Geomaster

What it does

When your agent uses it

• Processing satellite imagery
• Aligning coordinate systems and raster grids
• Accessing STAC catalogs
• Analyzing geospatial time series

Example prompts

• “Use the geomaster skill to support geospatial research workflows for remote sensing, vector and raster GIS, spatial statistics, terrain and network…”
• “/geomaster”

Requirements

• Python 3
• Compatibility (from SKILL.md): Core examples require Python 3.12+ and GeoPandas, Rasterio, NumPy and PyProj. Optional workflows require their named packages, native GIS applications, GPU runtimes, or service credentials and network access.

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

1. 1Record product/collection ID, acquisition time, processing baseline, license,
2. 2Verify CRS from authoritative metadata. set_crs labels coordinates;
3. 3Align extent, affine transform, dimensions, pixel registration and resolution.
4. 4Preserve nodata, clouds, shadows and saturation masks. Convert unsigned integers
5. 5Run the analysis at a defensible support/resolution. Keep training labels and
6. 6Export CRS, transform, valid-data mask, units, model settings and provenance.

What it can do on your machine

Read from SKILL.md and the folder at commit 92ace75. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/ (Python), which the agent can run.

  Shell commands in SKILL.md call:

  • uv

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Hosts in commands or code, which the agent is likely to contact:

  • planetarycomputer.microsoft.com

  Also links to:

  • arxiv.org
  • doi.org
  • export.arxiv.org

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Core examples require Python 3.12+ and GeoPandas, Rasterio, NumPy and PyProj. Optional workflows require their named packages, native GIS applications, GPU runtimes, or service credentials and network access.

  From compatibility in the SKILL.md frontmatter.

Context cost

Geomaster loads about 2.8k tokens when it runs, and up to ~36k if it reads all its reference files. Until then it costs about 107 tokens; SKILL.md has 842 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~107

When it runs · the whole SKILL.md, loaded when a task matches

~2.8k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~36k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from K-Dense-AI/scientific-agent-skills at commit 92ace75, republished under its MIT licence (© K-Dense-AI). 842 words, ~2,823 tokens.

name

geomaster

description

Supports geospatial research workflows for remote sensing, vector and raster GIS, spatial statistics, terrain and network analysis, and machine learning for Earth observation. Use when processing satellite imagery, aligning coordinate systems and raster grids, accessing STAC catalogs, analyzing geospatial time series, or implementing scientific GIS workflows in Python, R, Julia, JavaScript, C++, Java, Go, or Rust.

compatibility

Core examples require Python 3.12+ and GeoPandas, Rasterio, NumPy and PyProj. Optional workflows require their named packages, native GIS applications, GPU runtimes, or service credentials and network access.

license

MIT License

metadata.version

1.5

metadata.skill-author

K-Dense Inc.

metadata.last-reviewed

2026-10-01

# In a dedicated environment; install only the workflow's optional dependencies.
uv venv --python 3.13
uv pip install geopandas==1.2.0 rasterio==1.5.2 shapely==2.1.2 pyproj==3.8.0
uv pip install rioxarray==0.23.0 xarray==2026.9.0 'dask[array]' scikit-learn==1.9.1
uv pip install pystac-client==0.9.0 planetary-computer==1.0.0 odc-stac
# For osgeo/native CLI or PDAL, use a separate conda-forge environment:
# conda create -n geo-native -c conda-forge python=3.13 gdal pdal python-pdal

from raster_workflows import write_ndvi

# This example assumes a VERIFIED four-band B02/B03/B04/B08 stack whose mask
# already excludes clouds/shadows, and harmonized DN reflectance = DN * 0.0001.
write_ndvi('s2_masked_stack.tif', 'ndvi.tif', red_band=3, nir_band=4,
           scale=0.0001, offset=0.0)

import rasterio
from raster_workflows import terrain_metrics

with rasterio.open('dem_metres.tif') as src:
    slope_deg, aspect_deg, shade = terrain_metrics(
        src.read(1, masked=True), src.transform, src.crs)

import geopandas as gpd
from raster_workflows import classify_imagery

training = gpd.read_file('training.gpkg')  # polygons with class_id in 1..65534
model = classify_imagery('masked_features.tif', training, 'classified.tif')

import geopandas as gpd

zones = gpd.read_file('zones.geojson')
points = gpd.read_file('points.geojson')
if zones.crs is None or points.crs is None:
    raise ValueError('Resolve missing CRS before analysis')
points = points.to_crs(zones.crs)
joined = gpd.sjoin(points, zones, how='inner', predicate='within')
stats = joined.groupby('zone_id')['value'].agg(['count', 'mean', 'std'])

# Local data only: verify the estimated CRS area of use before accepting it.
metric = zones.to_crs(zones.estimate_utm_crs())
metric['area_m2'] = metric.area
buffers = metric.geometry.buffer(1000).to_crs(zones.crs)

from pystac_client import Client
import planetary_computer

catalog = Client.open('https://planetarycomputer.microsoft.com/api/stac/v1',
                      modifier=planetary_computer.sign_inplace)
search = catalog.search(collections=['sentinel-2-l2a'],
                        bbox=[-122.5, 37.7, -122.3, 37.9],
                        datetime='2023-06-01/2023-06-30',
                        query={'eo:cloud_cover': {'lt': 20}}, max_items=5)
items = list(search.items())
if not items:
    raise ValueError('No matching scenes')
# Save item IDs/properties; inspect asset keys, scale/offset and QA before load.

import osmnx as ox
import networkx as nx
G = ox.graph_from_place('Portland, Maine, USA', network_type='drive')
G = ox.routing.add_edge_speeds(G)
G = ox.routing.add_edge_travel_times(G)
origin = ox.distance.nearest_nodes(G, -70.26, 43.66)
destination = ox.distance.nearest_nodes(G, -70.27, 43.67)
route = nx.shortest_path(G, origin, destination, weight='travel_time')

import rioxarray
from rasterio.shutil import copy as rio_copy
from rio_cogeo.cogeo import cog_validate

cube = rioxarray.open_rasterio('large.tif', masked=True,
                             chunks={'band': 1, 'x': 1024, 'y': 1024})
# Compute bounded windows or reductions; do not force the entire cube into memory.
rio_copy('input.tif', 'output_cog.tif', driver='COG', compress='DEFLATE')
valid, errors, warnings = cog_validate('output_cog.tif')
if not valid:
    raise ValueError(errors)

© K-Dense-AI, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 17 other files (scripts, references) in skills/geomaster of K-Dense-AI/scientific-agent-skills.

• SKILL.md
• README.md
• references/advanced-gis.md
• references/big-data.md
• references/code-examples.md
• references/coordinate-systems.md
• references/core-libraries.md
• references/data-sources.md
• references/gis-software.md
• references/industry-applications.md
• references/machine-learning.md
• references/programming-languages.md
• references/remote-sensing.md
• references/review.md
• references/scientific-domains.md
• references/specialized-topics.md
• references/troubleshooting.md
• scripts/raster_workflows.py

Open the folder on GitHubat commit 92ace75

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in K-Dense-AI/scientific-agent-skills, which our catalogue first saw on October 7, 2026.

• lingxling/awesome-skills-cnclaude-scientific-skills/skills/geomaster