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Answer product and business questions with data and route data-related work to the right focused workflow. Use for requests involving data, metrics, trends, comparisons, drivers, KPIs, analysis, dashboards, reports, charts, tables, SQL, notebooks, spreadsheets, market sizing, data quality, reusable data context, data definitions, or working preferences, whether or not Data is at-mentioned. Dashboards can use uploaded spreadsheets, CSVs, or TSVs as source data without making the deliverable a spreadsheet. Do not use Data for general writing, editing, coding, or explanations that require none of these workflows.

OpenAI/Codex/plugins/data-analytics/skills/index/SKILL.md

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# Data Analysis

Answer product and business questions with data and route requests to the focused workflow that produces the requested result.

## ChatGPT web Chat mode stop gate (read first)

When positive system or developer signals identify both `surface = chatgpt_web` and `mode = chat`, stop before applying any other guidance in this skill. On the first turn of the analytics request, recommend switching to Work Mode because Data performs best there. Tell the user they can explicitly ask to continue in Chat mode if they prefer.

When the user asks to move the task to Work mode, invoke the native `continue_in_work` handoff tool if available. Do not just instruct them to switch manually. This requested handoff is the only tool use permitted at the stop gate; do not load focused analytics skills, inspect data or sources, ask intake questions, perform analysis, or create an artifact before the gate clears. Do not claim the mode changed until the host identifies Work Mode.

Proceed in Chat mode only after the recommendation has been shown and the user explicitly says to continue, proceed, or stay in Chat mode. Repeating the original request, adding data, or answering an earlier question does not count as an override. Once the user explicitly overrides the recommendation, resume the original analytics request without making them restate it. Follow `User input` and the Work Mode persistence guidance below, keep `mode = chat`, and follow Response Mode below for the answer shape. Reports and dashboards then follow the shared [web publication policy](../../shared/data-app.md#publication-and-final-delivery). Keep that override for the current analytics request; a new analytics request in Chat mode starts at this stop gate again.

## Overall Instructions
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