memo-mcp

Instructions

Implementation Reference

• src/server/tools.ts:167-173 (handler)

  MCP tool handler function for 'createCategory' that calls the repository function and formats the MCP response.

  async (category) => {
    const newCategory = await createCategory(category)
    return {
      content: [{ text: JSON.stringify(newCategory), type: "text" }],
      structuredContent: { category: newCategory },
    }
  },

• src/schemas/categories.ts:12-16 (schema)

  Zod schema defining the input structure for the createCategory tool.

  export const CreateCategorySchema = z.object({
    name: z.string().min(1),
  })
  
  export type CreateCategory = z.infer<typeof CreateCategorySchema>

• src/server/tools.ts:159-174 (registration)

  Registration of the 'createCategory' tool with the MCP server, specifying schema, description, and handler.

  server.registerTool(
    "createCategory",
    {
      description: "Create a new category",
      inputSchema: CreateCategorySchema.shape,
      outputSchema: { category: CategorySchema },
      title: "Create Category",
    },
    async (category) => {
      const newCategory = await createCategory(category)
      return {
        content: [{ text: JSON.stringify(newCategory), type: "text" }],
        structuredContent: { category: newCategory },
      }
    },
  )

• src/repository/categories.ts:5-20 (helper)

  Repository function that performs the actual category creation logic using the database.

  export const createCategory = async (
    category: CreateCategory,
  ): Promise<Category> => {
    const now = new Date().toISOString()
  
    const newCategory: Category = {
      ...category,
      createdAt: now,
      id: nanoid(),
      updatedAt: now,
    }
    db.data.categories.push(newCategory)
    await db.write()
  
    return newCategory
  }