# Testing
source: https://developer.mastercard.com/consumer-clarity/documentation/testing/index.md

## Overview {#overview}

This section provides test cases to show the responses you can expect to receive from some example requests you might send to the Consumer Clarity and Smart Subscriptions APIs. We also provide guidance for using our [Postman Collection](https://developer.mastercard.com/consumer-clarity/documentation/postman-collection/index.md) or the Insomnia tool to test the sample request data.

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* [Merchant Details Test Cases](https://developer.mastercard.com/consumer-clarity/documentation/testing/test-cases-merchant-details/index.md) shows the merchant detail responses you can expect to receive from some example requests sent to the Consumer Clarity API.
* [Digital Receipt Test Cases](https://developer.mastercard.com/consumer-clarity/documentation/testing/test-cases-digital-receipts/index.md) shows the digital receipt responses you can expect to receive from some example requests sent to the Consumer Clarity API.
* [Carbon Footprint Test Cases](https://developer.mastercard.com/consumer-clarity/documentation/testing/test-cases-carbon-footprint/index.md) shows responses that include carbon footprint data that you can expect to receive from some example requests sent to the Consumer Clarity API. Note that you must sign up for the service to receive this response data.
* [Smart Subscriptions Test Cases](https://developer.mastercard.com/consumer-clarity/documentation/testing/test-cases-subscription-controls/index.md) shows responses that include subscription data that you can expect to receive from some example requests sent to the Consumer Clarity and Smart Subscriptions APIs. Note that you must sign up for the Smart Subscriptions service to receive this response data.
* [Call Center Test Cases](https://developer.mastercard.com/consumer-clarity/documentation/testing/test-cases-call-center/index.md) shows the digital receipt responses you can expect to receive from some example requests sent to the Consumer Clarity API.
* [First-Party Trust Test Cases](https://developer.mastercard.com/consumer-clarity/documentation/testing/test-cases-first-party-trust/index.md): shows responses that include compelling evidence that you can expect to receive from some example requests sent to the Consumer Clarity API. Note that you must sign up for the service to receive this response data.
* [Postman Collection](https://developer.mastercard.com/consumer-clarity/documentation/postman-collection/index.md) provides guidance for how to fork our Postman collection and explore the API.
* [Run Test Cases](https://developer.mastercard.com/consumer-clarity/documentation/testing/run-test-cases/index.md) provides details about how you can use Postman (or another testing tool) to test and verify the requests and responses.