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mcp/harbor
Gemini CLI

attack surface mcp server for Gemini CLI

io.github.cyanheads/attack-surface-mcp-server

Passive external attack-surface mapping: CT subdomains, DNS, TLS, HTTP posture, RDAP/WHOIS, Shodan.

client:Gemini CLI transport:stdio runtime:npm

Install attack surface mcp server in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "attack-surface-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/attack-surface-mcp-server"
      ],
      "env": {
        "SHODAN_API_KEY": "<SHODAN_API_KEY>",
        "CERTSPOTTER_API_KEY": "<CERTSPOTTER_API_KEY>",
        "ATTACKSURFACE_DEFAULT_RESOLVERS": "<ATTACKSURFACE_DEFAULT_RESOLVERS>",
        "ATTACKSURFACE_HTTP_USER_AGENT": "<ATTACKSURFACE_HTTP_USER_AGENT>",
        "ATTACKSURFACE_MAX_SUBDOMAINS": "<ATTACKSURFACE_MAX_SUBDOMAINS>",
        "ATTACKSURFACE_RDAP_BOOTSTRAP_URL": "<ATTACKSURFACE_RDAP_BOOTSTRAP_URL>",
        "ATTACKSURFACE_ALLOW_PRIVATE_TARGETS": "<ATTACKSURFACE_ALLOW_PRIVATE_TARGETS>",
        "MCP_LOG_LEVEL": "<MCP_LOG_LEVEL>"
      }
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs

attack surface mcp server in other clients

attack surface mcp server MCP server