> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.another-horizon.eu/llms.txt
> Use this file to discover all available pages before exploring further.

# Reverse proxy

> Configure a custom reverse proxy to serve your documentation.

<Note>
  Reverse proxy configurations are only supported for [Custom plans](https://mintlify.com/pricing?ref=reverse-proxy).
</Note>

To serve your documentation through a custom reverse proxy, you must configure routing rules, caching policies, and header forwarding.

When you implement a reverse proxy, monitor for potential issues with domain verification, SSL certificate provisioning, authentication flows, performance, and analytics tracking.

## Routing configuration

Proxy these paths to your Mintlify subdomain with the specified caching policies:

| Path                              | Destination                     | Caching       |
| --------------------------------- | ------------------------------- | ------------- |
| `/.well-known/acme-challenge/*`   | `<your-subdomain>.mintlify.app` | No cache      |
| `/.well-known/vercel/*`           | `<your-subdomain>.mintlify.app` | No cache      |
| `/mintlify-assets/_next/static/*` | `<your-subdomain>.mintlify.app` | Cache enabled |
| `/_mintlify/*`                    | `<your-subdomain>.mintlify.app` | No cache      |
| `/*`                              | `<your-subdomain>.mintlify.app` | No cache      |
| `/`                               | `<your-subdomain>.mintlify.app` | No cache      |

## Required header configuration

Configure your reverse proxy with these header requirements:

* **Origin**: Contains the target subdomain `<your-subdomain>.mintlify.app`
* **X-Forwarded-For**: Preserves client IP information
* **X-Forwarded-Proto**: Preserves original protocol (HTTP/HTTPS)
* **X-Real-IP**: Forwards the real client IP address
* **User-Agent**: Forwards the user agent

<Warning>
  Ensure that the `Host` header is not forwarded
</Warning>

## Example nginx configuration

```nginx theme={null}
server {
    listen 80;
    server_name <your-domain>.com;

    # Let's Encrypt verification paths
    location ~ ^/\.well-known/acme-challenge/ {
        proxy_pass https://<your-subdomain>.mintlify.app;
        proxy_set_header Origin <your-subdomain>.mintlify.app;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header User-Agent $http_user_agent;

        # Disable caching for verification paths
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # Vercel verification paths
    location ~ ^/\.well-known/vercel/ {
        proxy_pass https://<your-subdomain>.mintlify.app;
        proxy_set_header Origin <your-subdomain>.mintlify.app;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header User-Agent $http_user_agent;

        # Disable caching for verification paths
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # Static assets with caching
    location ~ ^/mintlify-assets/_next/static/ {
        proxy_pass https://<your-subdomain>.mintlify.app;
        proxy_set_header Origin <your-subdomain>.mintlify.app;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header User-Agent $http_user_agent;

        # Enable caching for static assets
        add_header Cache-Control "public, max-age=86400";
    }

    # Mintlify-specific paths
    location ~ ^/_mintlify/ {
        proxy_pass https://<your-subdomain>.mintlify.app;
        proxy_set_header Origin <your-subdomain>.mintlify.app;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header User-Agent $http_user_agent;

        # Disable caching for Mintlify paths
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # Root path
    location = / {
        proxy_pass https://<your-subdomain>.mintlify.app;
        proxy_set_header Origin <your-subdomain>.mintlify.app;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header User-Agent $http_user_agent;

        # Disable caching for dynamic content
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # All other documentation paths
    location / {
        proxy_pass https://<your-subdomain>.mintlify.app;
        proxy_set_header Origin <your-subdomain>.mintlify.app;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header User-Agent $http_user_agent;

        # Disable caching for dynamic content
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }
}
```

## Troubleshooting

### 404 error

**Symptoms**: Documentation loads, but features don't work. API calls fail.

**Cause**: `Host` header is being forwarded or `Origin` header is missing.

**Solution**:

* Remove `Host` header forwarding
* Set `Origin` header to `<your-subdomain>.mintlify.app`

### Performance issues

**Symptoms**: Slow page loads and layout shifts.

**Cause**: Incorrect caching configuration.

**Solution**: Enable caching only for `/mintlify-assets/_next/static/*` paths.