Cloudflare R2

Cloud Storage

Zero egress fee cloud storage (S3-compatible)

Cloudflare R2 is an S3-compatible object storage service that charges zero egress bandwidth fees. Perfect for serving media and assets.

Details

Auth Type
AWS Signature Version 4 (Access Key + Secret)
Rate Limit
1000 req/s
Pricing
$0.015/GB storage; Zero egress fees

AWS Signature Version 4 (Access Key + Secret)

1. Go to Cloudflare dashboard > R2
2. Select Manage R2 API Tokens
3. Create a token and copy Access + Secret keys

Getting Started

Try It Instantly

Click "Try It" above to test the API in the playground

Add to Your Agent

Click "Add to Agent" to get your API key and integrate

Common Use Cases

• Media hosting
• Data lakes
• Zero-egress file delivery
• E-commerce assets
• Log storage

💻 Code Examples

Get started quickly with these code examples in your favorite language

curl -X GET \
  'https://www.callio.dev/api/proxy/cloudflare-r2/forward?target=https%3A%2F%2F%3Caccount_id%3E.r2.cloudflarestorage.com%2Fendpoint' \
  -H 'Authorization: Bearer YOUR_CALLIO_KEY' \
  -H 'Content-Type: application/json'

💡 Tip: Replace YOUR_CALLIO_KEY with your actual Callio API key from the dashboard.

Ready to integrate Cloudflare R2?

Test endpoints live or generate your API key and start building in minutes.