Building a api / backend service with Shopify? Let us review it.
Expert code review for api / backend services built with Shopify. We fix Shopify-specific security gaps, optimize performance, and handle deployment. From $19.
Common Shopify issues we find
Real problems from Shopify codebases we've reviewed.
Slow theme performance
AI-generated Liquid templates with too many nested loops, unoptimized images, render-blocking scripts, and missing lazy loading — increasing page load time and hurting conversion rates.
Broken checkout customizations
Custom checkout scripts or Shopify Functions that break the checkout flow for certain payment methods, shipping options, or edge cases like discount stacking.
Insecure custom app webhooks
Shopify app webhook endpoints without HMAC signature verification, allowing attackers to send fake order, payment, or customer data to your systems.
API rate limit violations
Custom integrations that hit Shopify's API rate limits by making too many requests without proper throttling, causing sync failures and data inconsistencies.
API / Backend Service challenges to solve
Key api / backend service concerns that AI-generated code often misses.
Authentication and API keys
Every endpoint needs to verify the caller's identity. AI tools create endpoints without auth, or with auth that's easy to bypass. You need token-based auth, API key management, and proper session handling.
Input validation
Every parameter, request body, and header value must be validated before use. AI-generated APIs trust client data, which leads to injection attacks, data corruption, and crashes from unexpected input.
Rate limiting and abuse prevention
Without rate limits, anyone can hammer your API — brute-forcing passwords, scraping data, or running up your infrastructure costs. Rate limiting must be per-user and per-endpoint.
Error handling and status codes
APIs should return appropriate HTTP status codes (400 for bad input, 401 for unauthorized, 404 for not found, 500 for server errors) with helpful error messages. AI tools often return 200 for everything or expose internal error details.
What we check
Key areas we review for Shopify api / backend service projects.
Authentication on every endpoint — no unprotected routes
Input validation — every parameter validated with schema
Rate limiting — per-user, per-endpoint limits configured
Error responses — correct status codes, no internal detail leaks
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Start with a self-serve audit
Get a professional review of your Shopify api / backend service project at a fixed price.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Can you review a api / backend service built with Shopify?
Yes. We regularly audit Shopify api / backend service projects and understand the specific patterns and pitfalls of this combination. Our review covers security, performance, and deployment readiness.
What issues do you find in Shopify api / backend services?
Common issues include slow theme performance and broken checkout customizations on the Shopify side, combined with api / backend service-specific concerns like authentication and api keys and input validation. We check for all of these and more.
How do I make my Shopify api / backend service production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For Shopify api / backend service projects, the typical path is: fix security gaps, address api / backend service-specific requirements, optimize Shopify performance, then configure deployment. We provide a fixed quote after the audit.
How long does it take to audit a Shopify api / backend service?
Our code audit delivers a full report within 24 hours. For Shopify api / backend service projects, we check security, architecture, performance, and deployment readiness across all Shopify-specific patterns. Fixes are scoped separately with a fixed quote.
Related resources
Shopify by Use Case
Need help with your Shopify api / backend service?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.