polars-dovmed

polars-dovmed is a skill for Claude Code, Codex from fmschulz/omics-skills. It costs 42 tokens per session (4,640 once invoked), scanned A, original, MIT.

A literature-search workflow for querying PubMed Central Open Access and bioRxiv. PubMed Central is a free archive of research papers, while bioRxiv is a repository for biology papers shared before peer review.

In plain words
What is it for?
It helps search biomedical and biology literature, run asynchronous discovery queries, use local corpus files, and record the corpus revision used.
Why use it?
It makes searches reproducible by using structured queries, hosted APIs, or local Parquet indexes instead of ad-hoc browsing.

Skill for Claude CodeCodex

Written for Claude Code and Codex: user-invocable in frontmatter, but also agents/openai.yaml present.

Part of the omics-skills plugin — 34 skills, 4 agents shipped together

Good fit It helps search biomedical and biology literature, run asynchronous discovery queries, use local corpus files, and record the corpus revision used.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fmschulz/omics-skills/polars-dovmed
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 fmschulz/omics-skills --skill polars-dovmed
Clone the repo
git clone --depth 1 https://github.com/fmschulz/omics-skills

Made for: Claude Code, Codex.

Or install omics-skills, the plugin that ships this one along with the rest of its 34 skills, 4 agents.

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 polars-dovmed

README.md
[![agentmods](https://agentmods.dev/badge/skills/fmschulz/omics-skills/polars-dovmed/github.svg)](https://agentmods.dev/skills/fmschulz/omics-skills/polars-dovmed)
Your own site
<a href="https://agentmods.dev/skills/fmschulz/omics-skills/polars-dovmed"><img src="https://agentmods.dev/badge/skills/fmschulz/omics-skills/polars-dovmed/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 polars-dovmed

Your own site · 80×15
<a href="https://agentmods.dev/skills/fmschulz/omics-skills/polars-dovmed"><img src="https://agentmods.dev/badge/skills/fmschulz/omics-skills/polars-dovmed.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,640 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 75
    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 $0.00042 $0.04640
Opus 5 $0.00021 $0.02320
Sonnet 5 $0.00008 $0.00928
Haiku 4.5 $0.00004 $0.00464

Measured 11d ago against content hash c2c813ce136b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

polars-dovmed 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 11d ago.

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

curl -sS --max-time 20 https://api.newlineages.com/
skills/polars-dovmed/SKILL.md · 352 lines

How it starts

The opening of the file, as written. The whole thing — 352 lines — stays where its author put it; the contents beside it link to each section on GitHub.

polars-dovmed

Search PubMed Central Open Access and bioRxiv parquet corpora with polars-dovmed.

Use the bundled helper, skills/polars-dovmed/scripts/query_literature.py, for hosted API or local parquet-backed searches. The helper auto-loads ~/.config/polars-dovmed/.env.

Run the helper with uv run --script so its pinned Parquet fallback dependency is available. Local runs record --corpus-revision (or DOVMED_CORPUS_REVISION) and fall back from flattened.csv to processed.parquet or the legacy prcoessed.parquet only when the compact output is absent.

Current hosted API defaults:

  • Treat API keys as secrets in artifacts. Do not save keys in run directories, memory records, summaries, or final answers.
  • Save generated run artifacts under tasks/polars-dovmed-runs/<slug>/ by default, not under skills/polars-dovmed/.
  • Prefer structured async search through /api/jobs targeting scan_literature_advanced(mode="discovery").
  • Do not use the flat /api/search_literature endpoint for smoke tests or normal skill work. It is opt-in only with --allow-flat-query and may hang behind the edge proxy.
  • Do not start with --corpus both. Run --corpus biorxiv and --corpus pmc as separate calls, then merge results.
  • For OpenPMC/PMC, do not run a broad unbanded scan. Use the materialized clean year bands in parallel with direct FTS-backed calls: --sync --year-bands clean_split --year-band-workers 4.
  • If the user names a specific publication year or narrow range, map it to the matching clean band(s) and search only those bands. Use all clean bands only when no year constraint is given.
  • For recent or emerging taxa, run bioRxiv anchor-only discovery and OpenPMC clean-band discovery as separate searches. bioRxiv is small and often returns first; OpenPMC should still use parallel clean bands.
  • For any entity-centric prompt with topic modifiers, such as "distribution and genomics of X", first search the exact entity/aliases only. Treat topic words as triage labels or a second-pass refinement after confirming anchor hits; do not build a large first-pass query of generic topic terms.
  • Do not invent aliases by splitting compact taxon, gene, or clade names into common words unless the prompt or literature supports that synonym. Keep aliases evidence-based; when a real synonym is multi-word, keep it as one phrase in a single JSON term.
  • For OpenPMC clean-band discovery, skip automatic details rerank: pass --skip-details-rerank. The FTS index searches title, abstract, and full text, but PMC details lookups still read parquet and can dominate wall time. Fetch details only for selected PMCID values after discovery.
  • Citation metadata should come from the corpus response/details endpoint first. If DOI/year/journal are missing, use bounded Crossref lookup through --crossref-metadata or the crossref-lookup skill. Do not use generic web search for DOI repair except as a final publisher-page check for unresolved/ambiguous records.
  • If OpenPMC clean-band search returns Database not found, stop and report that the deployment is not exposing the indexed OpenPMC bands. Do not fall back to a monolithic unbanded OpenPMC scan.
  • For interactive work, pass --poll-timeout and, when available, wrap searches in timeout. Do not rerun OpenPMC with longer waits after one bounded clean-band failure.

Public access note:

  • omics-skills does not provide a hosted API key or the PMC/bioRxiv parquet corpora.
  • Public users can prepare local PMC searches from Uri Neri's upstream package: https://github.com/UriNeri/polars-dovmed.
  • Local setup uses upstream dovmed download, dovmed build-parquet, and dovmed scan.
  • If no API key and no local corpus exist, state that polars-dovmed is not configured and use another literature fallback.

Read the full file on GitHub · 352 lines

Files

What ships with it

5 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. 11d ago First seen · 352 lines · 42 tokens per session scan A c2c813ce136b

Subscribe to this mod's changes

polars-dovmed is a skill published in the GitHub repository fmschulz/omics-skills (7 stars, last pushed 5d ago), licensed MIT. It adds 42 tokens to every session and 4,640 once invoked, about $0.0002 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 2026-08-31.

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