> ## Documentation Index
> Fetch the complete documentation index at: https://aimp.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Concepts

> The product terms you need before using Marketplace, Playground, API keys, and billing.

# Concepts

These terms are the minimum vocabulary needed to use AIMP correctly.

## Workspace

A workspace owns API keys, usage, billing, and provider assets. Always confirm
the active workspace before creating keys, running models, or publishing models.

## Marketplace

Marketplace is the catalog of published models. Use it to inspect the model
description, publisher, supported operations, input types, pricing, and links to
Playground.

## Playground

Playground is the safest place to test a model before integration. It builds the
same run request shape used by the API: `model`, `mode`, `scope`, `input`, and
`params`.

## API key

An API key authenticates server-to-server requests. Use `X-API-Key` when calling
the Gateway from a backend service. API keys are shown once when created.

## Model operation

An operation is a model-owned action such as `execute`, `search`, `index`, or a
custom mode declared by the model. If you are unsure which mode to call, open the
model in Marketplace or Playground first.

## Scope

`scope` separates use cases for execution and vector-backed workflows. The common
interactive scope is `playground`. Vector-enabled modes require a scope.

## Usage and billing

Runs are associated with the active workspace. Check usage and wallet status
before production traffic so that rate limits, balance, and payment issues are
visible before they affect users.