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

# Subscription

```ts theme={null}
type Subscription: 
  | {
  "tag": string;
  "type":   | "close"
     | "debug"
     | "error"
     | "finalized"
     | "network"
     | "safe";
  "zone": Zone;
 }
  | {
  "tag": string;
  "type": "block" | "pending";
  "zone": Zone;
 }
  | {
  "hash": string;
  "tag": string;
  "type": "transaction";
  "zone": Zone;
 }
  | {
  "filter": AccessesFilter;
  "tag": string;
  "type": "accesses";
  "zone": Zone;
 }
  | {
  "hash": string;
  "tag": string;
  "type": "qiTransaction";
  "zone": Zone;
 }
  | {
  "filter": EventFilter;
  "tag": string;
  "type": "event";
  "zone": Zone;
 }
  | {
  "filter": OrphanFilter;
  "tag": string;
  "type": "orphan";
  "zone": Zone;
};
```

The value passed to the AbstractProvider.\_getSubscriber | **AbstractProvider.\_getSubscriber** method.

Only developers sub-classing [**AbstractProvider**](/sdk/content/classes/AbstractProvider) will care about this, if they are
modifying a low-level feature of how subscriptions operate.

## Source

[providers/abstract-provider.ts:164](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/providers/abstract-provider.ts#L164)