Impressive while browsing top major artists¹. Much less so when I tried to check out some lesser known ones². At this point I’d say their database is largely empty.
²⁾ One of my first searches and already a duplicate entity ;D
https://jaxsta.com/profile/3bb2febf-572d-4064-8c53-c2fb4c8ae6a0/catalogue
https://jaxsta.com/profile/aa781ea7-35a8-4f11-96fe-e061341efb20/catalogue
Compare how much more we (or discogs, or rym) got on him: https://musicbrainz.org/artist/a64a323b-4df9-48b5-a277-4cfc3f30a34f
¹⁾ On the other hand, for things existing in their db, the crediting info is invaluable. For example, a fairly popular and well-received 2019 album by Julia Jacklin:
https://jaxsta.com/release/bd3aad5a-97db-4db6-b4ba-d5d4cdf48e13/834a421f-eab9-498c-8e41-e38e142c1511/overview
vs
https://musicbrainz.org/release-group/09a69267-c46e-4d68-8381-27517bf3288a
Hopefully their API will be part of the public release and not behind the pro paywall.
PS
I mostly stayed away from all the discussions about ‘digital releases’ treatment in MB database, but one skim through Jaxsta shows what kind of a disambiguation hell it can be:
https://jaxsta.com/release/b068e673-475f-43b1-b853-3d3fc76b5d0b/8e8e6c27-6db1-40b5-bab5-81373a218014/variants
vs the number of editions on MB:
https://musicbrainz.org/release-group/69eb9696-35c8-4463-aff5-952526213ce8