Lookout

io.github.SylphxAI由 GitHub 帳號 SylphxAI 發布v0.3.3更新於 Oct 24, 2026

Lookout — web answers with source-level proof. Search and fetch citeable excerpts, no API key.

已驗證STDIO僅桌面網頁搜尋與抓取知識與記憶

概覽

AI 產生的概覽

Lookout 是本地 MCP 伺服器，讓助理不需 API 金鑰即可搜尋網頁、抓取與擷取內容，回傳可引用的摘錄，並在抓取失敗時明確回報。

可以做什麼
透過四個免金鑰的公開轉接器（DuckDuckGo HTML、Wikipedia OpenSearch、npm registry、Hacker News Algolia）搜尋網頁，回傳排序後的結果並標明所用轉接器。抓取單一 URL，具備 SSRF 檢查、重新導向與大小上限，回傳內文前段片段，並對遭封鎖位址、非 200 回應、截斷與空擷取提出警告或錯誤。從 HTML 或 URL 擷取標題、中繼資料、表格與片段。執行有界限的同源爬取，或執行具名的多步驟研究工具，先搜尋再抓取並擷取排名前面的頁面（預設 3 個，最多 6 個）。逐字比較兩段文字或兩個 URL，並查詢或管理磁碟快取。
適用情境
適合希望助理根據實際開啟的頁面作答、而非轉述搜尋摘要的情境，也適合希望把失敗如實回報為缺口、而非給出自信總結的情況。適用於研究、事實查核與閱讀公開網頁，且不需註冊搜尋 API。
執行需求
透過 stdio 在本機執行，通常以 npx 從 npm 套件啟動，因此需要 Node.js 與網路存取。不需 API 金鑰，未宣告環境變數或請求標頭。首次搜尋仍需連網；之後的搜尋與抓取可能由磁碟快取提供。
安裝前請注意
抓取與爬取會向第三方網站送出請求，搜尋查詢會送往四個公開轉接器。抓取預設不遵守 robots.txt，除非設定 respectRobots；爬取則預設遵守，除非關閉。搜尋與抓取預設啟用快取，命中快取時會從磁碟重播先前的回應。README 說明此儲存庫已封存並合併至另一工具，使用前請確認維護狀態。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 Lookout，將其新增到工作區。
  2. 為需要使用其工具的對話啟用該服務。

Desktop only，透過 STDIO。 STDIO 服務會啟動本機處理程序，因此需要 SourceWeft 桌面主機。

其他 MCP 客戶端

參照 儲存庫 中的啟動說明。

README

Merged into anymd (2026-09-25). anymd reads PDFs, Office files, EPUB, web pages, images and video into clean Markdown for AI agents: npx -y @sylphx/anymd. This repository is archived.

[Lookout]

Lookout

Web answers with source-level proof.

Search and fetch citeable excerpts. No API key. Hits name the adapter. Fetches keep a span, warnings, and gaps. Multi-step research is a separate tool.

[npm] [license]

npm @sylphx/lookout · bin lookout · MCP io.github.SylphxAI/lookout

The problem

A search snippet is a title and a URL. The agent then paraphrases a page it never opened. When the body is missing, a confident summary is worse than a gap.

The difference

A snippet saysLookout returns
“Release notes” and a URLtitle, description, excerpt span, and any table rows it could read
nothing when the fetch failsa warning or an error: blocked address, HTTP status, truncation, empty extract

Fetch reads the HTTP response. It does not run JavaScript, and it does not write a model summary.

Search, then open the page

bash
npx -y @sylphx/lookout search "Model Context Protocol"npx -y @sylphx/lookout fetch https://example.comnpx -y @sylphx/lookout extract https://example.com

search queries DuckDuckGo HTML, Wikipedia OpenSearch, the npm registry, and Hacker News Algolia, then ranks the hits. It does not fetch those pages and it does not run web_research.

Install

bash
npx -y @sylphx/lookout

That starts a stdio MCP server. No API key.

Your clientSetup
Any agent / CLInpx -y @sylphx/lookout
Claude Codeclaude mcp add lookout -- npx -y @sylphx/lookout
Claude Desktop / Cursor / VS Code / Codex"command": "npx", "args": ["-y", "@sylphx/lookout"]
json
{  "mcpServers": {    "lookout": { "command": "npx", "args": ["-y", "@sylphx/lookout"] }  }}

Tools

ToolWhen to call it
web_searchRanked hits from the four public adapters. No API key.
web_fetchOne URL. SSRF checks, redirect cap, size cap, body-prefix span.
web_extractTitle, metadata, tables, and spans from HTML or a URL.
web_cacheQuery or manage the on-disk cache. Not a web search.
web_crawlBounded same-origin crawl. Not the search default.
web_researchNamed multi-step tool: search, then fetch and extract the top pages (default 3, max 6).
web_diffAdded and removed words between two texts or two URLs.

There is no profile switch. The tool you name is the work that runs. Cache is on for search and fetch unless you pass useCache: false. A cache hit replays an earlier response from disk. The first search still needs the network.

Reference: tools · defaults

What it will not pretend

  • Private, loopback, and link-local addresses are rejected.
  • A failed adapter, a non-200 response, a truncated body, or an empty extract is reported. It is not turned into a clean answer.
  • web_fetch does not honor robots.txt unless you set respectRobots: true. web_crawl honors it unless you turn that off.
  • Lookout does not render a browser and does not synthesize an answer.

Companion MCP tools

ProductJob
CitraPDF answers with page-level proof
IrisImage facts and pixel evidence
CueVideo timelines and timestamp evidence
SpineRepository architecture and impact
LocusExact code-chunk retrieval

Each product is independent. Install only the tools your agent needs.

Documentation

Websitesylphxai.github.io/lookout
QuickstartInstall and first call
CompareFirecrawl, Tavily, and what Lookout actually does

Development

bash
bun installbun testbun run doctorbun run docs:build

License

MIT

來源：README.md，提交 87ae52c

工具

0
SourceWeft 尚未在沙箱中啟動過該軟體包，因此其工具未知。

版本歷史

3
  1. v0.3.3最新Sep 23, 2026
  2. v0.3.2Sep 23, 2026
  3. v0.3.1Sep 23, 2026

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