StackDocs glossary

The technical language, explained before it gets in the way.

Short definitions for understanding a product page or documentation without opening ten more tabs.

Skill

Reusable instructions and resources that teach AI how to carry out a specific job.

Connector

An authorized link between AI and an external service, account or data source.

Plugin

An installable package that may bundle skills, connectors, MCP servers and other capabilities.

MCP

An open protocol for presenting tools and context to compatible AI applications.

API

A structured interface that lets one system request data or actions from another.

Endpoint

A specific API address representing one resource or function.

Request

The message sent to a system, including its address, method, data and authorization.

Response

The result returned by an API, usually including data and a status code.

Webhook

An automatic notification sent to your application when an event occurs.

Token

A credential used for authorization, or a unit used to measure text in an AI model.

API key

A secret key that identifies and authorizes an application.

OAuth

A flow that lets a person authorize access without sharing their password with an app.

JSON

A text format used to structure and exchange data between systems.

RAG

A technique that retrieves relevant information before AI generates an answer.

Rate limit

The number of requests allowed during a defined period.

Sandbox

A test environment separated from real data and billing.

Human in the loop

A person reviews, approves or handles exceptions in an AI-assisted process.

Least privilege

Granting only the access required for a task, and nothing more.