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

# Customers

> Looking up a customer, their order history, and their store-credit balance.

**4 commands.** Looking up a customer, their order history, and their store-credit balance.

Tiers (least to most privileged) and what each can do are explained on the [Commands overview](/sellauth/commands/overview#permission-tiers).

<AccordionGroup>
  <Accordion title="`/customer`">
    **Tier:** `support`

    Looks up a customer's order history.

    **SellAuth endpoint:** `GET /shops/{id}/invoices`
  </Accordion>

  <Accordion title="`/customer_balance`">
    **Tier:** `support`

    Shows a customer's store-credit balance.

    **SellAuth endpoints:**

    * `GET /shops/{id}`
    * `GET /shops/{id}/customers`
  </Accordion>

  <Accordion title="`/edit_balance`">
    **Tier:** `manager`

    Adjusts a customer's store-credit balance.

    **SellAuth endpoints:**

    * `GET /shops/{id}`
    * `GET /shops/{id}/customers`
    * `PUT /shops/{id}/customers/{id}/balance`
  </Accordion>

  <Accordion title="`/keylookup`">
    **Tier:** `support`

    Looks up which invoice and customer a delivered licence key belongs to.

    **SellAuth endpoints:**

    * `GET /shops/{id}/invoices`
    * `GET /shops/{id}/invoices/{id}`
  </Accordion>
</AccordionGroup>