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Get Started Free →datopian/portaljs-add-geo
Auto-ingest a geospatial file (GeoJSON, Shapefile, GeoPackage, KML/KMZ, FlatGeobuf, CSV-with-geometry) into a PortalJS portal on the user's own machine, with no server. Normalizes CRS to EPSG:4326, derives a PMTiles render tier and a GeoParquet query tier, pushes all three artifacts to Cloudflare R2 via Git LFS, and appends one dual-tier datasets.json entry the showcase auto-renders.
Passed 16 of 20 test cases with the skill, and 8 of 20 without it.
and 12 more in the full report
9 fixed9 passed either way4 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 9 test cases the skill fixed. Same model, same prompt, with and without the skill.
When updating resource paths in `datasets.json` after pushing LFS assets, what domain structure is used for absolute asset URLs?
| Checked | Without skill | With skill |
|---|---|---|
| Constructs absolute resource URLs using the data.portaljs.com host. | Missed | Passed |
The instructions your model reads when the skill loads.
Turn one geospatial upload into a dual-tier PortalJS dataset entirely on the user's machine — no server-side container compute, keeping the zero-backend bet end-to-end. From a single source the skill derives two serverless tiers plus the preserved original:
<MapPreview> renders with MapLibre GL
over HTTP range requests; any dataset size pans and zooms with no tile server.bbox column, Hilbert-sorted)
<GeoQuery> runs spatial SQL over in place via DuckDB-Wasm.All three land on Cloudflare R2 (Git LFS → Giftless), and the skill appends one
datasets.json entry whose resources[] match the shape the showcase auto-renders (the
@reference/world-boundaries demo, PR #1647): pmtiles → <MapPreview>, geoparquet →
<GeoQuery>, original → download. No page edits are needed. It automates the manual
tippecanoe/duckdb recipes in the template README.
portaljs-catalog portal whose template ships components/MapPreview.tsx and
components/GeoQuery.tsx (PR #1647 or later).ogr2ogr, ogrinfo), tippecanoe, and
duckdb (with the spatial extension). macOS: brew install gdal tippecanoe duckdb;
Debian/Ubuntu: apt-get install gdal-bin duckdb + tippecanoe (apt or build from source);
Windows: use WSL. The skill hard-stops with the install hint if any is missing.portaljs-deploy resolves), or
an OSS self-hosted Giftless.The canonical, full step-by-step workflow is
.claude/commands/portaljs-add-geo.md
— the single source of truth. Read and follow it when executing. Summary:
ogr2ogr, tippecanoe, duckdb + spatial). Any missing →test cases passed, vs 8 / 20 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.