Fix Your AI-Built Cloudflare R2 Integration
S3-compatible object storage with zero egress fees. AI tools misconfigure worker bindings, generate incorrect S3 SDK configurations, and skip access controls.
Common Cloudflare R2 issues we find
Problems specific to AI-generated Cloudflare R2 integrations.
S3 SDK configured with wrong endpoint format
AI-generated code uses incorrect R2 endpoint URLs (missing account ID, wrong region, or using AWS endpoints), causing all S3-compatible API calls to fail.
R2 credentials exposed in client-side code
Generated code includes R2 access key and secret key in the frontend bundle instead of keeping them server-side or using Cloudflare Workers with bindings.
Worker bindings not configured in wrangler.toml
AI tools write Worker code that references R2 bindings but don't add the corresponding [[r2_buckets]] configuration in wrangler.toml, causing runtime binding errors.
Public bucket access misconfigured
Generated code assumes a custom domain is set up for public access when it isn't, or configures the R2 bucket as fully public when it should be private with presigned URLs.
Missing multipart upload for large files
AI tools use simple PutObject for all file sizes, failing for files over 5GB and creating slow uploads for files over 100MB that should use multipart upload.
Start with a self-serve audit
Get a professional review of your Cloudflare R2 integration at a fixed price.
Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 checks
- SSL/TLS analysis
- Security headers
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerabilities
- Code quality review
- Dependency audit
- AI pattern 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.
Get a clear plan
We respond in 24 hours with scope, timeline, and cost.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Why is my R2 S3 SDK connection failing?
AI tools usually get the endpoint URL wrong. The correct format is https://<ACCOUNT_ID>.r2.cloudflarestorage.com. You also need to set the region to 'auto' and ensure your API token has the correct R2 permissions. We debug and fix the full connection setup.
Should I use S3 SDK or Cloudflare Workers for R2 access?
If your code runs on Cloudflare Workers, use native R2 bindings for better performance and no credential management. For external servers, use the S3 SDK with R2 endpoint. AI tools often use the wrong approach for the deployment target.
How do I serve R2 files securely to authenticated users?
AI tools either make the bucket fully public or generate presigned URLs incorrectly. The recommended approach is a Cloudflare Worker that checks authentication and serves files from R2 using the binding, or correctly configured presigned URLs with short expiration times.
Related resources
Other Integrations
Need help with your Cloudflare R2 integration?
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