> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mcp-use.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Dependencies
> Context helpers for accessing authentication in tools API Documentation
export const RandomGradientBackground = ({className, color, children, grayscaled = false}) => {
const saturation = useMemo(() => {
if (color) {
const values = color.split("(")[1].split(")")[0].trim().split(/\s+/);
return parseFloat(values[1] || "0");
}
return grayscaled ? 0 : 0.2;
}, [color, grayscaled]);
const lightness = useMemo(() => {
if (color) {
const values = color.split("(")[1].split(")")[0].trim().split(/\s+/);
return parseFloat(values[0] || "0.5");
}
return grayscaled ? 0.3 : 0.4;
}, [color, grayscaled]);
const randomHue = useMemo(() => {
if (color) {
const values = color.split("(")[1].split(")")[0].trim().split(/\s+/);
return parseFloat(values[2] || "0");
}
return Math.floor(Math.random() * 360);
}, [color]);
const randomColor = useMemo(() => {
if (color) {
return color;
}
return `oklch(${Math.min(lightness, 1)} ${saturation} ${randomHue})`;
}, [randomHue, saturation, lightness]);
const lightColor = useMemo(() => {
return `oklch(${Math.min(lightness * 2, 1)} ${saturation} ${randomHue})`;
}, [randomHue, saturation, lightness, color]);
const direction = useMemo(() => {
return Math.floor(Math.random() * 360);
}, [randomHue]);
const brightnessFilter = useMemo(() => {
return "1000%";
}, []);
return ;
};
View the source code for this module on GitHub: [https://github.com/mcp-use/mcp-use/blob/main/libraries/python/mcp\_use/server/auth/dependencies.py](https://github.com/mcp-use/mcp-use/blob/main/libraries/python/mcp_use/server/auth/dependencies.py)
Context helpers for accessing authentication in tools.
## get\_access\_token
### `function` get\_access\_token
Get the current authenticated user's access token.
Returns None if the request is not authenticated.
Example:
```python theme={null}
from mcp_use.server.auth import get_access_token
@server.tool()
def whoami() -> str:
token = get_access_token()
if not token:
return "Not authenticated"
return f"Hello \{token.claims.get('email')\}"
```
```python theme={null}
from mcp_use.server.auth.dependencies import get_access_token
```
**Returns**
>
**Signature**
```python wrap theme={null}
def get_access_token():
```
## require\_auth
### `function` require\_auth
Get the access token or raise AuthenticationError if not authenticated.
Example:
```python theme={null}
from mcp_use.server.auth import require_auth
@server.tool()
def admin_action() -> str:
token = require_auth() # Raises if not authenticated
if "admin" not in token.scopes:
return "Admin scope required"
return "Admin action performed"
```
```python theme={null}
from mcp_use.server.auth.dependencies import require_auth
```
**Returns**
>
**Signature**
```python wrap theme={null}
def require_auth():
```
## set\_access\_token
### `function` set\_access\_token
Set the current access token (called by AuthMiddleware).
```python theme={null}
from mcp_use.server.auth.dependencies import set_access_token
```
**Parameters**
> Parameter value
**Signature**
```python wrap theme={null}
def set_access_token(token: AccessToken | None):
```