alphaxiv-paper

alphaxiv-paper is a skill for Claude Code, Codex from mayank-io/mstack. It costs 60 tokens per session (682 once invoked), scanned A, a copy of alphaxiv-paper-lookup, MIT.

A tool for looking up research papers through AlphaXiv, which provides structured overviews of papers from arXiv, a public repository for research manuscripts.

In plain words
What is it for?
Use it when given an arXiv or AlphaXiv link, a paper identifier, or a request to explain, summarize, or analyze a research paper.
Why use it?
It provides a machine-readable summary instead of requiring you to start by reading or parsing a raw research-paper PDF.

Skill for Claude CodeCodex

Part of the fetch plugin — 8 skills shipped together

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.

agentmods
npx agentmods add skills/mayank-io/mstack/alphaxiv-paper
Any agent
npx skills add mayank-io/mstack --skill alphaxiv-paper
Clone the repo
git clone --depth 1 https://github.com/mayank-io/mstack

Made for: Claude Code, Codex.

Or install fetch, the plugin that ships this one along with the rest of its 8 skills.

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 alphaxiv-paper

README.md
[![agentmods](https://agentmods.dev/badge/skills/mayank-io/mstack/alphaxiv-paper.svg)](https://agentmods.dev/skills/mayank-io/mstack/alphaxiv-paper)
Your own site
<a href="https://agentmods.dev/skills/mayank-io/mstack/alphaxiv-paper"><img src="https://agentmods.dev/badge/skills/mayank-io/mstack/alphaxiv-paper.svg" alt="Measured on agentmods" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 682 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin 86% copy Near-identical to another mod 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 $0.00060 $0.00682
Opus 5 $0.00030 $0.00341
Sonnet 5 $0.00012 $0.00136
Haiku 4.5 $0.00006 $0.00068

Measured 3d ago against content hash 1723024ea31c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

alphaxiv-paper 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 3d ago.

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.

curl -s "https://alphaxiv.org/overview/{PAPER_ID}.md"
Origin

This is a copy

86% identical to alphaxiv-paper-lookup — 22 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/fetch/skills/alphaxiv-paper/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AlphaXiv Paper Lookup

Look up any arxiv paper on alphaxiv.org to get a structured AI-generated overview. This is faster and more reliable than trying to read a raw PDF.

When to Use

  • User shares an arxiv URL (e.g. arxiv.org/abs/2401.12345)
  • User mentions a paper ID (e.g. 2401.12345)
  • User asks you to explain, summarize, or analyze a research paper
  • User shares an alphaxiv URL (e.g. alphaxiv.org/overview/2401.12345)

Workflow

Step 1: Extract the paper ID

Parse the paper ID from whatever the user provides:

Input Paper ID
https://arxiv.org/abs/2401.12345 2401.12345
https://arxiv.org/pdf/2401.12345 2401.12345
https://alphaxiv.org/overview/2401.12345 2401.12345
2401.12345v2 2401.12345v2
2401.12345 2401.12345

Step 2: Fetch the machine-readable report

curl -s "https://alphaxiv.org/overview/{PAPER_ID}.md"

This returns the intermediate machine-readable report — a structured, detailed analysis of the paper optimized for LLM consumption. One call, plain markdown, no JSON parsing.

If this returns 404, the report hasn't been generated for this paper yet.

Step 3: If you need more detail, fetch the full paper text

If the report doesn't contain the specific information the user is asking about (e.g. a particular equation, table, or section), fetch the full paper text:

curl -s "https://alphaxiv.org/abs/{PAPER_ID}.md"

This returns the full extracted text of the paper as markdown. Only use this as a fallback — the report is usually sufficient.

If this returns 404, the full text hasn't been processed yet. As a last resort, direct the user to the PDF at https://arxiv.org/pdf/{PAPER_ID}.

Error Handling

  • 404 on Step 2: Report not generated for this paper.
  • 404 on Step 3: Full text not yet extracted for this paper.

Read the full file on GitHub · 72 lines

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. 3d ago First seen · 72 lines · 60 tokens per session scan A 1723024ea31c

Subscribe to this mod's changes

alphaxiv-paper is a skill published in the GitHub repository mayank-io/mstack (5 stars, last pushed 9d ago), licensed MIT. It adds 60 tokens to every session and 682 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 86% identical to alphaxiv-paper-lookup, differing in 22 lines, and is treated as a copy.

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