Background Mentoring's success in enhancing a mentee's professional and personal development, and a host organisations' reputation has been called into question, amidst a lack of effective tools to evaluate mentoring relationships and guide oversight of mentoring programs. A scoping review is proposed to map available literature on mentoring assessment tools in Internal Medicine to guide design of new tools. Objective The review aims to explore how novice mentoring is assessed in Internal Medicine, including the domains assessed, and the strengths and limitations of the assessment methods. Methods Guided by Levac et al.'s framework for scoping reviews, 12 reviewers conducted independent literature reviews of assessment tools in novice mentoring in PubMed, Embase, Scopus, ERIC, Cochrane, GreyLit, Web of Science, Open Dissertations and British Education Index databases. A 'split approach' saw research members adopting either Braun and Clarke's approach to thematic analysis or directed content analysis to independently evaluate the data and improve validity and objectivity of the findings.