Open GIS Toolkit

Production-grade geospatial workflows with an open-first stack and pragmatic hosted/SaaS choices when global scale, latency, SLA, or data quality makes local processing a poor fit. Cloud-native by default: STAC for discovery, GeoParquet + COG + PMTiles for storage, DuckDB and PostGIS for compute, MapLibre and Martin for delivery.

Reproducible project-first contract

Core principle: reasoning may be exploratory; the delivered analysis must be deterministic, inspectable, and reproducible.

For any material multi-stage GIS analysis, do not optimize for reaching the final map, dashboard, or answer quickly. A one-off polished dashboard is not the deliverable — a reproducible technical GIS project is. First establish a reusable project artifact, then derive the map/dashboard/report from it.

Before treating an analysis as complete, you MUST compile (or maintain) a project like examples/tartu-development: a canonical project.yaml (open-gis-project/v1), pipeline.py, and README.md; pinned sources with timestamps, selections and licensing; explicit assumptions; every manual addition or correction stored as real geodata; deterministic ordered steps with explicit CRS; machine-readable validation rules plus the report from the run; and output definitions with semantic presentation intent and provenance surfaced in the rendered view. references/project-spec.md is the full schema — read it before compiling a project.

Workflow (agent may retry/experiment internally, but the accepted analysis is recompiled deterministically):