---
title: Integrations
description: "An integration is something Executor connects to, defined by an MCP server, an OpenAPI spec, or a GraphQL endpoint."
---

An **integration** is something Executor can connect to. Each integration is defined by
a source that describes the available tools:

- an **MCP server**
- an **OpenAPI** specification
- a **GraphQL** endpoint

The integration describes the catalog of tools; on its own it isn't a live, authenticated
connection. To actually call tools, you create a [connection](/concepts/connections).

<Card title="Add your first integration →" href="/local/cli" horizontal>
  See the CLI page for adding an integration from the web UI or the CLI.
</Card>