by voitta-ai
Pull trustworthy numbers out of a dashboard that renders entirely client-side, by decoding the data blob it ships instead of scraping the DOM or driving a browser. Use when: (1) you want a dashboard's data as a feed for a report, a script, or another skill, (2) `curl` returns a big HTML page whose numbers are nowhere in the HTML, (3) you are about to reach for Playwright / headless Chrome just to read some totals, (4) you copied a rank or a percentage off the screen and want to know what it actually measures before quoting it, (5) numbers you derived from a decoded blob disagree with what the page displays. Covers finding the blob, decoding a positional-tuple event schema from the page's own render loop, porting derived-metric formulas rather than guessing them, and validating against a screenshot. Includes two traps that silently produce plausible-but-wrong numbers: a displayed rank that is really a row number under the active sort, and a "velocity"/delta that is intra-window rather than period-over-period.
Claude Code