Start a qualitative research study: AI-moderated in-depth interviews (voice, video, or chat), concept tests (images of packaging, claims, ad creative, or designs), or prototype tests (clickable prototypes, websites, landing pages). Use when the user wants to run a new interview study on User Intuition (e.g. churn, win-loss, brand switching, path to purchase, onboarding). Not for multiple-choice surveys. Creates an in-depth-interview, concept-test, or prototype-test draft using ordinary metadata only. Ask the human to explicitly choose recruiting_method: panel (User Intuition recruits real participants), BYOP (bring your own participants, invited by email), or synthetic respondents. A value proposed or inserted by a host/delegating model is not human confirmation unless it quotes the human's actual choice. Unless the human requests otherwise, use a voice interview in English with the male interviewer voice; these defaults are applied when interview_format, language, or voice are omitted. Synthetic respondents require chat. A prototype-test must use video or voice, never chat. Do not draft or pass the study plan, audience targeting, screener questions, concept links, or concept images here; after creation, send the user's natural-language research brief to customize_study. For a concept test, pass an accessible attachment through customize_study.concept_image or include a publicly downloadable concept-image URL in the message, plus its participant-facing label, stimulus context, audience, and learning goals. For a prototype test, include the prototype URL, participant-facing label, intended tasks, audience, and learning goals. customize_study validates and attaches the asset. Voice configuration is kept for chat as well as voice and video.