dsh-lit-fetch
Fetch academic papers by DOI or keyword: Crossref and OpenAlex search, batch PDF download through eight Sci-Hub mirrors with an Unpaywall open-access fallback, PDF magic-byte validation, bounded concurrency, and a clickable batch-access HTML manifest for papers that could not be downloaded.
Install
dsh plugin --profile web add dsh-lit-fetch
Sandbox test results
| Stage | Result |
|---|---|
| 1 install | ✓ |
| 2 list | ✓ |
| 3 mount | ✓ |
| 4 boot | — |
Four stages run in an isolated sandbox: install (network on) → list → mount → boot (last three with no network).
README
dsh-lit-fetch
DSH literature fetcher — search academic papers, download PDFs by DOI (Sci-Hub mirrors with Open Access fallback), and generate a batch-access HTML manifest.
DSH 文献获取插件 — 快捷搜索学术文献、通过 DOI 批量下载 PDF(Sci-Hub 镜像 + 开放获取兜底)、生成批量获取清单 HTML。
这不是网页正文抓取工具。 插件不解析网页正文、不做 readability/HTML 转文本,只做三件事:
检索文献元数据、下载 PDF 文件、生成可点击的获取清单。
This is not a web-page text extractor. No readability/HTML-to-text; only metadata search, PDF download, and manifest generation.
功能总览 · At a glance(中英对照 / Bilingual)
检索 / Search
中文 · English
search_papers:按 DOI 精确查询(Crossref works/{doi}) · search_papers: exact DOI lookup via Crossref
按标题/关键词检索(OpenAlex works?search=,默认 5 条、最多 20 条) · Title/keyword search via OpenAlex (default 5, max 20)
返回标题、作者、期刊、年份、DOI、官方链接 · Returns title, authors, journal, year, DOI and canonical link
DOI 判定规则:形如 10.xxxx/...(正则 ^\d+\.\d+\//)才走 Crossref,否则走 OpenAlex · DOI detection: matches ^\d+\.\d+\//, otherwise OpenAlex
单次请求超时 15 秒;Crossref 失败自动降级为 OpenAlex 关键词检索 · 15 s per-request timeout; Crossref miss falls through to OpenAlex
下载 / Download
中文 · English
download_papers:按 DOI 批量下载 PDF · download_papers: batch PDF download by DOI
Sci-Hub 优先:遍历 8 个镜像域名,用正则解析页面里的 iframe/embed 取 PDF 直链 · Sci-Hub first: walks 8 mirrors, resolves the PDF link from iframe/embed
开放获取兜底:Unpaywall 查 OA 免费版本 · OA fallback: Unpaywall lookup for a free version
PDF 魔数校验(前 5 字节必须是 %PDF-)+ 最小体积校验(<3000 字节拒收) · Magic-byte check (first 5 bytes %PDF-) and minimum size (reject <3000 bytes)
并发下载(默认 4,上限 8,下限 1) · Concurrent downloads (default 4, clamped to 1–8)
落盘方式:全量读入内存 → 先写 <文件名>.pdf.part → rename 原子改名(非流式) · Write path: buffer the whole response in memory → write <name>.pdf.part → rename (not streaming)
文件名:<两位序号>_<清洗后标题>.pdf,标题去除 \ / : ? " < > · 与换行制表符,截断至 120 字符 · Filename: <2-digit idx>_<cleaned title>.pdf, strips \ / : ? " < > · and CR/LF/tab, capped at 120 chars
每篇返回状态:ok / scihub-fail / oa-fail / closed-access / no-doi · Per-paper status: ok / scihub-fail / oa-fail / closed-access / no-doi
结果写入输出目录的 _lit_fetch_report.json(内容是结果数组,不是汇总对象) · Writes _lit_fetch_report.json (a results array, not a summary object)
⚠️ Sci-Hub 失败但 OA 成功时,同一篇会留下两条记录(scihub-fail + ok),故 results.length 可能大于论文篇数,summary.failed 按记录条数算而非按篇数算 · ⚠️ When Sci-Hub fails but the OA fallback succeeds, two records are pushed per paper (scihub-fail + ok); results.length can exceed the paper count and summary.failed counts records, not papers
清单 / Manifest
中文 · English
