Update to Nuira

{
  "description": "Explain where an ecommerce brand's margin goes, line by line from net revenue to contribution after ad spend, with Nuira. Use when the user asks about margin, profit, COGS, gross profit, what is left after costs, or why profit fell while revenue did not.",
  "included_files": [],
  "name": "explain-margin",
  "skill_md_contents": "---\nname: explain-margin\ndescription: Explain where an ecommerce brand's margin goes, line by line from net revenue to contribution after ad spend, with Nuira. Use when the user asks about margin, profit, COGS, gross profit, what is left after costs, or why profit fell while revenue did not.\n---\n\nUse this skill for any question about margin structure. With no `from` and `to`, a tool reads the brand's default dashboard period, which is not necessarily a week — every result states its span in `period`, so read it back rather than assuming. When the user names a period (\"this month\", \"September\"), pass it as `from` and `to` (YYYY-MM-DD, inclusive, never after today).\n\n1. Call `get_knowledge_coverage`. `margins` is the share of revenue whose orders carry a known product cost. If it is below 1, say what share is covered BEFORE drawing any conclusion: the uncovered part has no cost, so its margin is unknown, not 100%.\n2. Call `get_contribution_breakdown` for the period. Walk from net revenue to cost of goods sold, gross profit, ad spend and contribution, quoting each line and its share of revenue.\n3. Call `get_margin_trend` to say whether this period's margin is normal against its own monthly history.\n4. If the user asks which products drive it, call `get_top_products` for the period and use its `cost`, `grossProfit` and `margin` fields as returned.\n\nRules:\n- Quote every figure exactly as a tool returned it, with its period and currency. Never subtract or divide to produce a figure a tool already returns.\n- A null cost, gross profit or margin means the cost is missing, never zero. Do not fill it in.\n- If the user compares to industry norms, `get_vertical_benchmarks` returns reference ranges for the category — never present them as the brand's own figures.\n"
}