# Why does the documentation URL for v3 Marketplace REST APIs include v4?

**URL:** <https://community.developer.atlassian.com/t/why-does-the-documentation-url-for-v3-marketplace-rest-apis-include-v4/100256>\
**Category:** General Discussion\
**Created:** [April 16, 2026, 6:59am UTC](https://community.developer.atlassian.com/t/why-does-the-documentation-url-for-v3-marketplace-rest-apis-include-v4/100256 "2026-04-16T06:59:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tbinna](https://sea1.discourse-cdn.com/atlassiandeveloper/user_avatar/community.developer.atlassian.com/tbinna/32/35870_2.png) [@tbinna](https://community.developer.atlassian.com/u/tbinna)\
**Post date:** [April 16, 2026, 6:59am UTC](https://community.developer.atlassian.com/t/why-does-the-documentation-url-for-v3-marketplace-rest-apis-include-v4/100256/1 "2026-04-16T06:59:03Z")

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Why does the documentation URL for v3 Marketplace REST APIs include v4?

`https://developer.atlassian.com/platform/marketplace/rest/v4/intro/`

If I go to [https://developer.atlassian.com/platform/marketplace/rest/v3](https://developer.atlassian.com/platform/marketplace/rest/v3) then I get redirected to the Product Tags REST API.

Not sure what the logic is. Does not affect my work, but it’s confusing.

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**Author:** ![nathanwaters](https://sea1.discourse-cdn.com/atlassiandeveloper/user_avatar/community.developer.atlassian.com/nathanwaters/32/38195_2.png) [@nathanwaters](https://community.developer.atlassian.com/u/nathanwaters)\
**Post date:** [April 16, 2026, 7:23am UTC](https://community.developer.atlassian.com/t/why-does-the-documentation-url-for-v3-marketplace-rest-apis-include-v4/100256/2 "2026-04-16T07:23:38Z")

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You may remember them from such films as:

- [UI Kit previously known as UI Kit 2, not to be confused with the original UI Kit which was renamed to UI Kit 1](https://community.developer.atlassian.com/t/forge-ui-kit-is-now-generally-available/79251)
- [Fetch a Confluence attachment with the v2 API, not the deprecated v1 API, but if you want to create an attachment you will need to use the v1 API, that isn’t deprecated](https://developer.atlassian.com/cloud/confluence/rest/v1/api-group-content---attachments/#api-group-content---attachments)
- [Products are now named apps, but not to be confused with marketplace apps, no we’re referring to Confluence and Jira as apps](https://community.developer.atlassian.com/t/changing-our-terminology-from-products-to-atlassian-apps/94536)