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deepspot-m skill

by K-Dense-AI·K-Dense-AI/scientific-agent-skills·47k stars·MIT

Generate transcriptome-wide virtual spatial transcriptomics from H&E histology with DeepSpot-M. Use when you need spatial gene expression in log1p-CPM for 224x224 tiles at about 20x, want to query protein-coding genes by symbol instead of a fixed panel, or want to run prediction across a whole slide after tiling with histolab.

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Install the deepspot-m skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/K-Dense-AI/scientific-agent-skills.git /tmp/scientific-agent-skills
mkdir -p ~/.claude/skills
cp -r /tmp/scientific-agent-skills/skills/deepspot-m ~/.claude/skills/deepspot-m
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

DeepSpot-M

Overview

DeepSpot-M is a multimodal foundation model that maps a 224x224 H&E histology tile to spatial gene expression in log1p-CPM. The output is virtual spatial transcriptomics: one value per queried gene per tile, laid out on the grid the tiles came from.

A LoRA-adapted pathology foundation backbone (Midnight) tokenises the tile. A cross-attention gene decoder lets each gene query attend to the patch tokens, and a gene router hypernetwork builds gene-specific projections from frozen biological embeddings (Evo 2, Orthrus, ProtT5, scGPT, Apertus). Genes enter the model as queryable embeddings rather than fixed output slots, so the released model covers a ~19k protein-coding gene panel including genes unseen in training. The panel ships with the weights as tokens.csv and is exposed as model.gene_names; genes outside it cannot be queried in this release.

Applied to TCGA, the model produced a virtual spatial transcriptomics atlas of 28,664 slides across 32 cancer types.

Licensing

The code is PolyForm Noncommercial 1.0.0 and the weights are CC-BY-NC-SA-4.0. Use it for noncommercial research and check both licences before redistributing outputs.

Installation

uv pip install deepspotm==1.0.0

Version 1.0.0 targets Python 3.10 to 3.13 and pulls in PyTorch. Install the PyTorch build that matches your CUDA version first if you want GPU inference.

Model access

The weights are gated:

  1. Open and request access.
  2. Once access is granted, authenticate the machine that will download them:
huggingface-cli login

from_pretrained reads that cached token, so a login is needed once per machine.

Quick start

from deepspotm import DeepSpotM

model, image_processor = DeepSpotM.from_pretrained("ratschlab/DeepSpotM", source="scgpt")

vals = model.predict_genes(image_processor(pil_tile).unsqueeze(0), ["EPCAM", "CD3D"])

piltile is a PIL image of exactly 224x224 pixels. imageprocessor turns it into a tensor, unsqueeze(0) adds the batch dimension, and predictgenes takes the batch plus a list of HGNC gene symbols. Values come back in log1p-CPM, aligned with the gene list you passed, so keep that list beside the output to keep the columns labelled. Symbols must be in the released ~19k-gene panel (model.genenames); an unknown symbol raises KeyError naming the offending genes.

Tile requirements

Tiles must be 224x224 RGB at roughly 20x magnification (about 0.5 microns per pixel). Check the size at the boundary of your pipeline rather than passing an unchecked crop through:

TILE_PX = 224

def require_tile(tile):
    """Return an RGB 224x224 tile, or raise if the crop is the wrong size."""
    if tile.size != (TILE_PX, TILE_PX):
        raise ValueError(
            f"DeepSpot-M expects a {TILE_PX}x{TILE_PX} tile at about 20x "
            f"(~0.5 microns per pixel); got {tile.size[0]}x{tile.size[1]}. "
            "Re-tile at the matching level or resample the crop."
        )
    return tile.convert("RGB")

Extract tiles at the slide level whose resolution is nearest 0.5 microns per pixel, then crop to 224x224 there. Resampling from a coarser level changes the texture the backbone reads.

Keep the dependency optional

deepspotm and its weights are a heavy, gated dependency. Import it inside the function that needs it so the surrounding project installs, imports and tests without it, and turn an ImportError into a message that names every step:

DEEPSPOTM_HELP = (
    "DeepSpot-M is unavailable. Install it with `uv pip install deepspotm==1.0.0`, request "
    "access to the gated weights at https://huggingface.co/ratschlab/DeepSpotM, then "
    "authenticate with `huggingface-cli login`."
)

def load_deepspotm(source="scgpt"):
    try:
        from deepspotm import DeepSpotM
    except ImportError as exc:
        raise RuntimeError(DEEPSPOTM_HELP) from exc
    return DeepSpotM.from_pretrained("ratschlab/DeepSpotM", source=source)

Embedding sources

source selects which frozen gene embedding the router builds projections from. It is one of five values:

Each gives a different view of gene identity. Pick one per run, and run the same tiles through more than one source when the choice matters to your analysis. See references/api.md for the full call surface, batching and device placement, gene symbol handling and output units.

Whole slide workflow

Prediction is per tile, so a slide-scale run is a tiling step followed by batched inference:

coordinates.

  1. Extract 224x224 tiles on a grid with the histolab skill, keeping each tile's
  1. Process and stack tiles into batches with torch.stack.
  2. Call predict_genes once per batch with the same gene list.
  3. Concatenate the batches into a tiles-by-genes matrix and attach the coordinates.

That matrix is the virtual spatial transcriptomics map for the slide, and it drops straight into AnnData for downstream spatial analysis. references/whole_slide.md has a worked loop, batch sizing and an AnnData assembly step.

Common use cases

far beyond the few hundred genes of a typical spatial assay panel.

  • Spatial expression maps for marker genes across a tumour section.
  • Transcriptome-wide prediction over a slide cohort with no matching assay run.
  • Querying any of the ~19k panel genes by symbol, including genes unseen in training —
  • Adding an expression channel to a morphology-only histology pipeline.
  • Building a slide-level cohort atlas, as done for TCGA.

Detailed references

sources and how to choose, batching, device placement, gene symbol handling, and converting log1p-CPM output.

  • references/api.md: frompretrained and predictgenes in full, the five embedding

assembling and storing a tiles-by-genes matrix, and cohort-scale runs.

  • references/whole_slide.md: tiling with histolab, a slide-scale prediction loop,

Primary sources

  • Paper: (medRxiv, posted 22 June 2026)
  • Code:
  • Weights:
  • PyPI:

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