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paper-fetch

автор 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.

Зачем использовать

Ключевые функции

Живое демо

Как выглядит на практике

paper-fetch-skill.replay ▶ готово
0/0

Установка

Репозиторий автора · Официальная документация Claude Skills

Сценарии использования

Реальные сценарии: paper-fetch

Pull all PDFs for a literature review reading list

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

Когда использовать: You have 40 DOIs from a literature search and want to skim them without 40 browser clicks.

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

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

Подводные камни
  • Some papers aren't legally OA anywhere — Skill reports the gap; request via your library's ILL for those
Сочетать с: filesystem

Chase citations one hop at a time

👤 Deep researchers following reference chains ⏱ ~20 min intermediate

Когда использовать: You found a good paper and want the most-cited works it references.

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

Итог: A mini research trail in your file system.

Сочетать с: arxiv

Комбинации

Сочетайте с другими MCP — эффект x10

paper-fetch-skill + arxiv

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

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

Organized local library

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

Multi-agent research with real PDFs

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

Инструменты

Что предоставляет этот MCP

ИнструментВходные данныеКогда вызыватьСтоимость
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

Стоимость и лимиты

Во что обходится

Квота API
Unpaywall 100k/day (with email); arXiv and PMC are generous
Токенов на вызов
Low
Деньги
Free
Совет
Batch DOIs; respect rate limits to avoid being blocked.

Безопасность

Права, секреты, радиус поражения

Хранение учётных данных: Unpaywall email (not a secret) in env var
Исходящий трафик: Unpaywall, arXiv, PMC, bioRxiv APIs only

Устранение неполадок

Частые ошибки и исправления

PDF not found for a DOI you know is OA

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

Проверить: 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

Альтернативы

paper-fetch в сравнении

АльтернативаКогда использоватьКомпромисс
arxiv MCPYou only need arXiv, nothing elseNarrower scope
Manual browser + ZoteroSmall reading listsTedious at scale

Ещё

Ресурсы

📖 Читать официальный README на GitHub

🐙 Открытые задачи

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