# Built-in Tools
Grok provides several built-in tools that can be enabled without defining custom function schemas.
## Web Search Tools
### web_search
Search the web for current information.
```json
{
"tools": [{"type": "web_search"}]
}
```
### web_search_with_snippets
Search the web and return relevant text snippets from results.
```json
{
"tools": [{"type": "web_search_with_snippets"}]
}
```
### browse_page
Fetch and read content from a specific URL.
```json
{
"tools": [{"type": "browse_page"}]
}
```
## X (Twitter) Tools
### x_user_search
Search for X users by name, handle, or description.
### x_keyword_search
Search X posts by keywords.
### x_semantic_search
Search X posts using semantic/meaning-based matching.
### x_thread_fetch
Fetch a complete X thread given a post ID.
## Code Execution
### code_execution
Execute Python code in a sandboxed environment.
```json
{
"tools": [{"type": "code_execution"}]
}
```
Capabilities:
- Run Python code safely
- Access to common libraries (numpy, pandas, matplotlib, etc.)
- Generate visualizations
- Process data
## Document Tools
### collections_search
Search through document collections uploaded to your account.
### attachment_search
Search through file attachments in the conversation.
## Using Built-in Tools
Enable built-in tools by adding them to the `tools` array:
```json
{
"model": "grok-4",
"messages": [
{"role": "user", "content": "Search for the latest news about AI"}
],
"tools": [
{"type": "web_search"},
{"type": "code_execution"}
]
}
```
## Combining with Custom Functions
You can use built-in tools alongside custom functions:
```json
{
"tools": [
{"type": "web_search"},
{
"type": "function",
"function": {
"name": "save_to_database",
"description": "Save search results to database",
"parameters": {...}
}
}
]
}
```
## Grounding with Web Search
Web search tools provide grounding - the model can cite sources and provide up-to-date information beyond its training data.
## Best Practices
1. **Enable only needed tools**: Each tool adds complexity; enable only what you need
2. **Handle rate limits**: Built-in tools may have usage limits
3. **Review outputs**: Web search results should be validated for accuracy
4. **Privacy considerations**: X search tools may return public user data
