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Querying Entitlements with the KOTS License API

This topic describes how to use the Replicated KOTS License API to query license fields during runtme. The information in this topic applies to applications installed with KOTS.

important

Using the KOTS License API to check entitlements during runtime is not recommended for new applications distributed with Replciated. Instead, Replicated recommends that you include the Replicated SDK with your application and query entitlements during runtime using the SDK in-cluster API. See Checking Entitlements with the Replicated SDK.

Overview​

KOTS includes default logic to control access to features in the Replicated admin console and kots CLI based on the values for the built-in fields in the customer's license. For example, by default, KOTS uses the built-in expires_at field to prevent an instance from receiving updates when the customer license expires. You can add custom logic to your application to control the behavior of your application based on the built-in fields or any of the custom fields that you create.

For more information about creating custom license fields, see Managing Custom License Fields. For more information about the built-in license fields, see Built-In License Fields.

The Replicated admin console runs on the customer's cluster and provides entitlement information during application runtime. You can query the admin console /license/v1/license endpoint to enforce entitlements at runtime.

Query Fields​

To reference license fields at runtime, send an HTTP request to the admin console /license/v1/license endpoint at the following location:

http://kotsadm:3000/license/v1/license

The query returns a response in YAML format. For example:

{"license_id":"WicPRaoCv1pJ57ZMf-iYRxTj25eZalw3",
"installation_id":"a4r1s31mj48qw03b5vwbxvm5x0fqtdl6",
"assignee":"FirstCustomer",
"release_channel":"Unstable",
"license_type":"trial",
"expiration_time":"2026-01-23T00:00:00Z",
"fields":[
  {"field":"Customer ID","title":"Customer ID (Internal)","type":"Integer","value":121,"hide_from_customer":true},
  {"field":"Modules","title":"Enabled Modules","type":"String","value":"Analytics, Integration"}]}

Parse the API Response​

To return a license field value, parse the response using the name of the license field.

For example, the following Javascript parses the response for the value of a seat_count custom field:

import * as rp from "request-promise";

rp({
  uri: "http://kotsadm:3000/license/v1/license",
  json: true
}).then(license => {
  const seatCount = license.fields.find((field) => {
    return field.field === "seat_count";
  });
  console.log(seatCount.value);
}).catch(err => {
  // Handle error response from `kotsadm`
});