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

# Instances

When working with the API, you will find two categories of objects: platform-level objects and
[instance-level](/api-reference/instances/create-an-instance) objects.

When working with instance-level objects, you must pass the special header `teal-instance-id`, which
should contain the Instance ID to be accessed when making the request. For example, here is a request
to get the ledgers for an instance:

```Shell theme={null}
curl --request get \
--url 'https://api.sandbox.teal.dev/v0/ledgers' \
--header 'Authorization: Bearer <token>' \
--header 'teal-instance-id: <instance_id>'
```