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Source-backed platform rule
Cloudflare kv key size limit
See the direct answer, scope, qualifiers, and current official evidence for Cloudflare kv key size limit.
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Direct answer
What is the rule?
Cloudflare Workers KV keys have a stated maximum size of 512 bytes on Free and Paid plans; the specific enforcement action is not stated.
- Scope
- Cloudflare platform limits
- Human verified
- August 14, 2026
- Source checked
- September 3, 2026
Published evidence
Rule details
Structured limit
512 bytes per Workers KV key on both Free and Paid plans. The source does not state the specific enforcement action.
Applicability
Service: Cloudflare Workers KV. Plans: Free and Paid. Basis: each key. Policy version and effective dates: not stated.
Evidence trail
Official sources
- Cloudflare Workers KV limits
Cloudflare · verified August 14, 2026
Attribution and license
Cloudflare Developer Documentation by Cloudflare and contributors: https://github.com/cloudflare/cloudflare-docs/tree/9de0820710d8546f02de7ab8c7b266b3fd115030. Licensed under CC BY 4.0: https://github.com/cloudflare/cloudflare-docs/blob/9de0820710d8546f02de7ab8c7b266b3fd115030/LICENSE. Modified by RuleRoster: RuleRoster extracted and restructured facts into typed rule fields and concise answers. Verified 2026-08-14. No root NOTICE file was present at the reviewed revision. No endorsement by Cloudflare is implied.
Interpretation and accountability
How to use this record
Record dates
- Published
- August 15, 2026
- Human verified
- August 14, 2026
- Source checked
- September 3, 2026
- Review due
- September 4, 2026
Challenge this record
If the source or summary appears wrong, submit precise evidence for human review.