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Claim your free API key with lifetime access. We do not send promotional or marketing materials to our users - we will reach out only in the event of launching new API features or server-side updates.
Our API Documentation and Frequently Asked Questions below provide a range of references to the technical and non-technical aspects of Alpha Vantage. You can also submit your questions, feedbacks, and feature requests by email. We are looking forward to hearing from you!
Frequently Asked Questions
Are Alpha Vantage APIs realtime?
The latest data point of each time series output is derived from the current trading day, updated realtime.
What is the timeframe for the stock historical data?
Our Stock Time Series Data provides realtime and historical equity data in 4 different temporal resolutions: (1) intraday, (2) daily, (3) weekly, and (4) monthly. Daily, weekly, and monthly time series contain up to 20 years of historical data. The intraday time series typically spans the last 10 to 15 trading days.
What is the expected server-side performance (e.g., throughput time) for the API service?
Based on the latest instrumentation, the throughput time for our API endpoint is under 500 milliseconds per request at 25% to 75% percentile. While we are proud to provide free API service with no daily/weekly/monthly call limits, we recommend that API call frequency does not extend far beyond ~100 calls per minute so that we can continue to deliver the optimal server-side performance. If you would like to target a much larger API call volume, please drop us a note at firstname.lastname@example.org.
I have built a library/wrapper for Alpha Vantage with a specific programming language. May I open-source it on GitHub?
Certainly - we truly appreciate the help and support from the community to make Alpha Vantage even more accessible and developer-friendly. However, we ask that your language-specific library/wrapper preserves the content of our JSON/CSV responses in both success and error cases. We consider it a top priority that our users get the original debugging and troubleshooting information from Alpha Vantage.
I would like to improve an existing API or propose a new technical indicator / feature to Alpha Vantage. What should I do?
We are obssessed with delivering the best user experience with the highest technical expertise. Please contact us anytime and we can go from there!