Hato (鳩 lit. Pigeon) is basically the same idea of ARM (AnimeID Relational Mapper), but works for Anime and Manga. Hato is considered the first step in developing the list sync feature in Shukofukurou and allow for muti-service scrobbles in Hachidori. Hato is basically a JSON REST API that allows easy lookup of title identifiers on different Anime/Manga discovery sites such as AniList, Kitsu and MyAnimeList.
What is different from ARM is that Hato supports Anime and Manga. Also, once Hato fetches the title IDs, it stores them in a database, where it can be retrieved quickly, reducing overhead. Hato is written in C# and runs on the ASP.NET Core platform.
You can read more about Hato and test it out here. In the future once it leaves beta, usage will require an API key, which will require one to become an active Patron. Since this web service requires a VPS to host on, becoming a Patron allows me to keep hosting the web service and of course, you can use it in your own apps as well without having to host it.
Hato is open source and deployable on computers running Windows and Linux.