spatial-svg-detection

spatial-svg-detection is a skill for Claude Code, Codex from ShangBioLab/SpatialClaw. It costs 26 tokens per session (822 once invoked), scanned A, original, Apache-2.0.

A tool for finding genes whose activity changes in patterned ways across tissue coordinates. These are called spatially variable genes because their expression is not randomly distributed across the tissue.

In plain words
What is it for?
Use it with processed spatial transcriptomics data to rank top spatially variable genes using Moran's I, SpatialDE, or FlashS, from the command line or through spatialclaw.
Why use it?
It helps identify genes linked to tissue regions or structures without manually testing each gene for spatial patterns.

Skill for Claude CodeCodex

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

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.

agentmods
npx agentmods add skills/shangbiolab/spatialclaw/spatial-svg-detection
Any agent
npx skills add ShangBioLab/SpatialClaw --skill spatial-svg-detection
Clone the repo
git clone --depth 1 https://github.com/ShangBioLab/SpatialClaw

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 spatial-svg-detection

README.md
[![agentmods](https://agentmods.dev/badge/skills/shangbiolab/spatialclaw/spatial-svg-detection.svg)](https://agentmods.dev/skills/shangbiolab/spatialclaw/spatial-svg-detection)
Your own site
<a href="https://agentmods.dev/skills/shangbiolab/spatialclaw/spatial-svg-detection"><img src="https://agentmods.dev/badge/skills/shangbiolab/spatialclaw/spatial-svg-detection.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 822 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00026 $0.00822
Opus 5 $0.00013 $0.00411
Sonnet 5 $0.00005 $0.00164
Haiku 4.5 $0.00003 $0.00082

Measured 6d ago against content hash 2dd3688ed224, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

spatial-svg-detection 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.

The scan reads SKILL.md. This mod also ships 3 executable files (spatial_svg_detection.py, tests/__init__.py, tests/test_spatial_svg_detection.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.

skills/spatial/spatial-svg-detection/SKILL.md · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spatial SVG Detection

This skill identifies genes whose expression varies non-randomly across tissue coordinates.

Methods

Method Input Matrix Notes
morans adata.X log-normalized expression Squidpy Moran's I spatial autocorrelation
spatialde adata.layers["counts"] raw counts when available NaiveDE stabilization followed by SpatialDE
flashs adata.layers["counts"] raw counts when available Python-native randomized kernel approximation

CLI

python skills/spatial/spatial-svg-detection/spatial_svg_detection.py \
  --input <processed.h5ad> \
  --method morans \
  --n-top-genes 20 \
  --output <dir>

python skills/spatial/spatial-svg-detection/spatial_svg_detection.py --demo --output <dir>
spatialclaw run spatial-svg-detection --input <file.h5ad> --output <dir>

Allowed --method values: morans, spatialde, flashs.

Parameters

Parameter Default Description
--input - Processed spatial .h5ad
--output required Output directory
--demo off Run built-in demo
--method morans morans, spatialde, or flashs
--n-top-genes 20 Number of top SVGs to report/plot
--fdr-threshold 0.05 FDR cutoff for significance

Output

output_dir/
├── report.md
├── result.json
├── processed.h5ad
├── figures/
│   └── top_svg_spatial.png
└── tables/
    └── svg_results.csv

Dependencies

Required Python packages:

  • scanpy
  • squidpy
  • matplotlib
  • numpy
  • pandas

Optional Python packages:

  • SpatialDE
  • NaiveDE
  • flashs

Safety

  • Local-first processing.
  • Reports include SPATIALCLAW disclaimers.
  • Results are stored in adata.uns; original data are preserved in the output copy.

Citations

  • Squidpy — spatial autocorrelation.
  • SpatialDE — Svensson et al., Nature Methods 2018.
  • FlashS — frequency-domain kernel testing for SVGs.
  • Moran's I — spatial autocorrelation statistic.

Read the full file on GitHub · 117 lines

Files

What ships with it

3 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. 6d ago First seen · 117 lines · 26 tokens per session scan A 2dd3688ed224

Subscribe to this mod's changes

spatial-svg-detection is a skill published in the GitHub repository ShangBioLab/SpatialClaw (11 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 26 tokens to every session and 822 once invoked, about $0.0001 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.

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