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.
npx skills add Aperivue/medsci-skills --skill search-litgit clone --depth 1 https://github.com/Aperivue/medsci-skillsWrote 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.
[](https://agentmods.dev/skills/aperivue/medsci-skills/search-lit)<a href="https://agentmods.dev/skills/aperivue/medsci-skills/search-lit"><img src="https://agentmods.dev/badge/skills/aperivue/medsci-skills/search-lit/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.
<a href="https://agentmods.dev/skills/aperivue/medsci-skills/search-lit"><img src="https://agentmods.dev/badge/skills/aperivue/medsci-skills/search-lit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, 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 40 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.
- medium Data Exfiltration · line 248 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.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00052 | $0.06124 |
| Opus 5 | $0.00026 | $0.03062 |
| Sonnet 5 | $0.00010 | $0.01225 |
| Haiku 4.5 | $0.00005 | $0.00612 |
Grade A, and why
search-lit 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 6d 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.
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.
How it starts
The opening of the file, as written. The whole thing — 515 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Literature Search Skill
You are assisting a medical researcher with literature searches and citation management for medical research papers. Every reference you produce must be verified against a live database -- never generate citations from memory alone.
Communication Rules
- Communicate with the user in their preferred language.
- All citation content (titles, abstracts, BibTeX) in English.
- Medical terminology is always in English.
Key Directories
- BibTeX output: User-specified directory (default: current working directory)
- Manuscript workspace: determined by the user or the calling skill
Search Tools: MCP (Primary) + E-utilities (Fallback)
Primary: MCP Tools (Claude.ai Remote)
| Database | MCP Tool | Purpose |
|---|---|---|
| PubMed | mcp__claude_ai_PubMed__search_articles |
Search by query, MeSH terms |
| PubMed | mcp__claude_ai_PubMed__get_article_metadata |
Full metadata for a PMID |
| PubMed | mcp__claude_ai_PubMed__find_related_articles |
Related articles for a PMID |
| PubMed | mcp__claude_ai_PubMed__lookup_article_by_citation |
Verify a citation |
| PubMed | mcp__claude_ai_PubMed__convert_article_ids |
Convert between PMID/DOI/PMCID |
| Semantic Scholar | mcp__claude_ai_Scholar_Gateway__semanticSearch |
Semantic search across all fields |
| bioRxiv/medRxiv | mcp__claude_ai_bioRxiv__search_preprints |
Search preprint servers |
| bioRxiv/medRxiv | mcp__claude_ai_bioRxiv__get_preprint |
Full preprint metadata |
| CrossRef | WebFetch with https://api.crossref.org/works/{DOI} |
DOI verification |
Fallback: NCBI E-utilities (Direct API via Bash)
When PubMed MCP is unavailable (session timeout, "MCP session has been terminated" error, or "No such tool available" error), fall back to NCBI E-utilities via bundled scripts.
Detection: If any mcp__claude_ai_PubMed__* call returns an error containing
"terminated", "not found", "not available", or "not connected", switch ALL subsequent
PubMed calls in this session to E-utilities. Do not retry MCP after a disconnect — it
will not recover within the same conversation.
What ships with it
18 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.
- references/parse_pubmed.py 12 KB runs code
- references/pubmed_eutils.sh 3.5 KB runs code
- references/snowball_challenge/expected/snowball.bib 1.5 KB
- references/snowball_challenge/fixture/DOI_10_0_seed1.backward.json 600 B
- references/snowball_challenge/fixture/DOI_10_0_seed1.forward.json 571 B
- references/snowball_challenge/fixture/DOI_10_0_seed1.similar.json 263 B
- references/snowball_challenge/fixture/library.bib 277 B
- references/snowball_challenge/problem.md 2.6 KB
- references/snowball_challenge/verify.sh 780 B runs code
- references/snowball.py 13 KB runs code
- scripts/check_doi_record_match_challenge/fixture/cache/10.1000%2Fmarkup.005.json 180 B
- scripts/check_doi_record_match_challenge/fixture/cache/10.1000%2Fmatch.001.json 183 B
- scripts/check_doi_record_match_challenge/fixture/cache/10.1000%2Fother.002.json 154 B
- scripts/check_doi_record_match_challenge/fixture/cache/10.1000%2Fsuppl.003.json 135 B
- scripts/check_doi_record_match_challenge/fixture/screening.tsv 615 B
- scripts/check_doi_record_match_challenge/verify.sh 4.5 KB runs code
- scripts/check_doi_record_match.py 11 KB runs code
- skill.yml 2.8 KB
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.
- 6d ago Changed · +7 lines f16110416385
- 12d ago First seen · 508 lines · 52 tokens per session scan A 7b3b355e1cf8
search-lit is a skill published in the GitHub repository Aperivue/medsci-skills (292 stars, last pushed 4d ago), licensed MIT. It adds 52 tokens to every session and 6,124 once invoked, about $0.0003 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 2026-08-30.
Other skills, from other repositories
clinical-trials-search
Search ClinicalTrials.gov with natural language queries. Find clinical trials, enrollment, and outcomes using Valyu semantic search.
shidi
A Chinese-language research assistant role that turns a user’s ideas into literature reviews, experiment plans, figures and organised data.
clinical-research
Use when designing a prospective clinical study before submission — selecting and classifying endpoints (primary / key-secondary / exploratory, with surrogate-endpoint flagging), estimating sample size and power for two-arm designs (means / proportions / survival), or scoring a study plan for feasibility and a GO /…
sr-search-record
An automated literature-review search and screening workflow using OpenAlex, an open database and API for scholarly research, and Zotero, a reference manager.
review-synthesis
A literature-review workflow that combines evidence from the full text of selected research papers into a findings document. It uses different review methods for systematic, semi-systematic, and integrative reviews.
review-draft
A workflow for expanding a first draft of a review article into a structured academic manuscript. A review article combines and organizes existing research rather than reporting a new experiment.