MCPet

Instructions

Implementation Reference

• src/index.ts:306-356 (handler)

  The handler function for the 'create_pet' tool. Validates input parameters (name and type), creates a new pet object based on DEFAULT_PET, initializes timestamps, saves the pet data to file, retrieves an idle animation, and returns a success response with the animation.

  case "create_pet": {
    const name = String(request.params.arguments?.name);
    const type = String(request.params.arguments?.type) as PetType;
  
    if (!name || !type) {
      return {
        isError: true,
        content: [
          {
            type: "text",
            text: "Name and type are required to create a pet.",
          },
        ],
      };
    }
  
    if (!["cat", "dog", "dragon", "alien"].includes(type)) {
      return {
        isError: true,
        content: [
          {
            type: "text",
            text: "Pet type must be one of: cat, dog, dragon, alien.",
          },
        ],
      };
    }
  
    // Create a new pet
    pet = {
      ...DEFAULT_PET,
      name,
      type,
      created: Date.now(),
      lastInteraction: Date.now(),
    };
  
    await savePet();
  
    // Get an idle animation for the new pet
    const animation = getIdleAnimation(pet.type);
  
    return {
      content: [
        {
          type: "text",
          text: `Congratulations! You've created a new ${type} named ${name}!\n\n${animation}\n\nMake sure to take good care of your new friend!`,
        },
      ],
    };
  }

• src/index.ts:220-238 (registration)

  Registration of the 'create_pet' tool in the ListToolsRequestSchema handler, including name, description, and input schema definition for validation.

  {
    name: "create_pet",
    description: "Create a new virtual pet",
    inputSchema: {
      type: "object",
      properties: {
        name: {
          type: "string",
          description: "Name for your new pet",
        },
        type: {
          type: "string",
          enum: ["cat", "dog", "dragon", "alien"],
          description: "Type of pet: cat, dog, dragon, or alien",
        },
      },
      required: ["name", "type"],
    },
  },