Search the web across several independent engines at once and get back one de-duplicated, re-ranked result list. Results from every engine are merged with Reciprocal Rank Fusion, so a page several engines agree on outranks a page only one engine found — this is materially more stable than querying a single provider. Runs with no API key by default; engines that are blocked or failing are skipped automatically and reported. Prefer this over fetch_url when you do not yet know which page has the answer. Use research() when you want the pages read for you as well.

One call that does the whole mechanical research loop: search several engines, derive extra queries from the vocabulary of the results, fetch the most relevant and diverse sources, then extract the passages from each that actually answer the question. Returns a Markdown brief with numbered, citable sources and verbatim quoted passages — it does NOT paraphrase, because this server has no language model; you write the synthesis from the evidence it gathers. Use this instead of chaining web_search and several fetch_url calls whenever you need more than a snippet. depth 1 = the query as written. depth 2 (default) = the query plus expansions derived from what the first page of results is actually about. depth 3 = broader expansion and more sources.

Fetch one web page or document and return its main content as clean Markdown, with the navigation, adverts and cookie banners removed. Handles HTML (via a readability pass), PDF, DOCX, XLSX, PPTX, EPUB, ODT, CSV, JSON and plain text. Results are stored in a local SQLite index, so reading the same URL again is instant and the page becomes searchable offline with search_index. Long pages are truncated rather than refused: the response reports a next offset you can pass back to continue. robots.txt is honoured by default and private/loopback addresses are refused as a safety measure.

Fetch up to 12 URLs concurrently and return each as Markdown under its own heading. Cheaper and faster than calling fetch_url repeatedly because the requests overlap. Failures are reported per URL instead of failing the whole call.

Read a document from a local path or a URL and return its text as Markdown. Supports PDF, DOCX, XLSX, PPTX, EPUB, ODT, CSV, JSON, HTML and plain text. Spreadsheets become Markdown tables, presentations become one section per slide, DOCX keeps headings, lists and tables, and PDFs get their hyphenation and column artefacts repaired. Everything is parsed on this machine — no upload, no conversion service.

Full-text search over every page this server has already fetched on this machine, using a local SQLite FTS5 index (with CJK bigram support). Use it to recall something you read earlier in the session, to avoid re-fetching, or to work offline. Returns cached page URLs, titles and highlighted snippets — and it costs no network requests at all.

Report on, prune, clear or compact the local cache that stores fetched pages and recent engine responses. stats is safe and cheap; clear and prune delete data permanently.

Show every engine this server knows about: what it indexes, whether it needs an API key, which tier it belongs to, and its current health (a repeatedly blocked engine is benched for a while). Use it to pick explicit engines for web_search, or to diagnose an empty result list.