Build FX, economics and calendar features with a documented API. Narwhal returns structured data through REST and hosted MCP, with one account and shared quota. Yahoo Finance provides a consumer finance website, while the independent yfinance library offers Python access.
Choose Narwhal to put FX history, country indicators and calendar data into your application with standard HTTP requests and a free allowance that permits commercial apps.
The FX example compares Narwhal REST with the independent yfinance Python library.
| Requirement | Narwhal API | Yahoo Finance |
|---|---|---|
| Free tier | ✓ 3,000 requests/month | Not published as an API |
| Cheapest paid plan | Basic: $60/month; $600/year available | Not published |
| Update speed | Dataset schedule; timestamps retained | Not published |
| History | Free: 12 months; Basic: 5 years; available records only | Not published as an API |
| Coverage | Economics, FX, holidays and published commodities | Consumer finance website |
| Interfaces | REST and MCP; WebSocket not published | Public data API not published |
| SDKs | Not published | Independent yfinance library |
| Commercial use on free tier | ✓ Commercial apps; resale needs Enterprise | ✗ Automated collection needs permission |
Yahoo does not publish a public market-data API plan.
| Requests per month | Narwhal API | Yahoo Finance |
|---|---|---|
| 1,000 | Free: $0/month | Not published |
| 10,000 | Basic: $60/month | Not published |
| 100,000 | Basic: $60/month | Not published |
Read September 2026 euro to dollar history
import yfinance as yf
# Change: library call to REST
print(yf.Ticker("EURUSD=X").history(
start="2026-09-01",
end="2026-10-01",
))# Change: URL and key
url="https://api.narwhalapi.com"
url="$url/v1/fx/rates/EUR/observations"
curl --get \
"$url" \
--data-urlencode "currencies=USD" \
--data-urlencode "start_date=2026-09-01" \
--data-urlencode "end_date=2026-09-30" \
--data-urlencode "limit=100" \
-H "Authorization: Bearer YOUR_API_KEY"Narwhal Free includes 3,000 successful requests each month and permits commercial apps. Use that allowance for a dashboard, scheduled data fetches or an agent integration. Move to Basic for 100,000 monthly requests as usage grows, with the same account and authentication.
REST and hosted MCP reach the same data through one account. Your application can fetch JSON while an agent uses the hosted tools, with every successful call counted once against the shared allowance. One quota makes the combined workload straightforward to budget.
Narwhal's economics catalogue spans 36 countries, with a coverage table for each indicator. Country and indicator paths organize requests around the data your application uses. Combine observations with FX, public holidays and release dates to build country dashboards through the same account.
Yahoo Finance is the better pick for browsing financial information on a ready-made consumer website. You can consult its pages without building a data interface or maintaining a backend. The independent yfinance library suits the research and educational workflows described by its project; its code licence does not grant rights to Yahoo's data. Yahoo's terms require permission for automated collection.
Yes. Narwhal Free includes 3,000 successful requests per month, commercial app use and both REST and hosted MCP access. Use Narwhal for FX history, country indicators and calendars from a documented API.
Both examples request September 2026. yfinance excludes the end date, so its request ends on October 1; Narwhal includes the end date, so its request ends on September 30. The Python library call becomes a standard HTTP request with bearer authentication, explicit currencies and a page limit.
Replace the request URL and authentication, then map the JSON response into your application's fields. The examples use standard fetch in JavaScript and requests in Python, so integration fits an ordinary HTTP client. Keep your key on the server and carry the response's units, dates and missing values into your display or calculations.
The shared cap applies to successful REST and MCP requests together. There are no automatic overage charges. Basic includes 100,000 monthly requests; quotas reset each month even when you pay yearly.
The comparison uses Narwhal's current public contract and the following first-party competitor pages.
Reviewed: