> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nordicfinancialnews.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Field projection

> Select specific response fields to minimize payload size and speed up requests.

The Nordic Financial News API supports field projection on all list and detail endpoints. Use the `fields` query parameter to request only the fields you need. Selecting specific fields reduces payload size and optimizes database queries.

## How to use field projection

Pass a comma-separated list of field names in the `fields` query parameter:

```bash theme={"dark"}
curl -H "Authorization: Bearer $API_KEY" \
  "https://nordicfinancialnews.com/api/v1/articles?fields=id,title,published_at,content_type"
```

## Available fields by resource

The following fields can be requested with the `fields` parameter for each Nordic Financial News API resource type.

### Articles

`id`, `title`, `article_url`, `content_type`, `published_at`, `category`, `source`, `company_ids`, `country`

### Stories

`id`, `title`, `summary`, `published_at`, `article_count`, `article_ids`, `country`, `category`, `company_ids`

### Companies

`id`, `name`, `slug`, `ticker`, `exchange`

### Countries

`id`, `name`, `iso2_code`

### Exchanges

`id`, `name`, `mic_code`, `acronym`, `country`

### Indices

`id`, `name`, `symbol`, `pan_nordic`, `exchange`

### Categories

`id`, `name`

### Sources

`id`, `name`, `domain`, `country`

<Tip>
  Field projection is especially useful with [real-time updates](/guides/real-time-updates) to minimize bandwidth when polling frequently.
</Tip>