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--- description: How phases organize rule execution in the Ruleset Engine request lifecycle. title: Phases image: https://developers.cloudflare.com/og-docs.png --- [Skip to content](#main-content) > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/ruleset-engine/llms.txt > Use this file to discover all available pages before exploring further. # Phases Last updated Apr 16, 2026|Copy as Markdown|[View as Markdown](https://developers.cloudflare.com/ruleset-engine/about/phases/index.md)|[Agent setup](https://developers.cloudflare.com/agent-setup/) A phase defines a stage in the life of a request where you can execute [rulesets](https://developers.cloudflare.com/ruleset-engine/about/rulesets/). Phases are defined by Cloudflare and cannot be modified. Phases exist at two levels: * At the [account](https://developers.cloudflare.com/fundamentals/concepts/accounts-and-zones/#accounts) level * At the [zone](https://developers.cloudflare.com/fundamentals/concepts/accounts-and-zones/#zones) level For the same phase, rules defined at the account level are evaluated before the rules defined at the zone level. Each phase has at most one [entry point ruleset](https://developers.cloudflare.com/ruleset-engine/about/rulesets/#entry-point-ruleset) at the account and zone level. Note Currently, phases at the account level are only available in Enterprise plans. The following diagram outlines the request handling process where requests go through the available phases:  Cloudflare products are specific to one or more phases, and they add support for different features. Check the documentation for each Cloudflare product for details on the applicable phases. Refer to [Phases list](https://developers.cloudflare.com/ruleset-engine/reference/phases-list/) for a list of phases and their corresponding Cloudflare products. Was this helpful? YesNo ## On this page [Docs](https://developers.cloudflare.com/) ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/ruleset-engine/about/phases/#page","headline":"Phases · Cloudflare Ruleset Engine docs","description":"How phases organize rule execution in the Ruleset Engine request lifecycle.","url":"https://developers.cloudflare.com/ruleset-engine/about/phases/","inLanguage":"en","image":"https://developers.cloudflare.com/og-docs.png","dateModified":"2026-04-16","publisher":{"@type":"Organization","name":"Cloudflare","url":"https://www.cloudflare.com/"},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}} ```
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