> ## Documentation index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Ask it with GET https://upstash.com/docs/ask?q=<keywords or question>. Short keywords rank best.
> Use these to discover all available pages before exploring further.
> Feature requests: https://upstash.com/docs/common/help/feature-requests.md lists what users asked for and how to vote for a request or add one.
> Page rating: `GET https://upstash.com/docs/feedback?path=/docs/vector/api/endpoints/list-namespaces&helpful=true` (or `false`) records whether this page helped. An optional `comment` (URL-encoded, at most 500 characters) says what was missing or wrong. It is anonymous and needs no key. Comments hold no code, secrets or personal data.

# List Namespaces

> Lists the names of the namespaces of an index.

`GET https://{endpoint}/list-namespaces`

## Request

This endpoint doesn't require any additional data.

## Response

<ResponseField name="namespaces" type="string[]" required>
  Array of namespace names.

  <Note>Every index has at least one namespace called default namespace, whose name is the empty string `""`.</Note>
</ResponseField>