r2-storage-manager

This skill helps manage Cloudflare R2 storage and prevents common CORS/checksum issues.

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Install skill "r2-storage-manager" with this command: npx skills add amirrudd/flyerboard/amirrudd-flyerboard-r2-storage-manager

R2 Storage Manager

This skill helps manage Cloudflare R2 storage and prevents common CORS/checksum issues.

Critical Patterns

  1. CORS-Safe Presigned URLs

Always disable checksums and unhoist specific headers.

{ ChecksumAlgorithm: undefined, unhoistableHeaders: new Set(["x-amz-checksum-crc32"]) }

  1. Image Quality Standards

Ensure all uploads are 90% WebP. Context: features/image-upload.md

Scripts

check-r2-env

Verifies that all required R2 environment variables are present in .env.local .

Command:

./.agent/skills/r2-storage-manager/scripts/check-env.sh

list-bucket-summary (via Node)

Provides a summary of objects in the bucket (requires valid AWS/R2 credentials).

Command:

node ./.agent/skills/r2-storage-manager/scripts/list-bucket.mjs

Common Fixes

403 Forbidden (CORS)

  • Check if ChecksumAlgorithm is set to undefined .

  • Check if x-amz-checksum-crc32 is unhoisted.

  • Verify the bucket CORS policy allows the current origin.

Source Transparency

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