fix: geojson_preview_tool uses geojson.io root URL instead of dead /next/ path

Author: zmofei

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 - **GeoJSON Preview UI resource** now mints its short-lived Mapbox GL token per request instead of reusing a process-wide cached one, and verifies the minted token belongs to the requesting account before embedding it.
 
+### Fixed
+
+- **geojson_preview_tool**: Generate `https://geojson.io/?data=...` instead of `https://geojson.io/next/?data=...`. The `/next/` path now returns 404, so the previewed link no longer opened a broken page. The `?data=` query-param format is unchanged.
+
 ## 0.8.0 - 2026-05-05
 
 ## 0.7.5 - 2026-05-05

src/tools/geojson-preview-tool/GeojsonPreviewTool.ts

@@ -14,7 +14,7 @@ import {
 export class GeojsonPreviewTool extends BaseTool<typeof GeojsonPreviewSchema> {
   name = 'geojson_preview_tool';
   description =
-    'Generate a geojson.io/next URL to visualize GeoJSON data. Returns only the URL link.';
+    'Generate a geojson.io URL to visualize GeoJSON data. Returns only the URL link.';
   readonly annotations = {
     readOnlyHint: true,
     destructiveHint: false,
@@ -78,13 +78,13 @@ export class GeojsonPreviewTool extends BaseTool<typeof GeojsonPreviewSchema> {
         };
       }
 
-      // Generate geojson.io/next URL
-      // Note: geojson.io/next uses query params (?data=) not hash params (#data=)
+      // Generate geojson.io URL
+      // Note: geojson.io uses query params (?data=) not hash params (#data=)
       const geojsonString = JSON.stringify(geojsonData);
       const encodedGeoJSON = encodeURIComponent(geojsonString);
-      const geojsonIOUrl = `https://geojson.io/next/?data=data:application/json,${encodedGeoJSON}`;
+      const geojsonIOUrl = `https://geojson.io/?data=data:application/json,${encodedGeoJSON}`;
 
-      // Use geojson.io/next as the display URL
+      // Use geojson.io as the display URL
       const displayUrl = geojsonIOUrl;
 
       // Build content array with URL

test/tools/__snapshots__/tool-naming-convention.test.ts.snap

@@ -44,7 +44,7 @@ exports[`Tool Naming Convention > should maintain consistent tool list (snapshot
   },
   {
     "className": "GeojsonPreviewTool",
-    "description": "Generate a geojson.io/next URL to visualize GeoJSON data. Returns only the URL link.",
+    "description": "Generate a geojson.io URL to visualize GeoJSON data. Returns only the URL link.",
     "toolName": "geojson_preview_tool",
   },
   {

test/tools/geojson-preview-tool/GeojsonPreviewTool.test.ts

@@ -14,7 +14,7 @@ describe('GeojsonPreviewTool', () => {
       const tool = new GeojsonPreviewTool();
       expect(tool.name).toBe('geojson_preview_tool');
       expect(tool.description).toBe(
-        'Generate a geojson.io/next URL to visualize GeoJSON data. Returns only the URL link.'
+        'Generate a geojson.io URL to visualize GeoJSON data. Returns only the URL link.'
       );
     });
 
@@ -39,8 +39,8 @@ describe('GeojsonPreviewTool', () => {
     expect(result.content[0].type).toBe('text');
     const content = result.content[0];
     if (content.type === 'text') {
-      // Should return geojson.io/next URL with query param format
-      expect(content.text).toMatch(/^https:\/\/geojson\.io\/next\/\?data=/);
+      // Should return geojson.io URL with query param format
+      expect(content.text).toMatch(/^https:\/\/geojson\.io\/\?data=/);
     }
 
     // Verify MCP-UI resource is included by default
@@ -53,9 +53,9 @@ describe('GeojsonPreviewTool', () => {
       }
     });
 
-    // Verify the iframe URL is geojson.io/next with query param
+    // Verify the iframe URL is geojson.io with query param
     const iframeUrl = (result.content[1] as any).resource.text;
-    expect(iframeUrl).toMatch(/^https:\/\/geojson\.io\/next\/\?data=/);
+    expect(iframeUrl).toMatch(/^https:\/\/geojson\.io\/\?data=/);
   });
 
   it('returns URL and MCP-UI resource for backward compatibility', async () => {
@@ -94,8 +94,8 @@ describe('GeojsonPreviewTool', () => {
     expect(result.content).toHaveLength(2);
     const content = result.content[0];
     if (content.type === 'text') {
-      // Should return geojson.io/next URL with query param
-      expect(content.text).toMatch(/^https:\/\/geojson\.io\/next\/\?data=/);
+      // Should return geojson.io URL with query param
+      expect(content.text).toMatch(/^https:\/\/geojson\.io\/\?data=/);
     }
   });
 
@@ -132,8 +132,8 @@ describe('GeojsonPreviewTool', () => {
     expect(result.content).toHaveLength(2);
     const content = result.content[0];
     if (content.type === 'text') {
-      // Should return geojson.io/next URL with query param
-      expect(content.text).toMatch(/^https:\/\/geojson\.io\/next\/\?data=/);
+      // Should return geojson.io URL with query param
+      expect(content.text).toMatch(/^https:\/\/geojson\.io\/\?data=/);
     }
   });
 
@@ -185,8 +185,8 @@ describe('GeojsonPreviewTool', () => {
     expect(result.content).toHaveLength(2);
     const content = result.content[0];
     if (content.type === 'text') {
-      // Should return geojson.io/next URL with query param
-      expect(content.text).toMatch(/^https:\/\/geojson\.io\/next\/\?data=/);
+      // Should return geojson.io URL with query param
+      expect(content.text).toMatch(/^https:\/\/geojson\.io\/\?data=/);
     }
   });
 });