What problem does it solve? Working with Feishu (Lark) cloud documents programmatically requires handling authentication, block-level document structure, XML/Markdown formatting rules, and embedded resources like whiteboards, sheets, and media. This Skill provides a complete operational guide for creating, fetching, updating, and enriching Feishu documents through lark-cli commands without manually learning the API surface. ## Core Features & Use Cases - Document CRUD via Shortcuts: Create documents from XML or Markdown, fetch content with scoped reads (outline, section, range, keyword), and apply precise updates (str_replace, block_insert_after, block_replace, block_delete, block_move_after). - Rich Block Authoring: Compose documents with callouts, grids, tables, checkboxes, code blocks, LaTeX, buttons, and embedded whiteboards following a built-in style guide with richness checks. - Media & Whiteboard Handling: Insert images from clipboard or file, preview and download document media, and orchestrate Mermaid/SVG whiteboard diagrams through SubAgents. - Use Case: Given a Feishu document URL, fetch only the relevant section by keyword, rewrite it with structured blocks, insert an architecture diagram as an SVG whiteboard, and append a summary callout. ## Quick Start Ask the AI to read the Feishu document at a given URL and summarize its content, or to create a new Feishu document from an outline you provide.