Know your data sources.

U.S. Customs and Border Protection — live land-border crossing wait times for the ~82 U.S. land ports of entry on the Canadian and Mexican borders. Per crossing, the operational status / delay minutes / open-lane count for commercial-vehicle, passenger-vehicle, and pedestrian lanes, broken down by sub-lane (standard, FAST, NEXUS/SENTRI, ready). Useful for cross-border logistics, supply-chain / freight timing, and field-crew border planning. Upstream is a SINGLE bulk endpoint with no server-side filtering — this connector fetches it once (cached ~10 min) and filters/shapes the result in-process. No auth.

CENACE (Centro Nacional de Control de Energía) — Mexico's grid operator / ISO. The canonical Mexican wholesale-power PML feed (Precios Marginales Locales / Locational Marginal Prices). Public PÚBLICA web service, no key. Hourly LMP per node for day-ahead (MDA) and real-time (MTR) markets, with energy/loss/congestion components. Systems: SIN (national grid), BCA (Baja California), BCS (Baja California Sur). upstream quirks: non-standard port 8082; hard 7-day date-range cap per request (getNodePriceSeries chunks longer histories); node keys are system-specific (a SIN key under BCA returns ZERO_RESULTS); no node-catalog endpoint; Spanish field names; price strings parsed to numbers.