MongoDB MCP Server を使い始める

I'll help you explain the schema of the "products" collection and provide a summary of the data. Let me interact with your MongoDB database through the MCP server to get this information.
  Ran `collection-schema` - MongoDB (MCP Server)
Now, let me fetch some sample data from the collection to provide you with a summary:
  Ran `find` - MongoDB (MCP Server)
Let's also get a count of the total number of documents in the collection:
  Ran `count` - MongoDB (MCP Server)
Let me get some aggregated statistics about the data:
  Ran `aggregate` - MongoDB (MCP Server)
  Ran `aggregate` - MongoDB (MCP Server)
Schema and Data Summary for the "products" Collection
Schema Overview
The "products" collection has the following schema:
1. _id: ObjectId - MongoDB's default unique identifier for each document
2. name: String - The name of the product
3. price: Number - The price of the product in USD
4. category: String - The category the product belongs to
5. quantity: Number - The available quantity of the product
6. inStock: Boolean - Flag indicating whether the product is in stock or not
Data Summary
Overall Statistics:
- Total number of products: 10
- Products in stock: 8
- Products out of stock: 2
- Categories Distribution:
- Electronics: 3 products (Laptop, Smartphone, Gaming Console)
- Audio: 2 products (Headphones, Bluetooth Speaker)
- Kitchen: 2 products (Coffee Maker, Blender)
- Furniture: 1 product (Office Chair)
- Home: 1 product (Desk Lamp)
- Wearables: 1 product (Fitness Tracker)
Price Range:
- Lowest priced item: $29.99 (Desk Lamp)
- Highest priced item: $1,299.99 (Laptop)
Inventory Status:
- Total inventory quantity: 153 items
- Average price across all products: approximately $313.99
- Products with zero quantity: 2 (Fitness Tracker, Blender) - these are marked as out of stock
Category Insights:
- Electronics has the highest average price at approximately $866.66
- Audio products have the highest total quantity (60 items)
- All zero-quantity products are correctly marked as out of stock (false)
This collection appears to be a simple product catalog for a store with various categories of merchandise, including pricing and inventory information

I'll help you find all products in the "products" collection that are out of stock and update them to be in stock. Let me interact with your MongoDB database through the MCP server to accomplish this.
First, let's find all products that are currently out of stock:
  Ran `find` - MongoDB (MCP Server)
Now I'll update these out-of-stock products to be in stock. For this example, I'll also set a reasonable quantity value for each item:
  Ran `update-many` - MongoDB (MCP Server)
Let's verify the updates by checking all products that were previously out of stock:
  Ran `find` - MongoDB (MCP Server)
Great! I've successfully:
1. Found all products that were out of stock (2 products):
   - Fitness Tracker (Wearables category)
   - Blender (Kitchen category)
2. Updated these products to:
   - Set them as in stock (inStock: true)
   - Set their quantity to 10 units each
The update has been completed successfully, and both products are now marked as in stock with 10 units available for each. The MongoDB update operation matched 2 documents and modified 2 documents, confirming that all out-of-stock products have been updated as requested.

I'll help you list all your MongoDB Atlas organizations, projects, and clusters. Let me retrieve that information for you.
  Ran `atlas-list-orgs` - MongoDB (MCP Server)
Now that I've found your organization, let me list all the projects under it.
  Ran `atlas-list-projects` - MongoDB (MCP Server)
Now, let me list all the clusters across all your projects:
  Ran `atlas-list-clusters` - MongoDB (MCP Server)
Let me get more detailed information about each of your clusters:
  Ran `atlas-inspect-cluster` - MongoDB (MCP Server)
Summary of Your Atlas Resources
Organization
- MongoDB (ID: <your-org-id>)
Projects (2)
- Sample Project (ID: <proj-id-1>)
- Test Project (ID: <proj-id-2>)
Clusters (2)
1. Cluster0 (in Sample Project)
   - Type: DEDICATED
   - Tier: M20
   - State: UPDATING
   - MongoDB Version: 8.1.1
   - Connection String: <connection-string-1>
2. Cluster1 (in Test Project)
   - Type: FREE
   - Tier: N/A
   - State: IDLE
   - MongoDB Version: 8.0.10
   - Connection String: <connection-string-2>

