# Available Tools
## Query Operations
- **query**: Execute MongoDB queries
```javascript
{
collection: "users",
filter: { age: { $gt: 30 } },
projection: { name: 1, email: 1 },
limit: 20,
explain: "executionStats" // Optional
}
```
- **aggregate**: Run aggregation pipelines
```javascript
{
collection: "orders",
pipeline: [
{ $match: { status: "completed" } },
{ $group: { _id: "$customerId", total: { $sum: "$amount" } } }
],
explain: "queryPlanner" // Optional
}
```
- **count**: Count matching documents
```javascript
{
collection: "products",
query: { category: "electronics" }
}
```
## Write Operations
- **update**: Modify documents
```javascript
{
collection: "posts",
filter: { _id: "60d21b4667d0d8992e610c85" },
update: { $set: { title: "Updated Title" } },
upsert: false,
multi: false
}
```
- **insert**: Add new documents
```javascript
{
collection: "comments",
documents: [
{ author: "user123", text: "Great post!" },
{ author: "user456", text: "Thanks for sharing" }
]
}
```
- **createIndex**: Create collection indexes
```javascript
{
collection: "users",
indexes: [
{
key: { email: 1 },
unique: true,
name: "email_unique_idx"
}
]
}
```
## System Operations
- **serverInfo**: Get MongoDB server details
```javascript
{
includeDebugInfo: true // Optional
}
```
