npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

pi-literature

v0.1.0

Published

Biomedical literature discovery skills for Pi: PubMed, PMC Open Access, bioRxiv, and medRxiv.

Readme

Pi Life Sciences Literature

pi-literature is a Pi package mirroring the focused Life Sciences Literature Codex plugin. It provides three on-demand skills:

  • biorxiv-skill — compact bioRxiv and medRxiv metadata and publication linkage
  • ncbi-entrez-skill — PubMed search, summaries, fetches, and PubMed-to-PubMed links
  • ncbi-pmc-skill — PMC Article Dataset Open Access, license, retraction, and file metadata

The package uses Node's built-in fetch (Node 18.17 or newer), so installation does not require Python or third-party runtime packages. Each skill reads one JSON object from stdin and writes one JSON object to stdout. Raw upstream bytes are saved unchanged when save_raw is requested.

Install

From this checkout:

pi install .

From npm after publishing:

pi install npm:pi-literature

Pi discovers the skills from the package's pi.skills manifest. They can also be invoked explicitly as /skill:biorxiv-skill, /skill:ncbi-entrez-skill, or /skill:ncbi-pmc-skill.

Development

npm test
npm run validate

The source-presentation contract keeps provenance evidence separate from checked-only connectivity/metadata responses, emits deterministic canonical links for supported DOI/PMID/PMCID identifiers, redacts private query values, and never rewrites requested raw HTTP bytes.

Security

The skills call public biomedical APIs and execute local helper scripts. Review the package before installing it, as Pi packages and skills run with the permissions of the Pi process.