vault/website/content/api-docs/system/config-ui-headers.mdx
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Co-authored-by: Tu Nguyen <im2nguyen@users.noreply.github.com>

---------

Co-authored-by: jonathanfrappier <92055993+jonathanfrappier@users.noreply.github.com>
Co-authored-by: Tu Nguyen <im2nguyen@users.noreply.github.com>
2025-07-22 08:12:22 -07:00

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---
layout: api
page_title: /sys/config/ui/headers - HTTP API
description: The '/sys/config/ui/headers' endpoint configures the UI.
---
> [!IMPORTANT]
> **Documentation Update:** Product documentation, which were located in this repository under `/website`, are now located in [`hashicorp/web-unified-docs`](https://github.com/hashicorp/web-unified-docs), colocated with all other product documentation. Contributions to this content should be done in the `web-unified-docs` repo, and not this one. Changes made to `/website` content in this repo will not be reflected on the developer.hashicorp.com website.
# `/sys/config/ui/headers`
@include 'alerts/restricted-root.mdx'
The `/sys/config/ui/headers` endpoint is used to configure UI header settings.
- **`sudo` required**  All of these endpoints require the `sudo` capability in
addition to any path-specific capabilities.
## Read UI header settings
This endpoint returns the given UI header configuration.
| Method | Path |
| :----- | :----------------------------- |
| `GET` | `/sys/config/ui/headers/:name` |
### Parameters
- `name` `(string: <required>)`  The name of the custom header.
- `multivalue` `(bool: <optional>)` - Returns multiple values if true.
### Sample request
```shell-session
$ curl \
--header "X-Vault-Token: ..." \
http://127.0.0.1:8200/v1/sys/config/ui/headers/X-Custom-Header
```
### Sample response
```json
{
"value": "custom-value"
}
```
### Sample request (Multi value)
```shell-session
$ curl \
--header "X-Vault-Token: ..." \
http://127.0.0.1:8200/v1/sys/config/ui/headers/X-Custom-Header?multivalue=true
```
### Sample response
```json
{
"values": ["custom-value-1", "custom-value-2"]
}
```
## Configure UI headers
This endpoint allows configuring the values to be returned for the UI header.
| Method | Path |
| :----- | :----------------------------- |
| `POST` | `/sys/config/ui/headers/:name` |
### Parameters
- `name` `(string: <required>)`  The name of the custom header.
- `values` `(list: <required>)` - The values to be returned from the header.
### Sample payload
```json
{
"values": ["custom value 1", "custom value 2"]
}
```
### Sample request
```shell-session
$ curl \
--header "X-Vault-Token: ..." \
--request POST \
--data @payload.json \
http://127.0.0.1:8200/v1/sys/config/ui/headers/X-Custom-Header
```
## Delete a UI header
This endpoint removes a UI header.
| Method | Path |
| :------- | :----------------------------- |
| `DELETE` | `/sys/config/ui/headers/:name` |
### Sample request
```shell-session
$ curl \
--header "X-Vault-Token: ..." \
--request DELETE \
http://127.0.0.1:8200/v1/sys/config/ui/headers/X-Custom-Header
```
## List UI headers
This endpoint returns a list of configured UI headers.
| Method | Path |
| :----- | :----------------------- |
| `LIST` | `/sys/config/ui/headers` |
### Sample request
```shell-session
$ curl \
--header "X-Vault-Token: ..." \
--request LIST \
http://127.0.0.1:8200/v1/sys/config/ui/headers
```
### Sample response
```json
{
"data": {
"keys": ["X-Custom...", "X-Header..."]
}
}
```