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paper-fetch

作者 Agents365-ai · Agents365-ai/paper-fetch

Download open-access PDFs by DOI — pulls from Unpaywall, arXiv, PMC, bioRxiv. Legal, multi-source, built for research workflows.

Give it a DOI or citation; it finds a legally free version (preprint, PMC, institutional open access) and downloads the PDF. Falls back across Unpaywall, arXiv, PMC, and bioRxiv. No paywall bypass, no piracy — just making existing open-access options easier.

▶ 观看演示 📦 安装 💡 使用场景

为什么要用

核心特性

实时演示

实际使用效果

paper-fetch-skill.replay ▶ 就绪
0/0

安装

作者仓库 · Claude Skills 官方文档

使用场景

实战用法： paper-fetch

Pull all PDFs for a literature review reading list

👤 Researchers, grad students, science writers ⏱ ~15 min beginner

何时使用： You have 40 DOIs from a literature search and want to skim them without 40 browser clicks.

步骤
  1. Hand over the list
    Use paper-fetch. Here are 40 DOIs. Download the OA version of each to ~/papers/lit-review/.✓ 已复制
    → Progress per DOI; summary of found/unfound
  2. Handle misses
    For ones not found, tell me what's available (abstract-only? preprint missing?).✓ 已复制
    → Status per miss
  3. Index the results
    Make an index.md with title, year, and file path per downloaded paper.✓ 已复制
    → Browsable index

结果： A local folder of PDFs you can actually search.

注意事项
  • Some papers aren't legally OA anywhere — Skill reports the gap; request via your library's ILL for those
搭配使用： filesystem

Chase citations one hop at a time

👤 Deep researchers following reference chains ⏱ ~20 min intermediate

何时使用： You found a good paper and want the most-cited works it references.

步骤
  1. Start with the seed
    Use paper-fetch. Download this paper [DOI] and list its top-10 most-cited references.✓ 已复制
    → Paper downloaded; referenced DOIs listed
  2. Fetch the next ring
    Download those 10 too.✓ 已复制
    → Batch download

结果： A mini research trail in your file system.

搭配使用： arxiv

组合

与其他 MCP 搭配，撬动十倍杠杆

paper-fetch-skill + arxiv

Prefer arXiv for preprints, fall back to Unpaywall for journal OA

Prefer arXiv preprints when present; otherwise use Unpaywall.✓ 已复制
paper-fetch-skill + filesystem

Organized local library

Save to ~/papers/<year>/<first-author>/✓ 已复制
paper-fetch-skill + infinite-gratitude-skill

Multi-agent research with real PDFs

Dojo explorer uses paper-fetch to ground claims in actual papers.✓ 已复制

工具

此 MCP 暴露的能力

工具输入参数何时调用成本
fetch_by_doi DOI Per paper 1-3 API lookups
batch_fetch DOI list Lit reviews N * lookups
resolve_citation free-text citation Starting from citation text Crossref + Unpaywall

成本与限制

运行它的成本

API 配额
Unpaywall 100k/day (with email); arXiv and PMC are generous
每次调用 Token 数
Low
费用
Free
提示
Batch DOIs; respect rate limits to avoid being blocked.

安全

权限、密钥、影响范围

凭据存储： Unpaywall email (not a secret) in env var
数据出站： Unpaywall, arXiv, PMC, bioRxiv APIs only

故障排查

常见错误与修复

PDF not found for a DOI you know is OA

Unpaywall occasionally lags; check oadoi.org directly or wait a day

验证： curl https://api.unpaywall.org/v2/<DOI>[email protected]
Rate limited

Space batches out; use the skill's rate-limit-aware batch mode

Wrong PDF downloaded (supplementary instead of main)

Some sources return supplements; rerun with prefer-main flag

替代方案

paper-fetch 对比其他方案

替代方案何时用它替代权衡
arxiv MCPYou only need arXiv, nothing elseNarrower scope
Manual browser + ZoteroSmall reading listsTedious at scale

更多

资源

📖 阅读 GitHub 上的官方 README

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