Searches the web using SearXNG and returns a list of results, each with a title, URL, and content snippet. CRITICAL: The required parameter name is exactly query (not prompt, q, or any other name). Calls an external SearXNG instance; availability depends on the SEARXNG_URL configuration. Use pageno to paginate results; combine time_range and language to narrow scope. To read the full text of a result URL, follow up with web_url_read.

Returns autocomplete suggestions from the configured SearXNG instance. Use this to refine vague or partial queries before searching.

Discovers capabilities from all reachable configured SearXNG instances via /config, including categories.common/available, engines.common/available, defaults, locales, and plugins.

Fetches a URL and returns readable content as markdown. Content-type aware: HTML is converted to markdown; JSON is pretty-printed; plain text, YAML, TOML, and XML are returned as fenced readable text. PDF text extraction is supported with bounded input, output, page count, time, concurrency, and memory; OCR is not supported. Binary, media, archive, and octet-stream downloads other than PDFs are intentionally rejected instead of being returned as raw bytes. When the operator configures browser solvers, mcp-searxng attempts FlareSolverr first and then Byparr only after a busy or transient-unavailable acquisition; cache hits bypass acquisition and a final busy or unavailable provider uses one uncached direct-fetch fallback. Three modes: (1) Full content — omit filtering params; use startChar/maxLength to paginate large pages. (2) Section extraction — set section to return content under a specific heading. (3) Headings only — set readHeadings: true to list all headings (mutually exclusive with other filtering params). Returns an error string if the URL is unreachable or content cannot be extracted. Use after searxng_web_search to read the full content of individual result URLs.