Issue with Roblox Multiget/Thumbnails API – Missing Data for Specific Games

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Dear Roblox Team,

I’m a full-stack developer specializing in creating Roblox-related websites for large studios. Recently, several of my clients have reported issues with their websites not functioning correctly.

After debugging, I discovered that the issue is related to the Roblox Multiget/Thumbnails APIs. Specifically, these APIs are returning an “Unknown error” and no thumbnail data for certain games.

Attached are screenshots demonstrating the problem with two well-known games:

  1. Grow a Garden
  2. Baddies

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image857×317 5.15 KB

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image398×265 2.73 KB

I would appreciate any assistance or clarification you can provide regarding this issue.

A private message is associated with this bug report

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Hey there, which endpoint is this about, can you share the URL? (or a CURL example reproducing the error ideally – please mask any sensitive values) This will help us triage the issue internally. Thanks!

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Hi Hooksmith,

Thanks for the quick response—much appreciated!

The issue concerns the /v1/games/multiget/thumbnails endpoint. Below are the URLs for the two games’ thumbnail API calls:

Grow a Garden:

https://thumbnails.roblox.com/v1/games/multiget/thumbnails?universeIds=7436755782&countPerUniverse=1&defaults=true&size=768x432&format=Webp&isCircular=false

Baddies:

https://thumbnails.roblox.com/v1/games/multiget/thumbnails?universeIds=3990106548&countPerUniverse=1&defaults=true&size=768x432&format=Webp&isCircular=false
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Working for me:

IMG_7967
IMG_79671125×545 141 KB

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The Grow a Garden one is the example I provided that is working.

Please try the Baddies one, which isn’t working.

https://thumbnails.roblox.com/v1/games/multiget/thumbnails?universeIds=3990106548&countPerUniverse=1&defaults=true&size=768x432&format=Webp&isCircular=false
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