---
title: brand_attach_advertiser
description: Attach an ad account to a brand, so agents can resolve brand context from the account.
---

Attaches an **ad account** to a brand, so that anyone calling [`brand_resolve`](/mcp/tools/brand-resolve) on that account finds this brand's context. [`brand_detach_advertiser`](/mcp/tools/brand-detach-advertiser) removes the link again.

## Input

Both tools take the same two fields:

| Field           | Type     | Required | Description                  |
| --------------- | -------- | -------- | ---------------------------- |
| `brand_name`    | `string` | yes      | The brand slug.              |
| `advertiser_id` | `string` | yes      | The ad account id (`acc_…`). |

## Notes

- **Attaching twice is harmless** — the second call says the same thing as the first.
- **An account can belong to several brands.** Attaching to a second brand doesn't detach the first; `brand_resolve` will return both.
- **Detaching removes only the link.** The brand, its context and its files are untouched.

:::warning[Only your own ad accounts]

You can only attach accounts already connected to your organization. Anything else is rejected — check [`list_advertisers`](/mcp/tools/list-advertisers) for what's available.

:::

Requires the `brand:write` scope.