The user wants to build a custom app using Heidi's API for Frappe integration. Key features requested: 1) Chat feature for clinicians to discuss cases, 2) Ability to send patient documents (text, images, lab results, referral letters) to Heidi via API, 3) Clinical insights, summaries, and medical reports generated from the patient data to assist clinicians in diagnosis and for referring to other organizations, 4) Medical report generation capability. The API would send patient data to Heidi and receive inference/insights back to the clinician.