What problem does it solve? It lets an AI agent perform real, verifiable edits on Feishu/Lark online spreadsheets—reading data, writing typed values and formulas, styling, charts, pivot tables, filters, and conditional formatting—without corrupting existing content or delivering unverified results. ## Core Features & Use Cases - Full spreadsheet operations: read/write cells, values, formulas, styles, comments, and images; search and replace; insert/resize rows and columns; sort, filter, and clear ranges. - Native objects: create charts, pivot tables, conditional formats, filter views, sparklines, and floating images as real interactive objects instead of static screenshots. - Safety and verification workflow: minimal-change editing rules, high-risk write approval via --dry-run/--yes, read-back validation, formula diagnostics, and changeset review of AI edits. - Use Case: Ask the agent to append a summary row with formulas to an existing Feishu sheet, inherit the original styling, add a bar chart, then read back the results to confirm everything landed correctly. ## Quick Start Ask the agent to read the Feishu spreadsheet at a given /sheets/ URL and summarize its sheets and data using lark-cli sheets commands.