Cloudflare R2 · Rate Limits

Cloudflare R2 Rate Limits

Rate limits and operational constraints for the Cloudflare R2 object storage APIs, including the S3-compatible API and the Cloudflare REST API.

Cloudflare R2 Rate Limits is the machine-readable rate-limit profile for Cloudflare R2 on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 5 rate-limit definitions.

Tagged areas include Object Storage, Cloud Storage, S3 Compatible, Egress-Free, and Buckets.

5 Limits
Object StorageCloud StorageS3 CompatibleEgress-FreeBucketsDeveloper PlatformCloudflare

Limits

Cloudflare REST API Rate Limit account
1200
1,200 requests per 5-minute window; exceeding returns HTTP 429
Bucket Management Operations account
50
Concurrent Object Writes object
1
Exceeding returns HTTP 429 Too Many Requests
r2.dev Public Endpoint Rate Limit bucket
variable
Handles hundreds of requests per second; exceeding triggers HTTP 429. For production use, Cloudflare recommends custom domains, S3-compatible API, or Workers bindings.
S3-Compatible API account
No documented per-second limit for the S3-compatible API at https://.r2.cloudflarestorage.com; higher throughput available via custom domains

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/cloudflare-r2-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.