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Action argument is mandatory.
target
: one of
cf-error:1000s
block:ip-ban
block:rate-limit
block:client-auth
block:basic-sec-captcha
block:country-captcha
block:adv-sec-captcha
block:waf
block:iuam-basic
cf-error:500s
always-online:no-copy
phishing:warn
regulation:block
url
: custom template URL to fetch (optional, uses default template when omitted)