Latest observed weather signal for one city — a single-signal SPOT snapshot (like a market-data quote). Flat $0.01, paya

Latest observed weather signal for one city — a single-signal SPOT snapshot (like a market-data quote). Flat $0.01, payable by a STOCK x402 client (no binding nonce). Never returns history or more than one signal. Uncharged on unknown-city / no-data-yet.