Update and deploy rulesets You can use the API to update basic properties  of a ruleset (currently only the description) and the list of rules  in the ruleset.
Use one of the following API endpoints:
You cannot update the name of the ruleset or its type. Do not include these fields in the data field of your PUT request. 
Example - Set the rules of a ruleset  Use this API method to set the rules of a ruleset. You must include all the rules you want to associate with the ruleset in every request.Request curl -X PUT \ 
"https://api.cloudflare.com/client/v4/zones/<ZONE_ID>/rulesets/<RULESET_ID>"  \ 
-H  "Authorization: Bearer <API_TOKEN>"  \ 
-d ' { 
   "rules" :   [ 
     { 
       "action" :   "execute" , 
       "action_parameters" :   { 
         "id" :   "<MANAGED_RULESET_ID>" 
       } , 
       "expression" :   "true" 
     } 
   ] 
 
} ' 
Response { 
   "result" :   { 
     "id" :   "<RULESET_ID>" , 
     "name" :   "Zone-level phase entry point" , 
     "description" :   "This ruleset executes a managed ruleset." , 
     "kind" :   "zone" , 
     "version" :   "4" , 
     "rules" :   [ 
       { 
         "id" :   "<RULE_ID>" , 
         "version" :   "2" , 
         "action" :   "execute" , 
         "expression" :   "true" , 
         "action_parameters" :   { 
           "id" :   "<MANAGED_RULESET_ID>" 
         } , 
         "last_updated" :   "2021-03-17T15:42:37.917815Z" 
       } 
     ] , 
     "last_updated" :   "2021-03-17T15:42:37.917815Z" , 
     "phase" :   "http_request_firewall_managed" 
   } , 
   "success" :   true , 
   "errors" :   [ ] , 
   "messages" :   [ ] 
 
} 
 
Example - Deploy a ruleset  To deploy a ruleset, create a rule with "action": "execute" that executes the ruleset, and add the ruleset ID to the action_parameters field in the id parameter.
The following example deploys a managed ruleset to the zone-level http_request_firewall_managed phase of a zone (<ZONE_ID>).Request curl -X PUT \ 
"https://api.cloudflare.com/client/v4/zones/<ZONE_ID>/rulesets/phases/http_request_firewall_managed/entrypoint"  \ 
-H  "Authorization: Bearer <API_TOKEN>"  \ 
-d ' { 
   "rules" :   [ 
     { 
       "action" :   "execute" , 
       "action_parameters" :   { 
         "id" :   "<MANAGED_RULESET_ID>" 
       } , 
       "expression" :   "true" , 
       "description" :   "Execute Cloudflare Managed Ruleset on my phase entry point" 
     } 
   ] 
 
} ' 
Response { 
   "result" :   { 
     "id" :   "<ZONE_PHASE_RULESET_ID>" , 
     "name" :   "Zone-level phase entry point" , 
     "description" :   "" , 
     "kind" :   "zone" , 
     "version" :   "4" , 
     "rules" :   [ 
       { 
         "id" :   "<RULE_ID_1>" , 
         "version" :   "1" , 
         "action" :   "execute" , 
         "action_parameters" :   { 
           "id" :   "<MANAGED_RULESET_ID>" , 
           "version" :   "latest" 
         } , 
         "expression" :   "true" , 
         "description" :   "Execute Cloudflare Managed Ruleset on my phase entry point" , 
         "last_updated" :   "2021-03-21T11:02:08.769537Z" , 
         "ref" :   "<RULE_REF_1>" , 
         "enabled" :   true 
       } 
     ] , 
     "last_updated" :   "2021-03-21T11:02:08.769537Z" , 
     "phase" :   "http_request_firewall_managed" 
   } , 
   "success" :   true , 
   "errors" :   [ ] , 
   "messages" :   [ ] 
 
} 
 
For more information on deploying rulesets, check Deploy rulesets 
Example - Update ruleset description  You can use this API method to update the description of an existing ruleset or phase entry point.You cannot update the description or the rules in a managed ruleset. You can only define overrides  Request curl -X PUT \ 
"https://api.cloudflare.com/client/v4/zones/<ZONE_ID>/rulesets/<RULESET_ID>"  \ 
-H  "Authorization: Bearer <API_TOKEN>"  \ 
-d ' { 
   "description" :   "My updated phase entry point" 
 
} ' 
The response includes the complete ruleset definition, including all the rules.Response { 
   "result" :   { 
     "id" :   "<RULESET_ID>" , 
     "name" :   "Zone entry point" , 
     "description" :   "My updated phase entry point" , 
     "kind" :   "zone" , 
     "version" :   "4" , 
     "rules" :   [ 
       
     ] , 
     "last_updated" :   "2021-03-30T10:49:11.006109Z" , 
     "phase" :   "http_request_firewall_managed" 
   } , 
   "success" :   true , 
   "errors" :   [ ] , 
   "messages" :   [ ] 
 
}