x-research（x 研究）

X Research (xAI/Grok)

AI-powered research using xAI's Grok API. Returns AI summaries with citations, not raw tweet data.

Want raw tweets instead? Use these skills: - x-user-timeline - Raw tweets from a user - x-tweet-search - Raw search results - x-tweet-fetch - Raw single tweet - x-user-lookup - User profile data These require X_BEARER_TOKEN instead of XAI_API_KEY.

When to Use

USE THIS SKILL FOR:

• Summarized research with AI analysis
• Current events and breaking news
• Social sentiment ("What are developers saying about Y?")
• X/Twitter trending topics and viral posts
• Emerging tools/frameworks not in documentation yet
• Community opinions on best practices

DON'T USE FOR:

• Raw tweet data (use x-user-timeline, x-tweet-search)
• Specific user's posts verbatim (use x-user-timeline)
• Well-documented APIs (use WebFetch instead)

Setup Requirements

Check if the API key is set:

if [ -z "$XAI_API_KEY" ]; then
  echo "ERROR: XAI_API_KEY is not set"
  echo "1. Get API key from https://x.ai/api"
  echo "2. Add to profile: export XAI_API_KEY=\"your-key\""
  echo "3. Restart terminal and Claude Code"
  exit 1
else
  echo "XAI_API_KEY is configured"
fi

If unavailable, inform the user that XAI_API_KEY must be configured before using this skill.

API Overview

Endpoint: https://api.x.ai/v1/responses

Recommended Model: grok-4-1-fast (specifically trained for agentic search)

Available Models:

• grok-4-1-fast - Recommended for agentic search (auto-selects reasoning mode)
• grok-4-1-fast-reasoning - Explicit reasoning for complex research
• grok-4-1-fast-non-reasoning - Faster responses, simpler queries

Available Search Tools:

• web_search - Searches the internet and browses web pages
• x_search - Semantic and keyword search across X posts

Basic Usage

Simple Query with Search Tools

curl -s "https://api.x.ai/v1/responses" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -d '{
    "model": "grok-4-1-fast",
    "input": [{"role": "user", "content": "[YOUR QUERY]"}],
    "tools": [{"type": "web_search"}, {"type": "x_search"}]
  }' | jq -r '.output[-1].content[0].text'

Query with Usage Tracking (Recommended)

RESPONSE=$(curl -s "https://api.x.ai/v1/responses" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -d '{
    "model": "grok-4-1-fast",
    "input": [{"role": "user", "content": "[YOUR QUERY]"}],
    "tools": [{"type": "web_search"}, {"type": "x_search"}]
  }')

# Extract usage stats
TOOL_CALLS=$(echo "$RESPONSE" | jq -r '.usage.num_server_side_tools_used // 0')
COST_TICKS=$(echo "$RESPONSE" | jq -r '.usage.cost_in_usd_ticks // 0')
COST_USD=$(echo "scale=4; $COST_TICKS / 1000000000" | bc)
echo "Tool calls: $TOOL_CALLS | Estimated cost: \$$COST_USD"
echo ""
echo "$RESPONSE" | jq -r '.output[-1].content[0].text'

Search Tool Parameters

Web Search Options

"tools": [{
  "type": "web_search",
  "allowed_domains": ["github.com", "stackoverflow.com"],
  "excluded_domains": ["pinterest.com"],
  "enable_image_understanding": true
}]

• allowed_domains - Restrict to these domains only (max 5)
• excluded_domains - Exclude these domains (max 5)
• enable_image_understanding - Analyze images found during search

X Search Options

"tools": [{
  "type": "x_search",
  "allowed_x_handles": ["elikimonimus", "anthropaboris"],
  "excluded_x_handles": ["spambot"],
  "from_date": "2025-01-01",
  "to_date": "2025-01-16",
  "enable_image_understanding": true,
  "enable_video_understanding": true
}]

