AI-ASSISTED · EDITOR-REVIEWED

Theme brief

This is the one day built for an end-to-end prompting experiment. Keep a transcript, inspect the generated code and sources, and publish what failed as well as what worked so the result tests the workflow rather than hiding it.

Official prompt
“For this map, make AI work for its money and produce something from start to finish in a chat window or on the command line.”
30DayMapChallenge 2026

02

WAYS IN

Four map ideas

01
Ask for a self-contained Leaflet map from a small public dataset.
02
Generate a Python map from a precise chart specification.
03
Compare the same prompt across two assistants and audit the differences.
04
Prompt an accessible map, then manually test its keyboard and screen-reader behavior.

03

IN THE DIRECTORY

Recommended tools

Leaflet

A compact library that assistants can generate as a single inspectable HTML file.

Open source · View details

Folium

Lets a prompted Python workflow produce an interactive Leaflet map.

Open source · View details

D3 (d3-geo)

Useful for a more experimental projection or SVG map generated from code.

Open source · View details

Observable

A notebook makes data, code, output and revisions visible together.

Freemium · View details

04

START WITH A CLEAR LICENSE

Data sources

Natural Earth administrative areas

Generalized world boundaries at multiple scales; read boundary notes.

Public domain OpenStreetMap points of interest

Query amenities, shops and other tagged places with Overpass Turbo.

ODbL 1.0 · attribution required World Bank Open Data

Country and regional indicators with an accessible API.

CC BY 4.0 for many datasets · check metadata

Licenses are a planning aid, not legal advice. Check the source record and version you actually download; terms can vary within a catalog.

05

BEFORE YOU EXPORT

Cartography check

Publish the prompt, model name, date, data source and every manual correction. Reproducibility is the most interesting layer of this map.

06

COMMUNITY MAPS

Selected work

Selections begin after this theme closes.

First participate officially by posting publicly with #30DayMapChallenge. You can then suggest that original post for our independent MapTools picks. We link to the source, credit every author and use images only with permission.

Suggest for MapTools picks