Spline MCP Server

Implementation Reference

• src/tools/advanced-material-tools.js:491-514 (handler)

  The handler function retrieves the list of material layers for a given scene and material ID via an API GET request and returns the JSON stringified layers or an error message.

  async ({ sceneId, materialId }) => {
    try {
      const layers = await apiClient.request('GET', `/scenes/${sceneId}/materials/${materialId}/layers`);
      
      return {
        content: [
          { 
            type: 'text', 
            text: JSON.stringify(layers, null, 2) 
          }
        ]
      };
    } catch (error) {
      return {
        content: [
          { 
            type: 'text', 
            text: `Error listing material layers: ${error.message}` 
          }
        ],
        isError: true
      };
    }
  }

• src/tools/advanced-material-tools.js:487-490 (schema)

  Zod schema for validating the input parameters: sceneId and materialId as non-empty strings.

  {
    sceneId: z.string().min(1).describe('Scene ID'),
    materialId: z.string().min(1).describe('Material ID'),
  },

• src/tools/advanced-material-tools.js:486-515 (registration)

  Registration of the 'listMaterialLayers' tool using server.tool method within the registerAdvancedMaterialTools function.

    'listMaterialLayers',
    {
      sceneId: z.string().min(1).describe('Scene ID'),
      materialId: z.string().min(1).describe('Material ID'),
    },
    async ({ sceneId, materialId }) => {
      try {
        const layers = await apiClient.request('GET', `/scenes/${sceneId}/materials/${materialId}/layers`);
        
        return {
          content: [
            { 
              type: 'text', 
              text: JSON.stringify(layers, null, 2) 
            }
          ]
        };
      } catch (error) {
        return {
          content: [
            { 
              type: 'text', 
              text: `Error listing material layers: ${error.message}` 
            }
          ],
          isError: true
        };
      }
    }
  );