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

# GroupEvent

> Interface exported by @botmesh/core.

Defined in: [core/provider.ts:390](https://github.com/andresayac/botmesh/blob/main/packages/core/src/core/provider.ts#L390)

A group membership or settings change, as emitted on `bot.on('group', …)`.

## Properties

### chatId

```ts theme={null}
chatId: string;
```

Defined in: [core/provider.ts:391](https://github.com/andresayac/botmesh/blob/main/packages/core/src/core/provider.ts#L391)

***

### action

```ts theme={null}
action: "add" | "remove" | "promote" | "demote" | "update";
```

Defined in: [core/provider.ts:392](https://github.com/andresayac/botmesh/blob/main/packages/core/src/core/provider.ts#L392)

***

### participants

```ts theme={null}
participants: string[];
```

Defined in: [core/provider.ts:393](https://github.com/andresayac/botmesh/blob/main/packages/core/src/core/provider.ts#L393)

***

### actor?

```ts theme={null}
actor?: string;
```

Defined in: [core/provider.ts:394](https://github.com/andresayac/botmesh/blob/main/packages/core/src/core/provider.ts#L394)


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