AI Agent Integration with WebMCP

What is WebMCP?

WebMCP (Model Context Protocol for the Web) is an experimental browser API that lets a webpage register tools an AI agent can call. Instead of copy-pasting data between a chat and a tool, the agent invokes the tool directly in the page where your data already lives — with your files never leaving the browser.

How to enable it

1. Use Chrome 146+ (Canary/Dev channel).
2. Enable the flag at chrome://flags/#enable-webmcp-testing.
3. Open GIS Toolbox — the tools register automatically. Check the browser console for the confirmation message.

Available tools for agents

Once enabled, agents can call these tools:

Sixteen tools covering coordinate conversion (single + batch), CRS lookup and validation, format conversion (GeoJSON, CSV, KML, Shapefile, GPX, WKT, TopoJSON, GeoPackage, DXF), batch format conversion, spatial analysis (buffer, intersect, union, difference, simplify, explode, flatten, measure), and geometry generators (grid, Voronoi, TIN, random points).

Example prompts

• "Convert these GPS coordinates from WGS84 to EPSG:3857."
• "Buffer this GeoJSON by 2 km."
• "Convert all files in this ZIP to GeoJSON."
• "Generate a hex grid for bbox -1,-1,1,1 with cell side 0.25 degrees."

WebMCP FAQ