conversations.members

Retrieve members of a conversation.

Supported token types:

bot user

Expected scopes:

channels:read groups:read im:read mpim:read read

As part of the Conversations API, this method's required scopes depend on the type of channel-like object you're working with. For example, a corresponding channels: scope is required when working with public channels.

This Conversations API method returns a paginated list of members party to a conversation.

Arguments

This method has the URL https://slack.com/api/conversations.members and follows the Slack Web API calling conventions.

Present these parameters as part of an application/x-www-form-urlencoded querystring or POST body. application/json is not currently accepted.

Argument	Example	Required	Description
`token`	`xxxx-xxxxxxxxx-xxxx`	Required	Authentication token bearing required scopes.
`channel`	`C1234567890`	Required	ID of the conversation to retrieve members for
`cursor`	`dXNlcjpVMDYxTkZUVDI=`	Optional	Paginate through collections of data by setting the `cursor` parameter to a `next_cursor` attribute returned by a previous request's `response_metadata`. Default value fetches the first "page" of the collection. See pagination for more detail.
`limit`	`20`	Optional, default=100	The maximum number of items to return. Fewer than the requested number of items may be returned, even if the end of the users list hasn't been reached.

Response

Returns a list of user IDs belonging to the members in a conversation.

{
    "ok": true,
    "members": [
        "U023BECGF",
        "U061F7AUR",
        "W012A3CDE"
    ],
    "response_metadata": {
        "next_cursor": "e3VzZXJfaWQ6IFcxMjM0NTY3fQ==",
    }
}

Pagination

This method uses cursor-based pagination to make it easier to incrementally collect information. To begin pagination, specify a limit value under 1000. We recommend no more than 200 results at a time.

Responses will include a top-level response_metadata attribute containing a next_cursor value. By using this value as a cursor parameter in a subsequent request, along with limit, you may navigate through the collection page by virtual page.

See pagination for more information.

Errors

This table lists the expected errors that this method could return. However, other errors can be returned in the case where the service is down or other unexpected factors affect processing. Callers should always check the value of the ok params in the response.

Error	Description
`method_not_supported_for_channel_type`	This type of conversation cannot be used with this method.
`missing_scope`	The calling token is not granted the necessary scopes to complete this operation.
`channel_not_found`	Value passed for `channel` was invalid.
`invalid_limit`	Value passed for `limit` was invalid.
`invalid_cursor`	Value passed for `cursor` was invalid.
`fetch_members_failed`	Failed to fetch members for the conversation.
`not_authed`	No authentication token provided.
`invalid_auth`	Invalid authentication token.
`account_inactive`	Authentication token is for a deleted user or workspace.
`invalid_arg_name`	The method was passed an argument whose name falls outside the bounds of accepted or expected values. This includes very long names and names with non-alphanumeric characters other than `_`. If you get this error, it is typically an indication that you have made a very malformed API call.
`invalid_array_arg`	The method was passed a PHP-style array argument (e.g. with a name like `foo[7]`). These are never valid with the Slack API.
`invalid_charset`	The method was called via a `POST` request, but the `charset` specified in the `Content-Type` header was invalid. Valid charset names are: `utf-8` `iso-8859-1`.
`invalid_form_data`	The method was called via a `POST` request with `Content-Type` `application/x-www-form-urlencoded` or `multipart/form-data`, but the form data was either missing or syntactically invalid.
`invalid_post_type`	The method was called via a `POST` request, but the specified `Content-Type` was invalid. Valid types are: `application/x-www-form-urlencoded` `multipart/form-data` `text/plain`.
`missing_post_type`	The method was called via a `POST` request and included a data payload, but the request did not include a `Content-Type` header.
`team_added_to_org`	The workspace associated with your request is currently undergoing migration to an Enterprise Organization. Web API and other platform operations will be intermittently unavailable until the transition is complete.
`request_timeout`	The method was called via a `POST` request, but the `POST` data was either missing or truncated.

Warnings

This table lists the expected warnings that this method will return. However, other warnings can be returned in the case where the service is experiencing unexpected trouble.

Warning	Description
`missing_charset`	The method was called via a `POST` request, and recommended practice for the specified `Content-Type` is to include a `charset` parameter. However, no `charset` was present. Specifically, non-form-data content types (e.g. `text/plain`) are the ones for which `charset` is recommended.
`superfluous_charset`	The method was called via a `POST` request, and the specified `Content-Type` is not defined to understand the `charset` parameter. However, `charset` was in fact present. Specifically, form-data content types (e.g. `multipart/form-data`) are the ones for which `charset` is superfluous.