# Grid402

> Real-time and historical US wholesale electricity prices for AI agents. ERCOT live today; schema is multi-ISO ready. UTC, interval-ending timestamps throughout.

Payment: x402 batch-settlement (USDC on base-sepolia). Prices: current $0.002/call, window $0.005/call, history $0.01/call.

## Endpoints
- GET /v1/prices/current?iso=ERCOT&location=LZ_HOUSTON -- latest RTM + DAM price.
- GET /v1/prices/window?iso=ERCOT&location=LZ_HOUSTON&hours=6 -- interval series (<= 48h).
- GET /v1/prices/history?iso=ERCOT&location=LZ_HOUSTON&start=YYYY-MM-DD&end=YYYY-MM-DD -- hourly aggregates (<= 31d).
- GET /v1/demo/current?iso=ERCOT&location=LZ_HOUSTON -- same as current, delayed >= 60 min, free.
- GET /health, /status -- liveness + data freshness.
- GET /openapi.json -- full schema, including valid locations/markets/products.

Disclaimer: Informational only; not for settlement purposes.