Mapsmith MCP server

Read from the package source without running it. The installed server may list more.

• aspect

  Aspect from a DEM: downslope azimuth in degrees, 0 = north. GeoTIFF in/out.

• buffer_layer

  Buffer all features by a distance in meters.

• centroid_layer

  One point per feature: the geometric centroid, computed in a metric CRS.

• clip_layer

  Clip a layer to the area of a mask layer. CRS are aligned automatically.

• convert_format

  Convert a vector dataset between formats; the target is chosen by the output extension (.parquet, .gpkg, .geojson).

• describe_dataset

  Inspect a dataset, vector or raster, before analysing it.

• dissolve_layer

  Merge features into one geometry per value of `by` (or one feature in all).

• execute_planwrite action

  Validate, then execute a geoprocessing plan step by step.

• explode_layer

  Split multi-part geometries into one feature per part (attributes copied).

• flow_accumulation

  D8 flow accumulation from a DEM (GeoTIFF in/out). Depressions are filled first.

• get_provenance

  Return the full lineage manifest of a MapSmith output dataset.

• hillshade

  Shaded relief from a DEM: GeoTIFF in, GeoTIFF out (values scaled 0-32767).

• list_operations
• measure_area

  Area per feature in SQUARE METRES, written to a named column, with the total in the result.

• merge_layers

  Append two or more layers into one (schema union, attributes aligned by name).

• nearest_join

  Attach each feature's nearest neighbour from another layer, with the distance IN METERS in a named column.

• overlay_layers

  Set-theoretic overlay of two layers: intersection (default), union, identity, symmetric_difference or difference.

• preview_map

  Show datasets on the interactive in-chat map panel (MCP Apps).

• reproject_layer

  Reproject a layer to a target CRS, e.g. 'EPSG:32632' or a WKT string.

• run_operationwrite action

  Run ANY catalog operation by name, including the ones with no tool of their own — which is most of them, and increasingly so.

• run_sqlwrite action

  Run spatial SQL (DuckDB dialect, ST_* functions, read_parquet/ST_Read for files).

• server_info

  MapSmith version, licensing, and available engines.

• simplify_layer

  Simplify geometries (Douglas-Peucker, topology preserved) with the drift measured: the manifest records total area and length before and after.

• slope

  Slope gradient from a DEM: GeoTIFF in, GeoTIFF out.

• spatial_join

  Join by spatial predicate (intersects/within/contains).

• validate_plan

  Statically validate a multi-step geoprocessing plan BEFORE running anything.

• watershed

  Watershed of each pour point: DEM + points in, basin raster out (GeoTIFF).

• zonal_statistics

  Statistics of a raster within each vector zone (exact fractional pixel coverage).

• Code scan43 source files scanned20/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitylocal package, no credentials required12/15
• Maintenancelast push 5 days ago15/15
• Maintainer identityregistry namespace matches repository owner6/10

Mapsmith: common questions

Is Mapsmith MCP server safe?

Mostly: it is graded B (82/100). Read the Mapsmith safety report

How do I install Mapsmith?

It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.

Does Mapsmith need an API key?

No secret keys are declared. It reads 2 settings from the environment.

Is Mapsmith maintained?

The last commit was 6 days ago (2026-09-15). The latest release is v0.4.0.