Post-decision Action Rules

In addition to Decision rules Manage rules, Fraud Protection also allows you to configure Post-decision action rules for an assessment. Post-decision action rules are evaluated after Decision rules, but before the API response has been returned. These rules can be used to perform actions that you want to take each time an assessment is evaluated. You can use the decision of the assessment call in an action rule also. For example, if you always send additional information as part of your API response anytime a particular decision is taken, or if you always send or receive data from an External Call every time assessment is evaluated.

Note

Action rules are available for Assessments only.

Defining an action rule

Action rules consist of clauses, and are defined by the DO and WHEN keywords. They have the following basic structure.

DO <action>
WHEN <condition>

DO is a keyword unique to action rules. You can't use this keyword in Decision rules. Only Action functions can be used following the DO keyword. For more information on available Action functions, see Language reference guide

Example

DO SetResponse(test=true) 
WHEN Response.Decision() == "approve"

If the assessment call decision is Approve, the API response will show following fields:

"customProperties": {
        "test": true
    },

• Response.Decision() allows you to access the decision that was made on the assessment call. • SetResponse() method can only be use after DO keyword. It adds key value pairs to API response.

Note

DO keyword and SetResponse method are available in action rules only.

SetResponse Syntax

Function call	API response in Assessments
SetResponse(a="b", x="y")	"CustomProperties": {     "a" : "b",     "x" : "y" }
SetResponse("newSection", a="b", x="y")	"CustomProperties": {      "newSection":{      "a" : "b",      "x" : "y"     } }

Create and Manage Post-decision Action Rules

To create or manage action rules, go to Rules tab. To create a new Post-Decision Action rule, select + New rule, and then select Post-decision action.

• No rule evaluation is available in debugging experience.
• No visual view is available for action rules.

The Rules tab shows a list of the rules that have been configured for an assessment type. These rules are divided into three sections: Post-decision actions, Published Rules and Drafts.

You can view the following information for each rule or draft:

• The name
• The rule type (Decision rule -or- Post-decision action)
• The condition that you created
• The status: Active or Inactive

You can also select the tile for each rule to expand it and show additional information. Here are some examples:

• The description
• The number of clauses in the rule
• Who last updated the rule
• When the rule was last updated

Note

On the Rules tab, published rules are listed in the order that they are run in.

Rule evaluation behavior

In a multi-hierarchy environment, rules are executed in the following order:

1. Evaluate all active parent Decision rules.
2. Evaluate all active child Decision rules.
3. Evaluate all active parent Post-decision Action rules.
4. Evaluate all active child Post-decision Action rules.

Post-decision Action Rules Examples

Calling an external call

DO SetResponse(visibility = External.Weather("seattle").visibility)

Calling a shared assessment

LET $response = Assessments.VerifyCustomer.evaluate(user = @@"user")
DO SetResponse(test=true)
WHEN $response.decisionDetails.MerchantRuleDecision =="Approve"