mcp · Global

cng-sandbox

A place to explore the capabilities of open source tooling and cloud native geospatial data formats, pulling together existing libraries and tools from the community.

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What's in it

Data offered docs-verified: GeoTIFF to Cloud-Optimized GeoTIFF raster tiles · NetCDF to Cloud-Optimized GeoTIFF raster tiles · HDF5 to Cloud-Optimized GeoTIFF raster tiles · GeoJSON to vector tiles · Shapefile to vector tiles · STAC catalogue of converted datasets (pgSTAC)
Coverage llm-inferred: Global (catalogue metadata only; DOCS do not state geographic coverage)
Formats docs-verified: GeoTIFF · NetCDF · HDF5 · GeoJSON · Shapefile · Cloud-Optimized GeoTIFF · Vector tiles
Access docs-verified: Self-hosted via Docker; requires a Cloudflare R2 bucket with API credentials; licence MIT (catalogue metadata)

Useful for

Use cases llm-inferred: Convert NetCDF or HDF5 model outputs to COG tiles for client review of flood or rainfall grids · Publish GeoTIFF DEM or raster layers as COG tiles for an interactive project story · Share shapefile site or catchment boundaries as vector tiles alongside raster layers
Audience llm-inferred: GIS analysts · hydrologists · flood consultants · environmental consultants

Limitations

Constraints docs-verified: Prototype status · Requires Cloudflare R2 credentials to be configured before the stack works · Requires Docker; frontend only starts with --profile dev · Maximum upload size is 15 GB per file · Vector tiles may return 404 briefly after upload (tipg refreshes its catalog every 5 seconds) · Catalogue lists tool 'S3_BUCKET', but DOCS document it as a config variable; no MCP tool names are documented · Catalogue auth lists POSTGRES_PASSWORD as required, but DOCS give a default value (sandbox_dev_password)

Licence: MIT
Authentication: API key via env: POSTGRES_PASSWORD, R2_SECRET_ACCESS_KEY (auto-extracted from README)
GitHub stars: 4
Last commit: 14/10/2026
Last successful page check: 14/10/2026
Page health: healthy
Package: Not recorded
Verification: Not independently verified

Auto-extracted, unverified fields: tools, install, auth. Check upstream documentation.

Provenance & evidence

Daily discovery 2026-10-15: GitHub search; verified via GitHub API. Tools/install/auth auto-extracted from README.

Metadata observed 14/10/2026 · daily-2026-10-15 (github-search)