OptionalartistOptional artist name for the upload (track[artist]). Returned as metadata_artist.
Optionalartwork_Artwork image (track[artwork_data]). PRO users.
Audio file bytes. File/Blob in browsers; Blob/Uint8Array in Node 20+.
OptionalcommentableOptionaldescriptionOptionaldownloadableOptionalembeddable_OptionalfilenameOptional filename when asset_data is not a File
OptionalgenreOptionalisrcOptionallabel_OptionallicenseOptionalpermalinkOptionalpurchase_OptionalreleaseOptionalrelease_Write-only release date yyyy-mm-dd
OptionalsharingOptionalstreamableOptionaltag_Track title (required)
Parameters for uploadTrack (
POST /tracksmultipart). Field names follow the officialtrack[…]form schema.