What problem does it solve? Business documents often contain numbers, figures, and quotations whose origins are lost or unverifiable, making it impossible for readers to confirm values or reproduce them later. This Skill fixes the provenance of every data point before writing begins, so the same value can always be reached again. ## Core Features & Use Cases - Source Recording Standard: Defines a four-field citation format (location, position, timestamp, retrieval method) placed in a ## 出典 section at the end of the document. - Value Classification: Requires every number to be labeled as actual (実績), forecast (見込み), or estimate (概算), with testable assumptions written for non-actual values. - Clear Scope Boundaries: Delegates data retrieval to other skills (google-drive, document-systems, data-analyst) and fact-checking to quality-gates, keeping this Skill focused only on how sources are recorded. - Use Case: When drafting a quarterly business proposal with metrics from ad dashboards, spreadsheets, and SQL queries, use this Skill to record each value's URL, cell range or query, retrieval timestamp, and method so reviewers can verify every figure. ## Quick Start Use the document-sources skill to identify every number and figure needed for my proposal document and record their sources with location, position, timestamp, and retrieval method.
