nature-academic-search

nature-academic-search is a skill for Claude Code, Codex from LiHongwei-cn/lihongwei-cn. It costs 74 tokens per session (1,274 once invoked), scanned A, original, MIT.

A literature-search and reference-management workflow using sources such as PubMed, Crossref, arXiv, Google Scholar, and Semantic Scholar. PubMed indexes biomedical research, while arXiv and bioRxiv provide research preprints—papers shared before formal journal review.

In plain words
What is it for?
Use it to search biomedical and cross-disciplinary research, including clinical studies and preprints. It can fetch paper details, find related articles, verify citations, format references, and convert NBIB, RIS, and BibTeX files.
Why use it?
It brings searching, checking citations, finding related papers, and converting reference files into one workflow. This reduces the need to repeat the same research and citation tasks across separate tools.

Skill for Claude CodeCodex

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

Good fit Use it to search biomedical and cross-disciplinary research, including clinical studies and preprints. It can fetch paper details, find related articles, verify citations, format references, and convert NBIB, RIS, and BibTeX files.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lihongwei-cn/lihongwei-cn/nature-academic-search
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 LiHongwei-cn/lihongwei-cn --skill nature-academic-search
Clone the repo
git clone --depth 1 https://github.com/LiHongwei-cn/lihongwei-cn

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 nature-academic-search

README.md
[![agentmods](https://agentmods.dev/badge/skills/lihongwei-cn/lihongwei-cn/nature-academic-search/github.svg)](https://agentmods.dev/skills/lihongwei-cn/lihongwei-cn/nature-academic-search)
Your own site
<a href="https://agentmods.dev/skills/lihongwei-cn/lihongwei-cn/nature-academic-search"><img src="https://agentmods.dev/badge/skills/lihongwei-cn/lihongwei-cn/nature-academic-search/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 nature-academic-search

Your own site · 80×15
<a href="https://agentmods.dev/skills/lihongwei-cn/lihongwei-cn/nature-academic-search"><img src="https://agentmods.dev/badge/skills/lihongwei-cn/lihongwei-cn/nature-academic-search.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 1,274 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.01274
Opus 5 $0.00037 $0.00637
Sonnet 5 $0.00015 $0.00255
Haiku 4.5 $0.00007 $0.00127

Measured 12d ago against content hash d15b0e2420fd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

nature-academic-search scanned grade A with 0 findings 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 12d ago.

The scan reads SKILL.md. This mod also ships 15 executable files (install.sh, mcp-server/academic_search_server.py, mcp-server/sources/__init__.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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

global-specs/skills/nature-academic-search/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Multi-source literature search, citation verification, citation format conversion, and reference management via MCP tools.

MCP Tools

Core Search

Tool Source Best For
pubmed_search_articles PubMed MCP Biomedical, MeSH, clinical trials
search_crossref paper-search MCP Cross-disciplinary, citation counts
search_arxiv paper-search MCP Preprints (physics, math, CS, biology)

Extended Search

Tool Source Best For
search_google_scholar paper-search MCP Broad academic search (scraped)
search_semantic_scholar paper-search MCP Citation graph, field-of-study filters
search_biorxiv paper-search MCP Biology preprints
search_medrxiv paper-search MCP Medical preprints
search_webofscience paper-search MCP Curated index, citation reports
search_scopus paper-search MCP Broad scholarly database

PubMed Utilities

Tool Purpose
pubmed_fetch_articles Full metadata by PMID
pubmed_find_related Related article discovery
pubmed_format_citations APA / MLA / BibTeX / RIS formatting
pubmed_convert_ids DOI ↔ PMID ↔ PMCID conversion
pubmed_lookup_mesh MeSH term exploration and hierarchy
pubmed_lookup_citation Bibliographic citation → PMID lookup

Source Routing

See Source Tiers & Reliability for the complete reliability classification and fallback routing rules. The T1→T2→T3 fallback chain is the standard execution order across all workflows.

Quick guide:

User need Primary (T1) Secondary (T2) Last Resort (T3)
Medical / clinical PubMed Semantic Scholar Google Scholar
Cross-disciplinary CrossRef Semantic Scholar Scopus
Preprints / CS / physics arXiv bioRxiv / medRxiv
Exhaustive review PubMed + CrossRef + arXiv Semantic Scholar + bioRxiv/medRxiv WoS / Scopus
Citation count sensitive Semantic Scholar CrossRef
Chinese literature CNKI / 万方 (manual)

Read the full file on GitHub · 124 lines

Files

What ships with it

35 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. 12d ago First seen · 124 lines · 74 tokens per session scan A d15b0e2420fd

Subscribe to this mod's changes

nature-academic-search is a skill published in the GitHub repository LiHongwei-cn/lihongwei-cn (5 stars, last pushed 1mo ago), licensed MIT. It adds 74 tokens to every session and 1,274 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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