---
title: "client.Chats"
description: "Every method in this namespace: its signature, its parameters, what it returns and an example."
url: "https://nextmail.sh/docs/csharp/reference/chats"
area: "C#"
category: "Reference"
---

# client.Chats

Every method in this namespace: its signature, its parameters, what it returns and an example.

## Methods

The conversations held with the assistant in the app: list and search them, read one, rename it and delete it. Each person reaches only their own.

### `Chats.ListAsync`

List the assistant chats

```csharp
Task<Page> ListAsync(
    string? q = null,
    string? sort = null,
    int? limit = null,
    string? cursor = null,
    string? apiKey = null,
    CancellationToken cancellationToken = default)
```

Returns one page of the conversations held with the assistant in the app, newest first, as its Chats page lists them, each with its title, how many messages it holds and when it last changed.

Each person reaches only their own chats: an API key reaches the chats of the workspace owner, and an access token reaches the chats of the person who connected it. A key or token limited to particular addresses or domains is 422 `capability_unsupported`.

Scopes: `threads:read`.

**Parameters**

- `q` (`string?`): Searches the titles.
- `sort` (`string?`): `newest` (the default) or `oldest` by the last change, or `title`, as in `Nextmail\Constants\ChatSorts`. A cursor carries on in the order it was handed out in.
- `limit` (`int?`): Page size, from 1 to 100. The server defaults to 25.
- `cursor` (`string?`): The `nextCursor` of the previous page. Leave it out for the first page.
- `apiKey` (`string?`): Overrides the client's API key for this call only.
- `cancellationToken` (`CancellationToken`): Cancels the request.

**Returns**

A `Page` with `items`, `hasMore` and `nextCursor`. Each item has `id`, `title`, `kind`, `messageCount` and `updatedAt`.

**Example**

```csharp
using Nextmail.Constants;

var page = await client.Chats.ListAsync(q: "invoices", sort: ChatSorts.Newest, limit: 20);

foreach (var chat in page)
{
    Console.WriteLine($"{chat["title"]} ({chat["messageCount"]} messages)");
}

if (page.HasMore)
{
    var next = await client.Chats.ListAsync(q: "invoices", cursor: page.NextCursor);

    Console.WriteLine($"{next.Items[0]?["title"]?.ToString() ?? "nothing more"}");
}
```

**Notes**

- A cursor that names nothing in this list is 400 `invalid_cursor`.

Also available in: API [`GET /chats`](https://nextmail.sh/docs/api/reference/chats#get-chats); TypeScript [`nextmail.chats.list()`](https://nextmail.sh/docs/sdk/reference/chats#list); Python [`chats.list()`](https://nextmail.sh/docs/python/reference/chats#list); Ruby [`chats.list`](https://nextmail.sh/docs/ruby/reference/chats#list); PHP [`chats->list`](https://nextmail.sh/docs/php/reference/chats#list); Go [`Chats.List`](https://nextmail.sh/docs/go/reference/chats#list); Java [`chats().list`](https://nextmail.sh/docs/java/reference/chats#list); CLI [`nextmail chats list`](https://nextmail.sh/docs/cli/reference/chats#chats-list).

### `Chats.ListAllAsync`

Collect every chat into one object

```csharp
Task<IReadOnlyList<JsonObject>> ListAllAsync(
    string? q = null,
    string? sort = null,
    int? limit = null,
    string? cursor = null,
    string? apiKey = null,
    CancellationToken cancellationToken = default)
```

Walks every page of `ListAsync` and returns every chat, in the order `sort:` names. One request per page, with the same filters on each.

Scopes: `threads:read`.

**Parameters**

- `q` (`string?`): Searches the titles.
- `sort` (`string?`): `newest` (the default) or `oldest` by the last change, or `title`, as in `Nextmail\Constants\ChatSorts`. A cursor carries on in the order it was handed out in.
- `limit` (`int?`): Page size for each request, from 1 to 100. The server defaults to 25.
- `cursor` (`string?`): Starts the walk after this cursor instead of the first page.
- `apiKey` (`string?`): Overrides the client API key for every page of this walk.
- `cancellationToken` (`CancellationToken`): Cancels the request.

**Returns**

A list of `JsonObject` items holding every chat.

**Example**

```csharp
var chats = await client.Chats.ListAllAsync(q: "invoices");

Console.WriteLine($"{string.Join(Environment.NewLine, chats.Select(row => row?["title"]))}");
```

**Notes**

- If any page fails the call throws and the rows already fetched are discarded.

