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Fetch the complete documentation index at: https://mintlify.com/cloudwaddie/lmarenabridge/llms.txt

Use this file to discover all available pages before exploring further.

Run LMArena Bridge behind a reverse proxy in production to terminate SSL, expose a custom domain, and keep port 8000 off the public internet.

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Why proxy_buffering off is required

LMArena Bridge streams responses using Server-Sent Events (SSE). By default, nginx buffers the upstream response body before forwarding it to the client. With SSE, this means chunks are held in the buffer and never delivered until the stream ends — which breaks streaming entirely. Setting proxy_buffering off and proxy_cache off forces nginx to forward each chunk to the client as soon as it arrives from the upstream.
Omitting proxy_buffering off will cause streaming responses to appear frozen until the request completes. Always include both directives in your location block.

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Nginx

Create a server block with SSL and the required streaming directives:
/etc/nginx/sites-available/lmarenabridge
server {
    listen 443 ssl;
    server_name api.yourdomain.com;
    
    ssl_certificate /path/to/cert.pem;
    ssl_certificate_key /path/to/key.pem;
    
    location / {
        proxy_pass http://localhost:8000;
        proxy_set_header Host $host;
        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;
        
        # For streaming responses
        proxy_buffering off;
        proxy_cache off;
    }
}
Enable the site and reload nginx: 
sudo ln -s /etc/nginx/sites-available/lmarenabridge /etc/nginx/sites-enabled/
sudo nginx -t && sudo systemctl reload nginx

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Caddy

Caddy handles SSL certificates automatically via Let’s Encrypt. Add a block to your Caddyfile:
Caddyfile
api.yourdomain.com {
    reverse_proxy localhost:8000 {
        flush_interval -1
    }
}
The flush_interval -1 directive tells Caddy to flush each response chunk immediately, which is equivalent to disabling buffering for SSE streams.
Caddy provisions and renews TLS certificates automatically. No manual certificate management is needed.

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