There are several pirate repos that re-host Akemi’s packages. Do not use them. They often inject malware or outdated versions.
If you still have issues even with the correct repo: cydia.akemi.ai not working
The repository cydia.akemi.ai (often associated with developer Karen/Akemi) is a well-known source for useful jailbreak tweaks such as AppSync Unified, PhotoManager, and uasharedtools. However, users frequently report issues when trying to add or refresh this repo. There are several pirate repos that re-host Akemi’s
If you are encountering errors (e.g., "Did not Find Repository", "Size Mismatch", or "Failed to Fetch"), this guide will explain why and how to fix it. If you still have issues even with the correct repo:
Let’s face it: You only use cydia.akemi.ai for AppSync Unified. You don't actually need the repo if you only want that one tweak.