An API is often made up of different parts which act as tools or services that are available to the programmer. A program or a programmer that uses one of these parts is said to call that …

The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. Our more than 600 corporate members, …

Nov 10, 2025 · APIs, or Application Programming Interfaces, are the invisible backbone of modern software development. They enable different applications, platforms, or systems to …

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Complete reference documentation for the OpenAI API, including examples and code snippets for our endpoints in Python, cURL, and Node.js.

At American Proficiency Institute every aspect of your proficiency testing is controlled by you -- how you choose to receive your test kits, how you report results, and whether to review test …

Developers use APIs to bridge the gaps between small, discrete chunks of code in order to create applications that are powerful, resilient, secure, and able to meet user needs. Even though you …

API was formed in 1919 as a standards-setting organization and has developed more than 800 standards to enhance operational and environmental safety, efficiency and sustainability.

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View 2025 API ICP exam dates, application deadlines, and fees. See which programs are offered remotely. Apply today to secure your spot!