generate_manifest:把拿不到的文献生成可点击清单 · generate_manifest: clickable list of papers that could not be fetched
输出 批量获取入口.html(文件名可改),页面语言固定为中文 · Emits 批量获取入口.html (filename overridable); page is Chinese-only
每行含序号、标题(链到 https://doi.org/<DOI>)、第一作者、年份、期刊、状态徽章、下载PDF 按钮 · Each row: index, title (linked to https://doi.org/<DOI>), first author, year, journal, status badge, download button
提供「顺序打开全部」按钮,逐条间隔 800 ms 打开 · An "open all in order" button opens each link 800 ms apart
宿主路由 / Host route
中文 · English
注册 /lit-fetch 前缀路由,返回 {status, plugin, version} JSON · Registers a /lit-fetch prefix route returning {status, plugin, version} JSON
version 直接读 package.json(PKG_VERSION),不会与包版本漂移 · version is read from package.json at load (PKG_VERSION), so it never drifts
⚠️ 状态枚举的差异(重要) · Status enum mismatch (important)
两个工具的状态词汇表不一致,混用会让清单显示错误:
来源 · 状态值
download_papers 实际产出 · ok · scihub-fail · oa-fail · closed-access · no-doi
generate_manifest 认识的状态 · ok(渲染为绿色「✓已下载」)· failed(渲染为橙色「✗需手动」)
其余一切取值(含 scihub-fail / oa-fail / closed-access / no-doi / pending) · 渲染为灰色「—」,既不算已下载也不算需手动
也就是说:把 download_papers 的结果数组原样喂给 generate_manifest,只有 ok 会显示成「✓已下载」,其余全部落到灰色「—」,
不会显示成「✗需手动」。若希望失败项显示为橙色「✗需手动」,需要先把非 ok 状态映射成 failed 再传入。
generate_manifestonly recognisesokandfailed. Every other value — including the four
failure statuses actually produced by download_papers — renders as a neutral grey dash.
Map non-okstatuses tofailedyourself if you want the "needs manual retrieval" badge.
使用方式 · Usage
在 DSH 对话中对 agent 说 / Talk to the agent in a DSH session:
1. 搜索 · Search:「帮我找关于 static mixer CFD 的文献」→ agent 调用 search_papers
2. 下载 · Download:「把这些 DOI 下载到 D:\papers\」→ agent 调用 download_papers
3. 生成清单 · Manifest:「给没下载到的文献生成获取清单」→ agent 调用 generate_manifest
下载策略 · Download strategy
1. Sci-Hub 优先:依次遍历 8 个域名(sci-hub.ren / ee / st / ru / se / wf / hk、tesble.com),
请求 域名 + DOI 页面(超时 25 秒),用 <(?:iframe|embed)[^>]*src="..."> 正则解析出 PDF 直链
(// 开头补 https:、/ 开头拼域名),再把整个 PDF 完整下载到内存、校验 %PDF- 魔数与体积,
通过后写 .part 再原子 rename。任一步失败就换下一个域名继续。
2. 开放获取兜底:Sci-Hub 全部失败(或直链下载校验不过)时查 Unpaywall,
优先 best_oa_location,其次遍历 oa_locations(取 url_for_pdf,退化为 url),
命中后走同一套下载与校验流程。
3. 最终兜底:两者均失败 → 状态标为 closed-access / scihub-fail / oa-fail,
用 generate_manifest 生成 HTML 供手动获取(DOI 官方入口 / 向作者索取 / NSTL 文献传递)。
Sci-Hub first — walks the 8 mirrors, resolves the direct PDF link from iframe/embed.
OA fallback — Unpaywall when Sci-Hub has nothing. Final fallback — the HTML manifest.
已知限制 · Known limitations
- Sci-Hub 2021 年后基本停止收录新文献(Elsevier/Wiley/ACS 2021+ 文章大概率无收录)。
- 直连 Sci-Hub 镜像较慢(Cloudflare 限速),建议开启 VPN/代理后使用。
- OA 兜底仅查 Unpaywall;某些文献有 arXiv 预印本但 Unpaywall 未收录。
- 实现说明(非功能):PDF 是一次性
arrayBuffer()全量读入内存再落盘的,没有流式写入、没有断点续传,
也没有下载进度;Content-Length 虽然被读进局部变量,但未参与任何判断或输出(无进度/无大小预检)。
- Sci-Hub stopped indexing new papers after 2021, and mirror throughput is often throttled.
The OA fallback only consults Unpaywall. Downloads are fully buffered in memory — no
streaming, no resume, no progress reporting.
安装 · Installation
dsh plugin --p …(truncated)
Rendered from the README published on npm. Formatted only, not edited.
Versions
Published on npm::7,最后更新 2026-10-19