The patients API is used for uploading Patient Demographics to Particle. Patients can be created, retrieved, updated, deleted, and listed. This API must be used prior to posting documents (add link to documents section here) for a patient.
Care should be taken to ensure the patient_id field is unique to each set of demographics and always is linked to the same set of demographics being submitted. Using the same patient_id with different sets of demographics will result in errors being thrown.