FAQ

Do I need a paid Alpha Vantage plan to use this integration?

No — a free Alpha Vantage API key works for most entities, including time series dailies, weeklies, monthlies, intradays, and quotes. However, some entities (like Time series daily adjusted) are premium-only and require a paid Alpha Vantage subscription. Free accounts are also subject to rate limits of 25 requests per day and 5 per minute.

How do I find my Alpha Vantage API key?

Sign in to your Alpha Vantage account at alphavantage.co. Your API key is displayed on your account dashboard. If you haven't signed up yet, you can claim a free key from the homepage.

Can I track multiple stocks in one data flow?

Yes — Alpha Vantage returns data for one stock symbol per API call, so each Coupler.io source is limited to a single ticker. However, you can have multiple sources per data flow. Use Data sets step in the data flow setup wizard to consolidate the data in one place.

What's the difference between adjusted and unadjusted data?

Unadjusted data shows the raw historical prices as they were on each trading day. Adjusted data retroactively corrects those prices to account for dividends and stock splits, giving you an accurate picture of actual investment returns over time. If you're building performance charts or calculating returns, always use adjusted entities.

What does the output size setting do?

The output size controls how much historical data is returned. Compact returns only the last 100 data points — useful for lightweight, frequent refreshes. Full returns the complete available history for the symbol, spanning years of data. Use full output for initial historical backfills and compact for ongoing scheduled updates.

Why is my intraday import not returning any data?

The interval parameter is required for the Time series intradays entity. Make sure you've selected an interval in the Advanced settings step. Without it, the data flow may fail silently or return unexpected results.

How often can I schedule my data flows?

You can set any schedule in Coupler.io, but your Alpha Vantage API plan determines how many requests you can make. Free accounts are limited to 25 requests per day, so scheduling more than 25 data flows or running them too frequently will exhaust your quota. Premium Alpha Vantage plans have significantly higher limits.

Can I get data for stocks listed on non-US exchanges?

Yes — Alpha Vantage supports international equities. When entering the stock symbol, append the exchange code as a suffix (e.g., TSCO.LON for Tesco on the London Stock Exchange). If you enter only the ticker without the exchange suffix, you may get data for a different security or no results at all.

For a full list of available fields and data combinations, see the Data Overview article. If you're running into errors or missing data, check the Common Issues article for solutions.