a-share-datalisted

# A-share Data Skill Use this skill when the user asks for A 股数据, Chinese stock quotes, K-line/history, 东方财富 F10 financials, public announcements, news evidence, valuation inputs, or a data pack for later investment analysis. This skill is **data acquisition only**. It does not issue investment advice by itself. It prepares timestamped, provenance-rich data that other research or portfolio workflows can analyze. ## Core Policy 1. **Real data only.** Never fabricate prices, financials, valuation ratios, charts, holdings, or news. If an endpoint fails or a field is absent, record it as unavailable. 2. **Record provenance.** Keep URL/vendor, fetch timestamp, stock code, market, adjustment mode, date range, and any errors for every source. 3. **Treat vendor fields cautiously.** Public quote fields can be undocumented or change over time. Preserve raw fields when useful and label derived calculations clearly. 4. **Do not blindly quote PE fields as static PE.** For A-shares, vendor PE fields may be TTM, dynamic, negative because of loss-making bases, or otherwise vendor-specific. If prior-year attributable net profit and total market cap are both available, compute a rough static PE yourself as `market_cap / prior_year_parent_net_profit` and label it as an estimate. 5. **Distinguish intraday from close.** Mark intraday quotes with the vendor timestamp. Do not present an intraday quote as a closing price. 6. **Respect data gaps.** A missing or blocked source is a fact to report,