Danny McVey
GIS · Python · Spatial AI

Maps, software, and AI-assisted work.

I build GIS tools, reusable agent workflows, and interactive map experiments, with a focus on keeping Python and ArcPy automation inspectable and reliable.

Explore work & tools Reliability Desk Get in touch
Background: Former Esri Product Engineer (ArcGIS Pro Geoprocessing) · Enterprise Utility GIS Focus: ArcPy · Python · GeoPandas · PostGIS · Agent Workflows
Open source · GIS Agent Skills

Give your coding agent GIS expertise.

Reusable skills for planning spatial workflows, checking data, and delivering maps. Use them with GitHub Copilot and other coding agents.

Install GIS Agent Skills
/kml-authorBuild and validate a KML or KMZ deliverable. /living-atlasFind and vet Living Atlas layers for your map. /static-mapPlan a vector tile map for read-only reference work.
Current builds

Maps you can explore.

All experiments
JevMap over Los Angeles with sample points and the Ask the map, Keep control headline
AI + maps · Prototype

JevMap

Give a map a task. Inspect how AI chooses a spatial operation and how code executes it.

Explore the demo
Strum the Grid synthetic network instrument
Map + music · Playable

Strum the Grid

Strum fictional power lines and explore how tension, length, and resonance shape their sound.

Play the instrument
Slinga Atlas concept showing colorful repeated running routes on a dark map-like field
Running atlas · Public docs

Slinga

A private, self-hostable running atlas for maps, training history, and permission-controlled AI tools.

Read the public docs
Explore

Work

All products & services
01

Guidance

Tools and guidance for safer GIS software.

ArcPy Project Starter Free · ZIP download ArcPy Safety Harness Available now · $49 Founding Project Review Founding offer · $149 GIS AI Working Agreement Kit Planned team kit · $149 All products & services Browse starter kits, reviews, and retainers
02

Systems

GIS tools, infrastructure, and agent workflows.

GIS Agent Skills Reusable skills for GIS-focused agents GIS Automation Reliability Desk Focused maintenance for production GIS automation Spatial Workbench Spatial tools for agents, scripts, and humans ArcGIS Pro CLI ArcGIS Pro from Python environments ArcGIS Pro AI Toolbox AI tools for geoprocessing workflows
03

Experiments

Smaller projects, prototypes, and playful things.

GridScaperExplore a small town and bring its electrical network to life. SpancraftA Minecraft-inspired world builder with power line engineering tools. SpoonerA phoneme-based spoonerism generator and Python package. All experimentsBrowse the full playground
04

Writing

The latest posts on GIS, software, and building.

The Human Stays Sequential September 10, 2026 GIS from Scratch September 10, 2026 Your ArcPy Script Is Becoming Software September 4, 2026 View all writing Open the blog
Work together

Need a second pair of eyes on a Python or GIS workflow?

From a one-time baseline audit of an inherited ArcPy script to ongoing monthly reliability support, I help teams keep spatial automation organized and inspectable.

Reliability Desk Contact me