Unleash MCP (Feature Toggle)

Instructions

Implementation Reference

• src/tools/get-feature-types.ts:6-46 (handler)

  The main handler function for the getFeatureTypes tool, which fetches all feature types using getAllFeatureTypes and returns them as JSON or error.

  async function handleGetFeatureTypes() {
    try {
      // Get all feature types
      const featureTypes = await getAllFeatureTypes();
      
      if (!featureTypes) {
        return {
          content: [{ 
            type: "text", 
            text: JSON.stringify({ 
              success: false,
              error: "Failed to fetch feature types" 
            }, null, 2)
          }],
          isError: true
        };
      }
      
      return {
        content: [{ 
          type: "text", 
          text: JSON.stringify({ 
            success: true,
            count: featureTypes.length,
            featureTypes: featureTypes
          }, null, 2)
        }]
      };
    } catch (error: any) {
      return {
        content: [{ 
          type: "text", 
          text: JSON.stringify({ 
            success: false,
            error: error.message 
          }, null, 2)
        }],
        isError: true
      };
    }
  }

• src/tools/get-feature-types.ts:51-55 (schema)

  Tool schema/definition exporting the name, description, and handler for getFeatureTypes (no input parameters).

  export const getFeatureTypes = {
    name: "getFeatureTypes",
    description: "Get a list of all feature types with their descriptions and lifetimes",
    handler: handleGetFeatureTypes
  }; 

• src/server.ts:183-187 (registration)

  Registration of the getFeatureTypes tool on the MCP server using server.tool().

  server.tool(
    getFeatureTypes.name,
    getFeatureTypes.description,
    getFeatureTypes.handler as any
  );

• src/unleash/get-all-feature-types.ts:8-16 (helper)

  Helper function that fetches all feature types from the Unleash API via HTTP GET request.

  export async function getAllFeatureTypes(): Promise<any[] | null> {
    try {
      const response = await client.get('/api/admin/feature-types');
      return response.data || [];
    } catch (error) {
      logger.error('Error fetching feature types:', error);
      return null;
    }
  }