Exclude domains from web search

Pass excluded_domains (max 5) on the web_search tool so Grok skips those hosts when searching and browsing. Base setup: Add web search to a Grok API request. To lock search to a short allowlist instead, see Restrict web search to allowed domains.

xAI SDK

import os

from xai_sdk import Client
from xai_sdk.chat import user
from xai_sdk.tools import web_search

client = Client(api_key=os.getenv("XAI_API_KEY"))
chat = client.chat.create(
    model="grok-4.6",
    tools=[
        web_search(excluded_domains=["example-spam.com", "example-aggregator.com"]),
    ],
)

chat.append(user("Summarize recent coverage of Grok 4.6 releases."))
response = chat.sample()
print(response.content)

OpenAI Responses

{
  "model": "grok-4.6",
  "input": [
    {
      "role": "user",
      "content": "Summarize recent coverage of Grok 4.6 releases."
    }
  ],
  "tools": [
    {
      "type": "web_search",
      "filters": {
        "excluded_domains": ["example-spam.com", "example-aggregator.com"]
      }
    }
  ]
}

curl https://api.x.ai/v1/responses \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -d '{
  "model": "grok-4.6",
  "input": [
    {
      "role": "user",
      "content": "Summarize recent coverage of Grok 4.6 releases."
    }
  ],
  "tools": [
    {
      "type": "web_search",
      "filters": {
        "excluded_domains": ["example-spam.com", "example-aggregator.com"]
      }
    }
  ]
}'

Pitfalls

• excluded_domains and allowed_domains cannot share the same request (max 5 each).
• Domains are host names the tool should skip, not URL paths.
• Console API credits are separate from SuperGrok's weekly pool on grok.com.