AI Meta MCP Server

Instructions

Implementation Reference

• src/index.ts:416-456 (handler)

  The handler function for the 'delete_function' tool. It checks if the specified function exists in the customTools object, deletes it if it does, saves the tools database, and returns appropriate success or error responses.

  async ({ name }) => {
    console.error(`Deleting function: ${name}`);
    
    // Check if function exists
    if (!customTools[name]) {
      return {
        isError: true,
        content: [
          {
            type: "text",
            text: `No function named "${name}" exists.`,
          },
        ],
      };
    }
  
    // Delete the tool
    try {
      delete customTools[name];
      await saveToolsDatabase();
  
      return {
        content: [
          {
            type: "text",
            text: `Successfully deleted function "${name}".`,
          },
        ],
      };
    } catch (error) {
      return {
        isError: true,
        content: [
          {
            type: "text",
            text: `Error deleting function: ${error instanceof Error ? error.message : String(error)}`,
          },
        ],
      };
    }
  }

• src/index.ts:413-415 (schema)

  Input schema for the 'delete_function' tool, defining the 'name' parameter using Zod validation.

  {
    name: z.string().min(1).describe("Name of the function to delete"),
  },

• src/index.ts:410-457 (registration)

  Registration of the 'delete_function' tool on the MCP server using server.tool(), specifying name, description, input schema, and handler.

  server.tool(
    "delete_function",
    "Delete a custom MCP function",
    {
      name: z.string().min(1).describe("Name of the function to delete"),
    },
    async ({ name }) => {
      console.error(`Deleting function: ${name}`);
      
      // Check if function exists
      if (!customTools[name]) {
        return {
          isError: true,
          content: [
            {
              type: "text",
              text: `No function named "${name}" exists.`,
            },
          ],
        };
      }
  
      // Delete the tool
      try {
        delete customTools[name];
        await saveToolsDatabase();
  
        return {
          content: [
            {
              type: "text",
              text: `Successfully deleted function "${name}".`,
            },
          ],
        };
      } catch (error) {
        return {
          isError: true,
          content: [
            {
              type: "text",
              text: `Error deleting function: ${error instanceof Error ? error.message : String(error)}`,
            },
          ],
        };
      }
    }
  );