---
title: "Lsa Top Level Customers"
method: GET
path: "/lsa/top-level-customers"
tags: ["lsa"]
---

# Lsa Top Level Customers

`GET /lsa/top-level-customers`

## Request

- Base URL: `https://api-docs.upsmith.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api-docs.upsmith.com/lsa/top-level-customers`
- Auth: one of:
  - API key in header `x-api-key`
  - HTTP bearer

Phase A of the progressive picker — directly-accessible customers,
classified as leaf advertisers (probed inline) or MCCs (expand via
/lsa/under-manager).

## Headers

- `organization-id` string, nullable
- `x-user-id` string, nullable
- `timezone` string
- `x-actor-email` string, nullable
- `x-request-source` string, nullable
- `x-operation-id` string, nullable
- `x-commit-message` string, nullable
- `x-confirmation-id` string, nullable
- `x-chat-id` string, nullable

## Response `200`

Successful Response

- LsaTopLevelCustomer[]
  - `id` string, required
  - `resource_name` string, required
  - `is_manager` boolean, required
  - `descriptive_name` string, nullable
  - `login_customer_id` string, nullable
  - `has_lsa` boolean, nullable
  - `linked_organization_id` string, nullable
  - `linked_organization_name` string, nullable

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/upsmith/apis/upsmith-api.md) - [All operations](https://skmtc.dev/upsmith/apis/upsmith-api/llms.txt) - [OpenAPI document](https://skmtc.dev/upsmith/apis/upsmith-api/revisions/86e2c2bd93af?raw)