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description=Create rules that examine incoming HTTP traffic against a set of powerful filters to block, challenge, log, or allow matching requests.;

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manage rules via the apis cloudflare firewall rules docs 31 captures 11 apr 2020 10 jun 2026 feb mar apr 01 2020 2021 2022 success fail about this capture timestamps the wayback machine http web archive org web 20210301013503 https developers cloudflare com firewall api this app works best with javascript enabled skip to content cloudflare docs logomark cloudflare docs cloudflare firewall logo firewall navigation menu icon open external link cloudflare docs logomark cloudflare docs cloudflare firewall logo firewall dropdown icon firewall menu cloudflare homepage welcome expand about about fields and expressions actions order and priority rules lists api shield expand manage rules in the dashboard manage rules in the dashboard create edit and delete rules edit rule expressions preview rules expand use rules lists use rules lists manage lists manage list items ip addresses use lists in expressions create an api shield rule collapse manage rules via the apis manage rules via the apis expand firewall rules api firewall rules api json object endpoints post example get examples put examples delete examples expand cloudflare filters api cloudflare filters api what is a filter json object endpoints post example get examples put examples delete examples expression validation expand rules lists api rules lists api json object endpoints call sequence expand common use cases common use cases block microsoft exchange autodiscover requests block requests based on ip reputation challenge bad bots exempt partners from hotlink protection require a specific cookie require a valid hmac token require a valid client certificate require specific http headers require specific http ports site administration require known ip addresses stop r u dead yet r u d y attacks update firewall rules for customers or partners expand firewall rules language firewall rules language fields operators grouping symbols values functions expand rulesets beta rulesets beta view rulesets view root rulesets configure root rulesets deploy rulesets expand work with custom rulesets work with custom rulesets create a custom ruleset add rules to a custom ruleset deploy a custom ruleset from your root ruleset expand work with managed rulesets work with managed rulesets deploy a managed ruleset override a managed ruleset expand workflow examples workflow examples set wordpress rules to block enable only joomla rules enable only selected rules deploy a managed ruleset with ruleset category and rule overrides deploy managed and custom rulesets expand rulesets api rulesets api json object endpoints get examples post example put example known issues and faq search icon depiction of a magnifying glass github icon visit firewall on github light theme icon depiction of a sun dark theme icon depiction of a moon set theme to dark d manage rules via the apis when it comes to programmatic rule management cloudflare offers apis that work together to achieve the same effect as the ui based firewall rules feature of the cloudflare dashboard firewall app these apis are the firewall rules api to manage rules and their actions based on criteria separately defined through filters the rules list api to manage named lists of ip addresses that you can use within firewall rules to filter traffic the cloudflare filters api to manage the filters that enable rule matching edit on github external link icon open external link updated 15 hours ago