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AI glossary

API

An API (application programming interface) is a defined way for two software systems to talk to each other and share data or features.

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In this guide

  1. 1What API means
  2. 2Why API matters

What API means

An API is a set of rules that lets one piece of software request something from another. It acts like a messenger: it carries your request to a system, then brings back the response, without you needing to know how that system works inside.

A common comparison is a restaurant waiter. You order from a menu, the waiter takes your request to the kitchen, and brings back your meal. An API does the same between apps - letting your tool ask an AI service for an answer, for example.

Why API matters

APIs are how AI gets connected to the apps you actually use, so the concept is essential for building automations. The good news is that no-code tools handle the technical side for you.

APIs let your automations connect AI to email, sheets, and CRMs
No-code tools use APIs behind the scenes so you do not have to code
Understanding APIs helps you see what is possible to connect
It is a core concept in building real AI workflows

Frequently asked questions

No. No-code platforms like Make and Zapier connect to APIs for you through visual settings, so you can link AI to other apps without writing any code.

More AI terms

Workflow AutomationSetting up a series of tasks to run automatically by connecting your apps and tools together.Retrieval-Augmented GenerationA technique that lets an AI look up relevant information first, then use it to give a more accurate answer.EmbeddingA way of turning text or other data into numbers that capture meaning, so AI can compare similarity.Vector DatabaseA database built to store embeddings and quickly find information by meaning rather than exact words.AI OrchestrationCoordinating multiple AI models, tools, and steps so they work together as one smooth system.Structured OutputAI responses returned in a fixed, organized format so other software can use them reliably.

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