literature-search-biorxiv

literature-search-biorxiv is a skill for Claude Code, Codex from google-deepmind/science-skills. It costs 74 tokens per session (1,996 once invoked), scanned A, original, Apache-2.0.

A search and download tool for bioRxiv and medRxiv, online archives where scientists share research papers before formal peer review. It can retrieve paper details by DOI or browse papers by date, category, and local keyword filtering.

In plain words
What is it for?
Use it to fetch metadata for a known paper, download preprints from a narrow date range and category, or filter a selected set of papers by keywords.
Why use it?
It helps locate and retrieve biology, life-science, and medical preprints while making the archive's date and category limits explicit.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to fetch metadata for a known paper, download preprints from a narrow date range and category, or filter a selected set of papers by keywords.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/google-deepmind/science-skills/literature_search_biorxiv
About the project

Science Skills is a collection of add-ons that give AI agents structured instructions, scripts, and references for scientific research, including genomics, structural biology, cheminformatics, and literature search. Researchers use it to guide agents through specialized scientific tasks with information from databases and tools such as AlphaGenome, AFDB, and UniProt. The catalogue entries are individual skills from this collection.

google-deepmind/science-skills · 3,003 stars · on GitHub · antigravity.google

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 google-deepmind/science-skills --skill literature_search_biorxiv
Clone the repo
git clone --depth 1 https://github.com/google-deepmind/science-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 literature-search-biorxiv

README.md
[![agentmods](https://agentmods.dev/badge/skills/google-deepmind/science-skills/literature_search_biorxiv/github.svg)](https://agentmods.dev/skills/google-deepmind/science-skills/literature_search_biorxiv)
Your own site
<a href="https://agentmods.dev/skills/google-deepmind/science-skills/literature_search_biorxiv"><img src="https://agentmods.dev/badge/skills/google-deepmind/science-skills/literature_search_biorxiv/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 literature-search-biorxiv

Your own site · 80×15
<a href="https://agentmods.dev/skills/google-deepmind/science-skills/literature_search_biorxiv"><img src="https://agentmods.dev/badge/skills/google-deepmind/science-skills/literature_search_biorxiv.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,996 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 19
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
Origin original 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 $0.00074 $0.01996
Opus 5 $0.00037 $0.00998
Sonnet 5 $0.00015 $0.00399
Haiku 4.5 $0.00007 $0.00200

Measured 13d ago against content hash bb9477b5a0b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

literature-search-biorxiv 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 13d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/search_by_dates.py, scripts/search_by_doi.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.

To ensure you respect terms-of-service, do NOT write custom `curl` queries.
skills/literature_search_biorxiv/SKILL.md · 170 lines

How it starts

The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prerequisites

  1. uv: Read the uv skill and follow its Setup instructions to ensure uv is installed and on PATH.
  2. User Notification: If .licenses/literature_search_biorxiv_LICENSE.txt does not already exist in the workspace root directory then (1) prominently notify the user to check the terms at https://api.biorxiv.org/ and https://www.biorxiv.org/content/about-biorxiv and to always check the license of the papers retrieved by the skill for any restrictions, then (2) create the file recording the notification text and timestamp.

Search Strategy Guide (Read First)

This skill browses a date-based preprint archive. It is NOT a keyword search engine. Choose your approach based on what you already know:

  • A DOI (e.g., from a citation): Use search_by_doi.py. Fast and reliable.
  • Approximate date + category: Use search_by_dates.py with a 1–4 week range and --category.
  • Only a topic or keywords, no date: Do NOT use this skill for discovery. Use a keyword-capable literature skill first to find relevant DOIs, then return here to fetch metadata.

CRITICAL ANTI-PATTERN — Do NOT do this: Do NOT attempt to search broad date ranges (months or years) with --keywords hoping to find a specific paper. The bioRxiv API does not support server-side keyword search. The script must download ALL metadata for the entire date range and filter locally in Python. Broad ranges will result in thousands of API calls, timeouts, and your request being blocked for API abuse. This is the #1 reason this skill fails.

Core Rules

  • Use the Wrapper: ALWAYS execute the provided helper scripts to query the database rather than accessing the database directly. The scripts automatically enforce the required rate limit gracefully.
  • Local Filtering (CRITICAL WARNING): Unlike arXiv, the bioRxiv API does not support server-side keyword or author searches. Keyword and author filtering is performed locally by the scripts after downloading all metadata for a specified date range. You MUST use narrow date ranges (e.g., 1-4 weeks) AND the --category filter when searching with --keywords or --author.
  • Abstracts Excluded By Default: To save context space in the resulting JSON, abstracts are stripped from the output by default. If you are searching by --keywords and want to read the abstracts of the resulting papers to understand their context, you MUST pass the --include_abstracts flag.
  • Output Redirection: Search commands output JSON arrays to standard output. Always redirect output to a file (e.g., > results.json) and parse the file separately.
  • List Sources If this skill is used, ensure this is mentioned in the output AND list the URLs of all papers that were used in producing the output.

Read the full file on GitHub · 170 lines

Files

What ships with it

3 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. 13d ago First seen · 170 lines · 74 tokens per session scan A bb9477b5a0b8

Subscribe to this mod's changes

literature-search-biorxiv is a skill published in the GitHub repository google-deepmind/science-skills (3,003 stars, last pushed 4d ago), licensed Apache-2.0. It adds 74 tokens to every session and 1,996 once invoked, about $0.0004 per session on Opus 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 2026-08-30.

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