OilPriceAPI vs API Ninjas commodity API: choose by data contract, not headline price
By OilPriceAPI · Product pages checked November 1, 2026
A commodity API is useful only when its quote means what your app assumes it means. API Ninjas covers many commodity futures through a general-purpose API platform. OilPriceAPI focuses on oil, gas and related energy series. Both can answer a request for a WTI number, but their free-tier permissions, price timestamps and futures products need different handling. This guide uses each provider's published terms and documentation as checked on November 1, 2026.
Start with the licence and the quote type
API Ninjas says its Free plan is for personal, non-commercial, development, testing or evaluation use. Its commodity-price endpoint returns the last completed daily settlement on Free; premium members receive live futures prices. Its separate oil and energy spot endpoint is premium-only and describes assessed daily physical-hub prices that may trail by several days. Read its current terms and commodity endpoint reference before putting a quote in a commercial workflow.
OilPriceAPI's latest-price endpoint returns source-dated observations. Refresh cadence and dataset access vary by source, market hours, plan and account entitlement. Do not label any response “live” merely because your request succeeded: inspect its source date and status. API access also does not grant redistribution rights in a publisher's underlying data. The commodity data API guide is the product entry point; the latest-prices reference defines the request and response.
Compare the workflow you are actually building
| Need | API Ninjas | OilPriceAPI |
|---|---|---|
| Free evaluation | Last completed daily futures settlement; non-commercial licence. | Source-dated energy observations; plan and source access vary. See the trial and ongoing Free terms below. |
| Futures curve | Dedicated forward-curve endpoint on Business or an annual plan, per its endpoint reference. | Use the separate futures endpoint family and confirm contract, exchange and plan availability first. |
| An energy dashboard | Check whether a rolling futures contract or an assessed spot series is the value your users expect. | Check the commodity code, source timestamp and freshness before showing the latest observation. |
If the answer must be a particular exchange contract, compare contract identifiers and entitlements before prices. If it must be a physical-hub assessment, compare the observation date and permitted use. A ticker name alone cannot establish that two providers serve interchangeable series.
Write down the series specification before selecting an API: unit, currency, location, contract month or assessment window, update schedule and allowed display rights. Then ask each provider for a documented example of that exact series. For a chart, also check the historical endpoint and how it represents missing dates. For an alert, check whether the observation timestamp changes when the underlying market is closed. These checks prevent a chart from silently mixing settlement, assessed spot and intraday futures data under a single label.
What does 100,000 calls cost?
API Ninjas' pricing page listed 100,000 calls per month on Developer when checked on November 1, 2026. It displayed $59 per month, with $39 per month when billed yearly. If you consume all 100,000 calls, those are also the effective prices per 100,000 calls; using fewer calls raises the effective cost per used call. Check the billing toggle and current page before purchasing. OilPriceAPI quotas and prices differ by plan and can change, so use its current pricing page for a same-volume comparison. More calls do not cure a mismatch between the data contract and your use case.
Make one source-dated WTI request
Set OILPRICEAPI_KEY in your shell or secret manager, then call the authenticated endpoint. Keep the key in a header, not a URL or committed source file. The code below prints the returned price and source date; it does not substitute a sample number for a failed response.
curl "https://api.oilpriceapi.com/v1/prices/latest?by_code=WTI_USD" \
-H "Authorization: Token $OILPRICEAPI_KEY"import json
import os
from urllib.request import Request, urlopen
key = os.environ["OILPRICEAPI_KEY"]
request = Request(
"https://api.oilpriceapi.com/v1/prices/latest?by_code=WTI_USD",
headers={"Authorization": f"Token {key}"},
)
with urlopen(request, timeout=10) as response:
payload = json.load(response)
if payload.get("status") != "success" or not isinstance(payload.get("data"), dict):
raise RuntimeError("No usable WTI observation returned")
quote = payload["data"]
if quote.get("price") is None or not quote.get("as_of"):
raise RuntimeError("WTI observation has no price or source date")
print(quote["code"], quote["price"], quote["as_of"])
This example was checked against the live WTI endpoint on November 1, 2026: it returned HTTP 200, a WTI code, a price and an as_of source timestamp. If you need several codes, inspect each observation independently; a successful batch response does not make an older member current. See the API reference for authentication and quota details.
A short acceptance test before you migrate
Pick one code and one day when your source publishes a new observation. Save the response body, the request time and the source time. Repeat while that source is closed. This shows whether your display is showing a new assessment, the same assessment collected again, or a rolling contract with a new delivery month. Include a missing or delayed response in the test: the app should say when data is unavailable instead of continuing to show yesterday's number as if it were current.
Then check the contract around that response. Which commodity codes and date ranges does your plan allow? Is the use internal, customer-facing or redistributed? Does the source permit that display? What happens at the request limit, and can a user see a source timestamp or a recovery action? A cheap request can become an expensive integration if a licence or observation mismatch is found after launch. Keep the raw response in a test fixture so a provider switch can be reviewed against the same acceptance criteria, rather than a screenshot of two prices taken at different times.
OilPriceAPI trial and Free plan
Free plan: 50 requests/day, with no expiry. New accounts start with a 7-day trial: 10,000 requests, full API (except licensed datasets: aviation fuel pilot), no card. After the trial, you automatically continue on the Free plan. The Free plan is hard-capped and never billed.
Confirm the endpoint, source, update cadence and rights your application needs before choosing a plan. Start with the commodity API catalog or follow the first-request guide.
Provider features, licences and prices were checked November 1, 2026 against official documentation. Recheck them before adopting a provider; this article is a point-in-time comparison.