google / google/mcp-security

Cannot use MCP servers on corporate proxy

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2025-nov-sprint
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Python
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Description

Is there any documentation on how to use thee MCP servers while on a corporate proxy? I cannot get it to work.

cline_mcp_settings.json:
```
{
"mcpServers": {
"gti": {
"autoApprove": [],
"disabled": false,
"timeout": 30,
"type": "stdio",
"command": "uv",
"args": [
"--directory",
"C:/Users/my_user/github_projects/mcp-security/server/gti/gti_mcp",
"run",
"server.py"
],
"env": {
"VT_APIKEY": "${VT_APIKEY}",
"HTTP_PROXY": "${HTTP_PROXY}",
"HTTPS_PROXY": "${HTTPS_PROXY}"
}
}
}
}
```

Have HTTP_PROXY and HTTPS_PROXY set as system wide Windows environment variables. I keep getting the following error:

```
Error:
Error executing tool search_malware_families: Cannot connect to host www.virustotal.com:443 ssl:default [The semaphore timeout period has expired]
```

My MCP servers are connected:

Image

SSL certificate validation is strictly enforced so the proxy is passing it's certificate, not the one for https://www.virustotal.com/

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