Bolt
storage
Cloud Storage Permissions Misconfigured in Bolt App
Your Bolt.new application fails to upload, read, or delete files from cloud storage. Users get permission denied errors when trying to upload profile pictures, access shared documents, or view images that should be publicly visible.
Cloud storage services like Supabase Storage and AWS S3 use policy-based access control. If these policies are too restrictive, legitimate operations fail. If they're too permissive, anyone on the internet can read or modify your files. Bolt's AI often generates storage code without configuring the bucket policies correctly.
This typically surfaces right after connecting cloud storage: uploads fail with RLS policy violations, images return 403 errors, or users can see other users' private files because the policies are set to public.
Error Messages You Might See
StorageApiError: new row violates row-level security policy
403 Forbidden: Access denied to storage object
Error: Bucket not found
StorageApiError: The resource already exists
Policy check failed for storage.objects
Common Causes
- Supabase RLS not configured — Storage bucket has Row Level Security enabled but no policies defined, blocking all operations
- Bucket set to private without access policies — The bucket is private (correct) but no policies allow authenticated users to upload or read their files
- Public bucket exposing all files — The bucket is set to public, letting anyone access any uploaded file including private user documents
- Wrong storage bucket name — Code references a bucket name that doesn't exist or is misspelled in the Supabase dashboard
- Service role key used on client — The Supabase service_role key bypasses RLS in development but the anon key used in production respects RLS policies
How to Fix It
- Create proper RLS policies — In Supabase dashboard, add storage policies: allow authenticated users to upload to their own folder (auth.uid()::text = (storage.foldername(name))[1])
- Set bucket visibility correctly — Use private buckets for user files and create signed URLs for access: const { data } = await supabase.storage.from('private').createSignedUrl(path, 3600)
- Use folder-based isolation — Store files in user-specific folders: uploads/{userId}/filename.jpg and restrict access by folder ownership
- Test with anon key — Always test storage operations with the anon key, not service_role, to catch RLS issues before production
- Add public bucket for assets — Create a separate public bucket for truly public assets like product images, and keep user uploads in private buckets
Real developers can help you.
Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
Basel Issmail
’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems.
My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale.
In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals.
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Dor Yaloz
SW engineer with 6+ years of experience,
I worked with React/Node/Python
did projects with React+Capacitor.js for ios
Supabase expert
Nam Tran
10 years as fullstack developer
Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
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rayush33
JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems
Milan Surelia
Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems.
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MFox
Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.
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Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
Should my Supabase Storage bucket be public or private?
Use private buckets for user-uploaded content (profile photos, documents). Use public buckets only for assets that genuinely need to be accessible to anyone (product images, marketing assets). Always configure RLS policies regardless of visibility.
Why does storage work in development but not production?
In development, you might be using the service_role key which bypasses all RLS policies. In production, the anon key is used and respects RLS. Create proper storage policies that allow authenticated users to manage their own files.