### Field Filtering

Source: https://docs.tenable.com/security-center/api/index.htm

Appended to GET requests, this parameter allows you to specify which fields should be included in the response.

```APIDOC
## GET /resource?fields=field1,field2,...

### Description
Appended to GET requests, the response will only include the specified fields.

### Method
GET

### Endpoint
`/resource?fields=field1,field2,...`

### Query Parameters
- **fields** (string) - Required - Comma-separated list of fields to include in the response.
```

--------------------------------

### Expansion Data

Source: https://docs.tenable.com/security-center/api/index.htm

Appended to GET requests, this parameter allows you to include requested expansion data in the response.

```APIDOC
## GET /resource?expand=expansion1,expansion2,...

### Description
Appended to GET requests, the response will include the requested expansion data in addition to the normally returned data. Possible expansion data includes shares for shareable objects, IP data for assets, etc.

### Method
GET

### Endpoint
`/resource?expand=expansion1,expansion2,...`

### Query Parameters
- **expand** (string) - Required - Comma-separated list of expansion data to include in the response.
```

--------------------------------

### API Key Authentication

Source: https://docs.tenable.com/security-center/api/index.htm

Authenticate API requests using API keys provided in the 'x-apikey' header.

```APIDOC
## Authentication Header

### Description
Most Tenable.sc API REST calls require authentication via a unique set of API keys. The 'x-apikey' header element is used to pass your API keys in HTTP request messages.

### Header
`x-apikey: accesskey=ACCESS_KEY; secretkey=SECRET_KEY;`
```

--------------------------------

### Resource Retrieval

Source: https://docs.tenable.com/security-center/api/index.htm

Retrieve all available objects of a specific resource type. All non-expansion fields are included.

```APIDOC
## GET /resource

### Description
Returns all available objects of the specified resource type. Includes all non-expansion fields.

### Method
GET

### Endpoint
`/resource`
```

--------------------------------

### Resource Retrieval by ID

Source: https://docs.tenable.com/security-center/api/index.htm

Retrieve a specific object of a resource type by its ID. All non-expansion fields are included.

```APIDOC
## GET /resource/{id}

### Description
Returns the object with the specified ID for the given resource type. Includes all non-expansion fields.

### Method
GET

### Endpoint
`/resource/{id}`
```

--------------------------------

### Editable Fields Retrieval

Source: https://docs.tenable.com/security-center/api/index.htm

Retrieve all editable fields for a requested object.

```APIDOC
## GET /resource?editable

### Description
Returns all editable fields for the requested object.

### Method
GET

### Endpoint
`/resource?editable`
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.