# Release History
source: https://developer.mastercard.com/eligibility-api/documentation/release-history/index.md

## Release History {#release-history}

| **Open API Spec Version** | **Release Date**  |                               **Notes**                               |
|---------------------------|-------------------|-----------------------------------------------------------------------|
| 1.0.0                     | December 12, 2022 | Eligibility APIs to support benefits and product searches             |
| 2.0.0                     | June 20 ,2024     | Access Token API to support benefits widget integration into websites |
| 3.0.0                     | January 14 ,2025  | Card Identifier Generation API and Enhanced Eligibility APIs          |
| 3.0.1                     | March 11 ,2025    | LUHN Check Enablement                                                 |
| 4.0.0                     | November 7 ,2025  | Enable Customization to widget                                        |