Also available in: API [`GET /chats`](https://nextmail.sh/docs/api/reference/chats#get-chats); TypeScript [`nextmail.chats.listAll()`](https://nextmail.sh/docs/sdk/reference/chats#listAll); Python [`chats.list_all()`](https://nextmail.sh/docs/python/reference/chats#listAll); Ruby [`chats.list_all`](https://nextmail.sh/docs/ruby/reference/chats#listAll); PHP [`chats->listAll`](https://nextmail.sh/docs/php/reference/chats#listAll); Go [`Chats.ListAll`](https://nextmail.sh/docs/go/reference/chats#listAll); Java [`chats().listAll`](https://nextmail.sh/docs/java/reference/chats#listAll).

### `Chats.IterateAsync`

Stream the chats one at a time

```csharp
IAsyncEnumerable<JsonObject> IterateAsync(
    string? q = null,
    string? sort = null,
    int? limit = null,
    string? cursor = null,
    string? apiKey = null,
    CancellationToken cancellationToken = default)
```

Returns an `IAsyncEnumerable<JsonObject>` that yields one chat at a time, in the order `sort:` names, and requests the next page only once the current one is drained. Nothing is fetched until you consume it, and breaking out of the loop stops the requests.

Scopes: `threads:read`.

**Parameters**

- `q` (`string?`): Searches the titles.
- `sort` (`string?`): `newest` (the default) or `oldest` by the last change, or `title`, as in `Nextmail\Constants\ChatSorts`. A cursor carries on in the order it was handed out in.
- `limit` (`int?`): Page size for each request, from 1 to 100. The server defaults to 25.
- `cursor` (`string?`): Starts the walk after this cursor instead of the first page.
- `apiKey` (`string?`): Overrides the client API key for every page of this walk.
- `cancellationToken` (`CancellationToken`): Cancels the request.

**Returns**

An `IAsyncEnumerable<JsonObject>` that yields one chat per step.

**Example**

```csharp
using Nextmail.Constants;

await foreach (var chat in client.Chats.IterateAsync(sort: ChatSorts.Title))
{
    Console.WriteLine($"{chat["title"]} {chat["updatedAt"]}");
}
```

**Notes**

- Each page is one request, so a long walk makes many.

Also available in: API [`GET /chats`](https://nextmail.sh/docs/api/reference/chats#get-chats); TypeScript [`nextmail.chats.iterate()`](https://nextmail.sh/docs/sdk/reference/chats#iterate); Python [`chats.iterate()`](https://nextmail.sh/docs/python/reference/chats#iterate); Ruby [`chats.iterate`](https://nextmail.sh/docs/ruby/reference/chats#iterate); PHP [`chats->iterate`](https://nextmail.sh/docs/php/reference/chats#iterate); Go [`Chats.Iterate`](https://nextmail.sh/docs/go/reference/chats#iterate); Java [`chats().iterate`](https://nextmail.sh/docs/java/reference/chats#iterate).

### `Chats.GetAsync`

Retrieve a chat

```csharp
Task<JsonObject> GetAsync(
    string id,
    string? apiKey = null,
    CancellationToken cancellationToken = default)
```

Returns one chat with the assistant by its id: its title, how many messages it holds and when it last changed.

Each person reaches only their own chats: an API key reaches the chats of the workspace owner, and an access token reaches the chats of the person who connected it. A key or token limited to particular addresses or domains is 422 `capability_unsupported`.

Scopes: `threads:read`.

**Parameters**

- `id` (`string`, required): The chat id from `ListAsync`.
- `apiKey` (`string?`): Overrides the client's API key for this call only.
- `cancellationToken` (`CancellationToken`): Cancels the request.

**Returns**

A `JsonObject` with `id`, `title`, `kind`, `messageCount` and `updatedAt`.

**Example**

```csharp
var chat = await client.Chats.GetAsync("8f3c2a71-5e9d-4b06-a1c4-7d2e9f0b3a65");

Console.WriteLine($"{chat["title"]}, last changed {chat["updatedAt"]}");
```

**Notes**

- An unknown id is a 404.

