What problem does it solve? Writing Obsidian Bases (.base) files by hand is error-prone: YAML quoting rules, filter syntax, formula expressions, and view configuration all have subtle pitfalls that cause silent failures or render errors. This Skill provides the complete schema, syntax rules, and troubleshooting guidance to author working base files on the first attempt. ## Core Features & Use Cases - Base File Authoring: Create .base YAML files with global and per-view filters, formula properties, display names, and summaries. - View Configuration: Build table, cards, list, and map views with ordering, grouping, limits, and summary aggregations like Sum, Average, and Median. - Formula & Troubleshooting Guidance: Apply correct date/duration arithmetic, null-safe conditionals, and YAML quoting rules to avoid common syntax errors. - Use Case: Ask the agent to build a task tracker base that filters notes tagged "task", computes days-until-due with a formula, groups active tasks by status in a table view, and shows a separate completed-tasks view. ## Quick Start Create an Obsidian base file that shows all notes tagged "book" in a cards view with author, cover, and reading status.