Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@glacier-mcp move the western boundary 50 meters east"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MCP server for interactive glacier mapping.
Renders a GeoTIFF in OpenLayers, lets you draw and edit polygons with the mouse, and exposes every vertex to an AI agent via MCP tools (get / move / add / delete). Exports the final geometry to a shapefile with a correct .prj.
Existing GIS tools (ArcGIS Pro, QGIS) can be automated via MCP, but none of them give an AI agent direct, per-vertex control over geometry while you edit the same geometry with your mouse. This project fills that gap: the map and the agent share the same polygon state.
Related MCP server: lunar
+----------------+ WebSocket +-------------------+ MCP +-------+
| OpenLayers UI | <----------------> | FastAPI backend | <----------> | Agent |
| (your mouse) | | (state + geom) | | (LLM) |
+----------------+ +-------------------+ +-------+Backend: Python 3.11, FastAPI, mcp SDK, uvicorn, shapely, pyproj.
Frontend: OpenLayers 10, vanilla JS.
I/O: rasterio (GeoTIFF), geopandas (shapefile).
Bridge: WebSocket (frontend <-> backend), MCP streamable-http (agent <-> backend).
Two ports, one process:
http://localhost:8765 - interactive map (open in browser)
http://localhost:8766 - MCP endpoint (connect your MCP client here)
Both share one PolygonState instance, so a vertex moved by the agent appears in the browser and vice versa.
pip install -r requirements.txt
python -m glacier_mcpThen:
Draw a polygon with the mouse (OpenLayers Draw interaction)
Drag a vertex (OpenLayers Modify interaction)
Connect your MCP client (Claude Desktop / Cursor / DeepSeek++ / etc.) to http://localhost:8766
Ask the agent: "move the western boundary 50 meters east"
The polygon in the browser updates as the agent edits.
Tool | What it does |
| Return current polygon as GeoJSON |
| Return vertex list with indices |
| Move a vertex by index and offset (dx, dy) |
| Insert a vertex at a position |
| Remove a vertex by index |
| Move the whole polygon by (dx, dy) |
| Apply smoothing to the boundary |
| Step through the edit history |
| Save to |
Commit 1: skeleton, README, LICENSE, pyproject, CI
Commit 2: geometry + state (shapely, undo/redo)
Commit 3: MCP server with 9 tools
Commit 4: FastAPI map server + WebSocket bridge + OpenLayers UI
Commit 5: GeoTIFF loading, shapefile export with .prj
MIT - see LICENSE.
This server cannot be deployed
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