One sector's drill-down: every member of the sector scored and ranked by opportunity, plus the sector's own ETF row. Accepts a sector name (e.g. 'Energy', 'Information Technology') or its ETF symbol (e.g. XLE, XLK). Unknown values return the sector directory. Free tier: one market day delayed. Live sibling (x402, pay-per-call): get_sector_read_live.
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