Does this skill handle R2 CORS configuration errors?

Yes, it specifically addresses the format differences between the Wrangler CLI and the Cloudflare Dashboard UI to prevent 403 and configuration errors.

What permissions are required for Wrangler R2 operations?

For CLI operations, R2 tokens must have 'Admin Read & Write' permissions. 'Object Read & Write' tokens will frequently cause 403 Forbidden errors during bucket management.

Can I use presigned URLs with my custom domain?

Presigned URLs must be generated using the R2 S3 API domain; however, the skill provides a pattern to upload via the S3 domain and serve content via a custom domain.

How does this skill handle large file uploads?

The skill provides a complete implementation pattern for Multipart Uploads, which is recommended for any files over 100MB to ensure reliability and speed.

Cloudflare R2 Storage Integration

Name: Cloudflare R2 Storage Integration
Author: evolv3ai

byevolv3ai

0•

Cloud Infrastructure

Integrates Cloudflare R2 object storage with Workers to manage S3-compatible file uploads, multipart transfers, and CORS configurations.

This skill provides production-ready implementation patterns for Cloudflare R2, enabling seamless object storage management directly within the Cloudflare edge ecosystem. It guides developers through complex tasks such as handling multipart uploads for large files, generating secure server-side presigned URLs, and resolving common API permission conflicts. By providing standardized code for CRUD operations and metadata management, this skill ensures robust data handling while avoiding frequent pitfalls related to CORS formatting and R2-specific rate limits.

Key Features

01Dual-format CORS configuration guidance for both Wrangler CLI and Dashboard UI.

020 GitHub stars

03Support for multipart uploads to handle files larger than 100MB with resumable logic.

04Secure presigned URL generation patterns using the S3-compatible API domain.

05Implementation of robust retry logic and error handling for platform-specific R2 errors.

06Full lifecycle management for R2 buckets including put, get, head, and delete operations.

Use Cases

01Managing high-volume data ingestion and metadata indexing for serverless applications.

02Implementing secure client-side file uploads using authenticated presigned URLs.

03Building serverless image and video hosting platforms with global edge delivery.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add evolv3ai/claude-skills-archive cloudflare-r2

For use in Claude.ai and ChatGPT

Download Skill