• allowed_x_handles - Only include posts from these accounts (max 10)
• excluded_x_handles - Exclude posts from these accounts (max 10)
• from_date / to_date - ISO8601 date range (YYYY-MM-DD)
• enable_image_understanding - Analyze images in posts
• enable_video_understanding - Analyze videos in posts

Examples

X/Twitter Trending Topics

curl -s "https://api.x.ai/v1/responses" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -d '{
    "model": "grok-4-1-fast",
    "input": [{"role": "user", "content": "What is currently trending on X? Include viral posts and major discussions."}],
    "tools": [{"type": "x_search"}]
  }' | jq -r '.output[-1].content[0].text'

Developer Sentiment on a Topic

curl -s "https://api.x.ai/v1/responses" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -d '{
    "model": "grok-4-1-fast",
    "input": [{"role": "user", "content": "What are developers saying about [TOPIC] on X? Include recent discussions and opinions."}],
    "tools": [{"type": "x_search"}, {"type": "web_search"}]
  }' | jq -r '.output[-1].content[0].text'

News and Web Research

curl -s "https://api.x.ai/v1/responses" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -d '{
    "model": "grok-4-1-fast",
    "input": [{"role": "user", "content": "Latest news and developments about [TOPIC]"}],
    "tools": [{"type": "web_search"}]
  }' | jq -r '.output[-1].content[0].text'

Research with Date Range

curl -s "https://api.x.ai/v1/responses" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -d '{
    "model": "grok-4-1-fast",
    "input": [{"role": "user", "content": "What happened with [TOPIC] last week?"}],
    "tools": [{
      "type": "x_search",
      "from_date": "2025-01-09",
      "to_date": "2025-01-16"
    }, {
      "type": "web_search"
    }]
  }' | jq -r '.output[-1].content[0].text'

Response Structure

The response contains:

{
  "output": [
    {"type": "web_search_call", "status": "completed", ...},
    {"type": "custom_tool_call", "name": "x_semantic_search", ...},
    {
      "type": "message",
      "content": [{
        "type": "output_text",
        "text": "The actual response with [[1]](url) inline citations",
        "annotations": [{"type": "url_citation", "url": "...", ...}]
      }]
    }
  ],
  "citations": ["url1", "url2", ...],
  "usage": {
    "input_tokens": 11408,
    "output_tokens": 2846,
    "num_server_side_tools_used": 8,
    "cost_in_usd_ticks": 429052500
  }
}

Extracting content: jq -r '.output[-1].content[0].text'

Extracting citations: jq -r '.citations[]'

Pricing

Search tools are currently FREE (promotional pricing).

Standard pricing when active:

• Web Search, X Search: $5 per 1,000 tool invocations
• Token costs: Varies by model (~$3-15 per 1M input tokens)

Track costs via response.usage.cost_in_usd_ticks (divide by 1,000,000,000 for USD).

Error Handling

If the API returns an error:

1. Check XAI_API_KEY is set and valid
2. Verify model name is correct (use grok-4-1-fast)
3. Check rate limits haven't been exceeded
4. Ensure tools array is properly formatted
5. Report the error to the user with the API response

Common errors:

• "Internal error" - Usually wrong model name or malformed request
• Timeout - Request took too long (rare with agentic API)

Migration Notes

DEPRECATED (January 12, 2026): The old Live Search API using search_parameters is being deprecated. This skill uses the new agentic tool calling API which is faster and more capable.

Old format (deprecated):

{
  "model": "grok-4-latest",
  "messages": [...],
  "search_parameters": {"mode": "on"}
}

New format (use this):

{
  "model": "grok-4-1-fast",
  "input": [...],
  "tools": [{"type": "web_search"}, {"type": "x_search"}]
}

References

• LLMs.txt (AI-optimized docs): https://docs.x.com/llms.txt
• xAI API Documentation
• Search Tools Guide
• Models Reference
• X.com API v2