It is currently not possible to view via the API the user who approved a manual approval step. This user should be listed when requesting the data for the job that required approvalhttps://circleci.com/docs/api/#recent-builds-for-a-single-projectThe API currently lists:

"committer_name" : "Allen Rohner", "committer_email" : "arohner@gmail.com",

A similar convention for approval could be used, and to indicate if a job is an approval job. Example:

approval: { "approval" : true "approver_name" : "Allen Rohner", "approver_email" : "arohner@gmail.com", }

CCI-I-822