Adding Resend to your Claude Code app? Let us review it.
Expert review for Resend integrations built with Claude Code. We fix Claude Code-generated Resend code for security, error handling & production readiness. From $19.
Common Claude Code issues affecting integrations
Over-permissive CORS configuration
Claude Code sometimes sets CORS to allow all origins during development and forgets to restrict it for production, allowing any website to make API requests.
Missing rate limiting
API endpoints are generated without rate limiting, allowing attackers to brute-force auth endpoints or abuse expensive operations.
Over-engineered abstractions
Claude Code creates multiple layers of abstraction, generic utilities, and design patterns for simple problems — making the code harder to understand and maintain.
Resend issues we find in Claude Code apps
API key exposed in client-side code
AI-generated code calls the Resend API directly from the browser, exposing the API key and allowing anyone to send emails from your domain.
Sending from unverified domain
Generated code sends emails from a domain that hasn't been verified in Resend's dashboard, causing all emails to fail or land in spam.
No rate limiting on email-sending endpoints
AI tools create API routes that call Resend without any rate limiting, allowing attackers to abuse your endpoint to send thousands of spam emails on your account.
Start with a self-serve audit
Get a professional review of your Resend integration 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 my Claude Code-built Resend integration?
Yes. We regularly audit Resend integrations in Claude Code-built apps. We check for proper error handling, security best practices, and production-ready configuration.
What Resend issues does Claude Code typically create?
Common issues in Claude Code-generated Resend code include: api key exposed in client-side code, sending from unverified domain, no rate limiting on email-sending endpoints. We fix all of these in our code review.
How much does it cost to fix my Resend integration?
Start with our code audit ($19) to get a complete list of Resend issues. Most integration fixes are included in our Fix & Ship plan ($199). For complex integrations, we provide a custom quote after the audit.
What Resend best practices does Claude Code typically miss?
AI tools often skip webhook signature verification, proper error handling for API failures, retry logic with exponential backoff, and secure token storage for Resend. Our review checks all of these and provides specific fixes.
Related resources
More Claude Code Integrations
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