llm_error
Why the LLM step degraded
How to use it
llm_error is exposed by the Crawl4ai MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the llm_error tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Crawl4ai MCP
$
pip install --upgrade pipOther tools in Crawl4ai MCP (18)
blocked
Likely anti-bot / verification / denied result
content
Markdown or HTML
content_format
markdown or html
engine
auto
fallback_engines_tried
Engines that failed before the successful one
fetch_urls
final_url
Final resolved URL after redirects
lang
""
links
Normalized extracted links
llm_used
Whether LLM enhancement was actually applied
max_results
10
query
(required)
results
List of {title, url, snippet}
search_web
title
Extracted title
total
Number of results
url
Original URL
video_metadata
Present for supported video transcript extraction results