| ApiCheckUserActionRow | One action row of curequest=actions (deprecated alias edits). |
| ApiCheckUserIpRow | One IP row of curequest=userips: an IP the target user edited from. |
| ApiCheckUserIpUserRow | One user row of curequest=ipusers: an account that edited from the target IP. |
| ApiCheckUserLogEntry | One entry of list=checkuserlog. |
| ApiQueryCheckUserFormattedBlockInfoResult | The checkuserformattedblockinfo object: the sitewide-block status of the requesting user, for clients that need to explain API failures caused by their own block. |
| ApiQueryCheckUserLogResult | The checkuserlog object of a list=checkuserlog response. |
| ApiQueryCheckUserResult | The checkuser object: shaped by curequest, one key per request mode. |