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This skill equips Claude with deep expertise in managing file uploads and cloud storage solutions like Amazon S3 and Cloudflare R2. It focuses on implementing robust architectures such as presigned URLs and multipart uploads to ensure scalability and avoid server-side performance bottlenecks. Beyond basic implementation, the skill prioritizes security by enforcing magic byte verification, strict file size restrictions, and rigorous filename sanitization to protect against common vulnerabilities like path traversal and malicious file execution.
