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Limits

Script limits

Cloudflare provides an unlimited number of scripts for Workers for Platforms customers.

cf object

The cf object contains Cloudflare-specific properties of a request. This field is not accessible in user Workers because some fields in this object are sensitive and can be used to manipulate Cloudflare features (for example, cacheKey, resolveOverride, scrapeShield.)

Durable Object namespace limits

Workers for Platforms do not have a limit for the number of Durable Object namespaces.

Cache API

For isolation, caches.default is disabled for namespaced scripts. To learn more about the cache, refer to How the cache Works.

​Tags

You can set a maximum of eight tags per script. Avoid special characters like , and & when naming your tag.

Need a higher limit?

To request an adjustment to a limit, complete the Limit Increase Request Form ↗. If the limit can be increased, Cloudflare will contact you with next steps.

Gradual Deployments

Gradual Deployments is not supported yet for user Workers. Changes made to user Workers create a new version that deployed all-at-once to 100% of traffic.

API Rate Limits

API token limits

TypeLimit
Client API per user1200/5 minutes
Client API per IP200/second
GraphQLVaries by query cost. Max 320/5 min
User API token quota50
Account API token quota500

The global rate limit for the Cloudflare API is 1200 requests per five minute period per user, and applies cumulatively regardless of whether the request is made via the dashboard, API key, or API token.

If you exceed this limit, all API calls for the next five minutes will be blocked, receiving a HTTP 429 - Too Many Requests response.

Some specific API calls have their own limits and are documented separately, such as the following:

Enterprise customers can also contact Cloudflare Support to raise the Client API per user, GraphQL, or API token limits to a higher value.