Agent Skills: Shopify Production Checklist

Install this agent skill to your local

Skill Files