Research

Ask questions of geospatial data with a Claude or Codex skill

A skill lets Claude or Codex write geospatial SQL so you can ask map questions in plain English.

By rzk on Hacker News · Posted · Added Oct 16, 2026 · 2 sources

Difficulty
IntermediateOur rating
Time to build
Not reportedOur estimate
Monthly cost
Not reported
Revenue
Not reportedWe only show revenue the source states
Engagement
139 HN points22 comments · fetched Oct 15, 2026

What they did

Install the geosql skill and ask your agent location questions; it writes and runs the spatial queries.

How it went

Released open source by Dekart.

Worth knowing

This is the builder launching their own product on HN.

Builder recipe

Our own starting point, written from the source. Adapt it to your setup.

Stack

  • Claude Code or Codex
  • A spatial database

Steps

  1. Define the question and success criteria.
  2. Let agents search, run or summarize in parallel.
  3. Verify key results yourself.
  4. Write up findings with sources.

Starter prompt

Using the parcels and flood-zone tables, list parcels over 1 acre that are fully outside flood zones, and map them.

Tags

Tool SQL
Role Analyst
Industry GIS

Read the original

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