Quick Start

Let’s build a “senior discount” policy step by step.

Step 1: Define the Rule

We want: customers aged 65 or older qualify for a senior discount.

A **Customer** qualifies for senior discount
  if __age__ of **Customer** is greater than or equal to 65.

Let’s break this down:

Part	Meaning
A **Customer**	We’re evaluating a Customer object
qualifies for senior discount	The outcome if conditions pass
__age__	Access the age property
of **Customer**	From the Customer object
is greater than or equal to 65	The comparison
.	End of rule

Step 2: Try It

Interactive Example

Reset

Policy Rule

A **Customer** qualifies for senior discount if __age__ of **Customer** is greater than or equal to 65.

Test Data (JSON)

{ "Customer": { "age": 70 } }

▶ Run

Try changing the age to 50 and running again — the result should flip to Fail.

Step 3: Add More Conditions

Let’s require that the customer also has an active membership:

A **Customer** qualifies for senior discount
  if __age__ of **Customer** is greater than or equal to 65
  and __membership__ of **Customer** is equal to "active".

Interactive Example

Reset

Policy Rule

A **Customer** qualifies for senior discount if __age__ of **Customer** is greater than or equal to 65 and __membership__ of **Customer** is equal to "active".

Test Data (JSON)

{ "Customer": { "age": 70, "membership": "active" } }

▶ Run

Step 4: Call the API Directly

You can evaluate this policy via a simple HTTP call:

curl -X POST https://api.policy.keloran.dev/run \
  -H "Content-Type: application/json" \
  -d '{
    "rule": "A **Customer** qualifies for senior discount if __age__ of **Customer** is greater than or equal to 65.",
    "data": { "Customer": { "age": 70 } }
  }'

Next Steps

• Learn about Core Concepts — selectors, properties, and rules
• Explore Operators — all the ways to compare values
• Try the Playground — experiment freely