About the Indicators API Documentation – World Bank Data Help Desk
Note: version 2 of the Indicators API was released several years ago, and version 1 was officially retired in November , 2018. Version 1 was discontinued entirely on June 19, 2020 (see link). If you access the older endpoints you will receive a "Resource not found" error. Use the information here to update your code.
API
This page provides detailed information on how to programmatically retrieve data from the OECD Data Explorer via the API
API Documentation | Alpha Vantage
API Documentation for Alpha Vantage. Alpha Vantage offers free JSON APIs for realtime and historical stock market data & options data with over 50 technical indicators. Supports intraday, daily, weekly, and monthly stock quotes and technical analysis with charting-ready time series.
Clarivate Developer Portal
Click on an API below to learn more and view subscription options. Or find information about Web of Science, Cortellis, or Derwent Innovation APIs by clicking on the appropriate links. Note: The approval process may take a few days.
Clarivate Developer Portal - Swagger UI
API Overview | OpenAlex technical documentation
The API is the primary way to get OpenAlex data. It's free and requires no authentication. The daily limit for API calls is 100,000 requests per user per day. For best performance, add your email to all API requests, like [email protected].
Unpaywall
Semantic Scholar Academic Graph API | Semantic Scholar
Build projects that accelerate scientific progress with the Semantic Scholar Academic Graph API

The unifying REST API for all the OpenCitations Indexes
Old Version of OpenCitations INDEX API
CORE API Documentation
Introduction to the DataCite REST API
About the DataCite REST API The DataCite REST API enables retrieval, creation, and update of DataCite DOI metadata records and account information. The API is generally RESTful and returns results in JSON (following the JSON:API specification). REST API Reference 📘 Access the REST API Reference to ...
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Swagger UI
ROR
In December 2025, version 1 of the ROR schema and API will be sunset, meaning that ROR API requests with v1 in the path will no longer return a response, v1 files will no longer be included in the ROR data dump, and v1 documentation will no longer be available. Read more in our changelog.

LibGuides: APIs for Scholarly Resources: CEU Library APIs
About DOAJ – DOAJ
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