Arrays of members
found in API methods will become truncated beginning December 1, 2017.
members
continues to decrease regularly. As of March 2018, the limit is set to 500 results. Use conversations.members
for channels with large memberships.
Initially, Slack will limit members
to the first 1,500 users and then gradually lower the number of users returned. You should expect API methods will cease returning members
entirely at some point in the future. If you rely on the members
array, you should instead begin using conversations.members
for a full list of members.
As Slack teams continue to grow in size, returning the full members
array in these methods is no longer practical or performant, for the Slack APIs or developers. The conversations.members
method will allow you to request a list of members at a time that makes sense for your app and should keep these method calls nice and zippy.
Previously, calling a method such as rtm.start
would include a members
array that listed all of the members of a workspace or channel. But some Slack workspaces and channels now have tens of thousands of team members, which means these methods can be slow to be delivered and difficult for developers to manage.
Starting December 1, 2017, we will begin truncating the members
array to 1,500 members. This number will then be lowered over time until, eventually, the members
array will cease to be returned in these methods.
At the time of the last update in March 2018, members
results are capped at 500.
If any members
array is truncated, you'll receive a member_list_truncated
warning in the response's response_metadata
:
{
// all other parts of the response
"response_metadata": {
"warnings": [
"member_list_truncated"
]
}
}
If you need a list of team members in a channel, please begin using the recently introduced conversations.members
method, which includes a pagination cursor. See pagination for more detail.
If your app isn't using the members
array returned by any of the above methods, you don't need to change a thing!
If your app relies on the members
array returned by these methods, it will no longer reliably return a full list of team members starting December 1, 2017. You should begin using the conversations.members method to get a complete list of team members.
The members
array will be truncated starting December 1, 2017.
As of March, 2018 the members
array is capped at 500 and will continue to decline.
Please contact us if you have any concerns at feedback@slack.com.