Also available in: API [`GET /chats/{id}`](https://nextmail.sh/docs/api/reference/chats#get-chats-id); TypeScript [`nextmail.chats.get()`](https://nextmail.sh/docs/sdk/reference/chats#get); Python [`chats.get()`](https://nextmail.sh/docs/python/reference/chats#get); Ruby [`chats.get`](https://nextmail.sh/docs/ruby/reference/chats#get); PHP [`chats->get`](https://nextmail.sh/docs/php/reference/chats#get); Go [`Chats.Get`](https://nextmail.sh/docs/go/reference/chats#get); Java [`chats().get`](https://nextmail.sh/docs/java/reference/chats#get); CLI [`nextmail chats get`](https://nextmail.sh/docs/cli/reference/chats#chats-get).

### `Chats.RenameAsync`

Rename a chat

```csharp
Task<JsonObject> RenameAsync(
    string id,
    string title,
    string? apiKey = null,
    CancellationToken cancellationToken = default)
```

Gives a chat with the assistant a new title, up to 120 characters, and returns the chat as it is now.

Each person reaches only their own chats: an API key reaches the chats of the workspace owner, and an access token reaches the chats of the person who connected it. A key or token limited to particular addresses or domains is 422 `capability_unsupported`.

Scopes: `threads:write`.

**Parameters**

- `id` (`string`, required): The chat id from `ListAsync`.
- `title` (`string`, required): The new title, from 1 to 120 characters.
- `apiKey` (`string?`): Overrides the client's API key for this call only.
- `cancellationToken` (`CancellationToken`): Cancels the request.

**Returns**

The same object as `Chats.GetAsync`, with the new `title`.

**Example**

```csharp
var chat = await client.Chats.RenameAsync("8f3c2a71-5e9d-4b06-a1c4-7d2e9f0b3a65", "Quarterly invoices");

Console.WriteLine($"{chat["title"]}");
```

**Notes**

- An unknown id is a 404.

Also available in: API [`PATCH /chats/{id}`](https://nextmail.sh/docs/api/reference/chats#patch-chats-id); TypeScript [`nextmail.chats.rename()`](https://nextmail.sh/docs/sdk/reference/chats#rename); Python [`chats.rename()`](https://nextmail.sh/docs/python/reference/chats#rename); Ruby [`chats.rename`](https://nextmail.sh/docs/ruby/reference/chats#rename); PHP [`chats->rename`](https://nextmail.sh/docs/php/reference/chats#rename); Go [`Chats.Rename`](https://nextmail.sh/docs/go/reference/chats#rename); Java [`chats().rename`](https://nextmail.sh/docs/java/reference/chats#rename); CLI [`nextmail chats rename`](https://nextmail.sh/docs/cli/reference/chats#chats-rename).

### `Chats.DeleteAsync`

Delete a chat

```csharp
Task<JsonObject> DeleteAsync(
    string id,
    string? apiKey = null,
    CancellationToken cancellationToken = default)
```

Deletes a chat with the assistant and every message in it, for good. Nothing the assistant did in the mailbox is undone.

Each person reaches only their own chats: an API key reaches the chats of the workspace owner, and an access token reaches the chats of the person who connected it. A key or token limited to particular addresses or domains is 422 `capability_unsupported`.

Scopes: `threads:write`.

**Parameters**

- `id` (`string`, required): The chat id from `ListAsync`.
- `apiKey` (`string?`): Overrides the client's API key for this call only.
- `cancellationToken` (`CancellationToken`): Cancels the request.

**Returns**

A `JsonObject` with `object` set to `chat`, the `id` and `deleted` set to true.

**Example**

```csharp
try
{
    await client.Chats.DeleteAsync("8f3c2a71-5e9d-4b06-a1c4-7d2e9f0b3a65");
}
catch (NextmailApiException error) when (error.IsNotFound)
{
    Console.WriteLine("Already gone");
}
```

**Notes**

- An unknown id is a 404, and so is a second call for the same chat.
- The SDK does not retry it.

Also available in: API [`DELETE /chats/{id}`](https://nextmail.sh/docs/api/reference/chats#delete-chats-id); TypeScript [`nextmail.chats.delete()`](https://nextmail.sh/docs/sdk/reference/chats#delete); Python [`chats.delete()`](https://nextmail.sh/docs/python/reference/chats#delete); Ruby [`chats.delete`](https://nextmail.sh/docs/ruby/reference/chats#delete); PHP [`chats->delete`](https://nextmail.sh/docs/php/reference/chats#delete); Go [`Chats.Delete`](https://nextmail.sh/docs/go/reference/chats#delete); Java [`chats().delete`](https://nextmail.sh/docs/java/reference/chats#delete); CLI [`nextmail chats delete`](https://nextmail.sh/docs/cli/reference/chats#chats-delete).