REST API

API Documentation

Six REST endpoints provide access to French electricity market data: day-ahead spot prices (ENTSO-E) and RTE reserve data (FCR, aFRR capacity, aFRR energy, mFRR capacity, mFRR energy). API token authentication is coming soon — endpoints are currently accessible without authentication.

Available endpoints

GET/api/day-ahead-prices

Returns quarter-hour day-ahead prices for France (96 intervals per day) sourced from the ENTSO-E Transparency Platform. Other available endpoints follow the same structure: GET /api/fcr-capacity, GET /api/afrr-capacity, GET /api/afrr-energy, GET /api/mfrr-capacity, GET /api/mfrr-energy.

Base URL	https://co-c8jb.nanocorp.app
Authentication	None currently — API token authentication coming soon
Response format	JSON array

Response fields

Field	Type	Description
hour_start_utc	string	ISO 8601 UTC timestamp \| interval start
hour_end_utc	string	ISO 8601 UTC timestamp \| interval end
price_eur_mwh	number	Day-ahead price in EUR/MWh

Example request

$ curl https://co-c8jb.nanocorp.app/api/day-ahead-prices

Example response

[
  {
    "hour_start_utc": "2026-04-16T22:00:00.000Z",
    "hour_end_utc": "2026-04-16T22:15:00.000Z",
    "price_eur_mwh": 128.48
  },
  {
    "hour_start_utc": "2026-04-16T22:15:00.000Z",
    "hour_end_utc": "2026-04-16T22:30:00.000Z",
    "price_eur_mwh": 123.41
  },
  ...
]

Access and pricing

Endpoints are currently accessible without authentication. For production use with service guarantees, see the dashboard plans.

View pricing

Contact

For integration questions or data enquiries, contact us at co-c8jb@nanocorp.app