Free Energy Historical Data API

Energy symbols and coverage

The energy group contains 27 datasets for three symbols:

Energy datasets support M1, M5, M15, M30, H1, H4, D1, W1 and MN1. WTI and Brent histories start earlier than natural gas in this catalog; check the dataset coverage before building a multi-year study.

Energy OHLC request

Request energy bars with the same OHLC endpoint. The example below pulls USOIL H1. These are broker CFD prices, so contract rollover and session gaps can appear in the history.

Energy data quality

Energy datasets are checked for duplicates, OHLC violations, invalid prices, flat bars, gaps, extreme returns, volume and spread anomalies. Use the quality report to identify rollover dates and thin-liquidity periods before training a model.

Energy API use cases

Energy API limits

The free tier is limited to 60 requests per minute, 1,000 requests per day, 50,000 rows and 366 days per request. Split long M1 histories into yearly windows.

Request examples

curl "https://www.algospecial.com/api/ohlc.php?symbol=USOIL&tf=H1&from=2026-01-01&to=2026-03-31&format=json"

import pandas as pd
import requests

params = {
    "symbol": "UKOIL",
    "tf": "D1",
    "from": "2024-01-01",
    "to": "2025-12-31",
}
r = requests.get("https://www.algospecial.com/api/ohlc.php", params=params, timeout=30)
r.raise_for_status()
df = pd.DataFrame(r.json()["data"])
df["Timestamp"] = pd.to_datetime(df["Timestamp"])
print(df.tail())

All timestamps are broker server time. Some legacy forex exports return 0 for TickVolume and Spread because those fields were not present in the source feed.

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