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paper-fetch

paper-fetch is a skill for Claude Code, Codex from blkst8/skills. It costs 162 tokens per session (5,848 once invoked), scanned A, original, no licence file.

A tool for finding or obtaining a research paper's PDF from a DOI, arXiv identifier, title, citation, or list of DOIs. arXiv is a public repository for research papers, while bioRxiv is a repository for biology papers shared before formal publication.

In plain words
What is it for?
Use it to fetch papers from citations, find PDFs by DOI or title, and obtain open-access versions from sources such as arXiv or bioRxiv.
Why use it?
It removes the need to search several paper websites manually when you need the paper itself. It is aimed at locating an available or open-access copy from citation information.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

not rated 6repo 14d ago A scan 162 tokens no licence

Good fit Use it to fetch papers from citations, find PDFs by DOI or title, and obtain open-access versions from sources such as arXiv or bioRxiv.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/blkst8/skills/paper-fetch
View source ↗ blkst8/skills
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add blkst8/skills --skill paper-fetch
Clone the repo
git clone --depth 1 https://github.com/blkst8/skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for paper-fetch

README.md
[![agentmods](https://agentmods.dev/badge/skills/blkst8/skills/paper-fetch/github.svg)](https://agentmods.dev/skills/blkst8/skills/paper-fetch)
Your own site
<a href="https://agentmods.dev/skills/blkst8/skills/paper-fetch"><img src="https://agentmods.dev/badge/skills/blkst8/skills/paper-fetch/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for paper-fetch

Your own site · 80×15
<a href="https://agentmods.dev/skills/blkst8/skills/paper-fetch"><img src="https://agentmods.dev/badge/skills/blkst8/skills/paper-fetch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 162 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,848 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00162 $0.05848
Opus 5.5 $0.00065 $0.02339
Sonnet 5.5 $0.00032 $0.01170
Haiku 4.5 $0.00016 $0.00585

Measured 14d ago against content hash c3b4b1c4ebe5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

paper-fetch scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 14d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/cloak_pdf.py, scripts/fetch.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

Some publishers (e.g. `science.org`) sit behind Cloudflare, which answers a plain HTTP client with a `403`/`429` or a "Just a moment…" JS-challenge page instead of the PDF — so the default `urllib` download can't get thr
.agents/paper-fetch/SKILL.md · 325 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 14d ago First seen · 325 lines · 162 tokens per session scan A c3b4b1c4ebe5

Subscribe to this mod's changes

paper-fetch is a skill published in the GitHub repository blkst8/skills (6 stars, last pushed 14d ago), with no licence file. It adds 162 tokens to every session and 5,848 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-24.

DocumentsPDFResearch
Related

paper-fetch compared with skills from other repositories

paper-fetch next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
paper-fetchblkst8/skillsSkill614d agononeA162Claude Code, Codex
apify-youtube-transcript-scrapersickn33/agentic-awesome-skillsSkill49ktodayMITA48Claude Code
foundry-hosted-agent-validationmicrosoft/agent-frameworkSkill15kyesterdayMITA82Claude Code, Codex
skill-doc-deliverynyldn/claude-octopusSkill4.4ktodayMITA29Claude Code
meta-web-to-pdf-briefingopensquilla/opensquillaSkill7.1k6d agoApache-2.0A45Claude Code, Codex
paper-readerhuangkiki/dailypaper-skillsSkill1.3k5d agoApache-2.0A135Claude Code, Codex
chat-complex-documentsvellum-ai/vellum-assistantSkill1.5k2d agoMITA90Claude Code, Codex