k-dense-ai/scientific-agent-skills · skills/cellxgene-census/SKILL.md

cellxgene-census skillA

cellxgene-census is agent-read markdown (skill) from k-dense-ai/scientific-agent-skills: Query the CZ CELLxGENE Census programmatically for versioned public single-cell and spatial transcriptomics data. Use when you need population-scale cell metadata, gene expression slices, Census summary counts, source H5AD URIs/downloads, embeddings, spatial Census data, or reference atlas comparisons across organisms, tissues, diseases, assays, and cell types. For analyzing your own local single-cell data use scanpy, anndata, or scvi-tools..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add k-dense-ai/scientific-agent-skills/cellxgene-census@v1.3
Exact content
mdr add k-dense-ai/scientific-agent-skills/cellxgene-census@sha256:3e7cee2dc1416ab4

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_g2xcdhqeojgyhbn2.svg)](https://markdownregistry.com/a/art_g2xcdhqeojgyhbn2)

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Versions

versioncommittedcommitsizeaudit
v1.3 latest2026-09-02 1e5eeff 11,393 BA view · diff
v1.22026-07-26 2f2022d 10,435 BA view · diff
v1.12026-07-26 b085e11 19,132 BA view · diff
git:20260611.1b8fae32026-06-11 1b8fae3 19,137 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (11393 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

k-dense-ai/scientific-agent-skills · 43,331 stars · license MIT · pushed 2026-09-02 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_g2xcdhqeojgyhbn2
GET https://markdownregistry.com/api/v1/resolve?ref=k-dense-ai/scientific-agent-skills/cellxgene-census
GET https://markdownregistry.com/api/v1/blob/3e7cee2dc1416ab4f37e9304ee0b0c84d09a23b3619f79731b2b99d6c739af26