I'll help you create a new database user with read-only access to the "products" collection and add your current IP address to your cluster's access list. Let me do this step-by-step.
  Ran `atlas-list-orgs` - MongoDB (MCP Server)
First, I need to get information about your available Atlas projects to determine where to create the database user.
  Ran `atlas-list-projects` - MongoDB (MCP Server)
Now, let's check which clusters are available:
  Ran `atlas-list-clusters` - MongoDB (MCP Server)
Let's create a new database user with read-only access to the "products" collection in the Project with the Cluster. I'll create a user named "products_readonly":
  Ran `atlas-create-db-user` - MongoDB (MCP Server)
Great! Now let's add your current IP address to the cluster's access list:
   Ran `atlas-create-access-list` - MongoDB (MCP Server)
Let's verify the IP was added by checking the access list:
   Ran `atlas-inspect-access-list` - MongoDB (MCP Server)
Perfect! Now let's also verify the user was created by listing all database users:
   Ran `atlas-list-db-users` - MongoDB (MCP Server)
Summary of Actions Completed
1. Created a new database user:
  - Username: products_readonly
  - Password: <generated-password> (save this in a secure location)
  - Access: Read-only access  to the "products" collection in the "sample_store" database
  - Project: Project (ID: <proj-id>)
  - Cluster: Sample Cluster
2. Added your current IP address to the cluster's access list:
  - IP Address: <your-ip-address>
  - Project: Sample Project (ID: <proj-id>)
  - Comment: "Added for products_readonly user"
The new user can now connect to your Atlas cluster and read data from the "products" collection, but cannot modify it. Your IP address has been added to the access list, allowing you to connect to the cluster from your current location.

I'll first review the schema of the "products" collection to understand its structure, then generate a Javascript function to update the "inStock" field to false when a product reaches a quantity of 0.
  Ran `collection-schema` - MongoDB (MCP Server)
Now let me get some sample data from the collection to better understand the current state of the documents:
  Ran `find` - MongoDB (MCP Server)
Based on the schema and sample data, I'll now generate a Javascript function that:
- Monitors the products collection
- Updates the "inStock" field to false when a product's quantity reaches 0
- Provides appropriate error handling and logging
Here's the Javascript function:
```
/**
 * Updates the inStock field to false when a product's quantity reaches 0
 *
 * This function can be used in two ways:
 * 1. As a one-time update to sync all products (updateAllProducts)
 * 2. As an automated trigger after any update operation (setupUpdateTrigger)
 *
 * @param {Object} client - MongoDB client instance
 * @param {string} dbName - Database name (default: 'sample_store')
 * @param {string} collectionName - Collection name (default: 'products')
 * @returns {Promise} Promise that resolves when the operation completes
 */
async function updateProductStockStatus(client, dbName = 'sample_store', collectionName = 'products') {
try {
  // Get reference to the database and collection
  const db = client.db(dbName);
  const collection = db.collection(collectionName);
  // Find all products with quantity 0 but still marked as in stock
  const result = await collection.updateMany(
    { quantity: 0, inStock: true },
    { $set: { inStock: false } }
  );
  console.log(`Updated ${result.modifiedCount} products to out of stock`);
  return result;
} catch (err) {
  console.error('Error updating product stock status:', err);
  throw err;
  }
}
/**
 * Sets up a change stream to automatically update inStock status
 * when quantity changes to 0
 *
 * @param {Object} client - MongoDB client instance
 * @param {string} dbName - Database name (default: 'sample_store')
 * @param {string} collectionName - Collection name (default: 'products')
 * @returns {ChangeStream} The change stream object
 */
async function setupUpdateTrigger(client, dbName = 'sample_store', collectionName = 'products') {
... (truncated)