Go to Slack

conversations.invite

Invites users to a channel.

Supported token types:

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 invites 1-30 users to a public or private channel. The calling user must be a member of the channel.

Arguments

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

Argument Example Required Description
token xxxx-xxxxxxxxx-xxxx Required

Authentication token bearing required scopes.

channel C1234567890 Required

The ID of the public or private channel to invite user(s) to.

users W1234567890,U2345678901,U3456789012 Required

A comma separated list of user IDs. Up to 30 users may be listed.

This method supports application/json via HTTP POST. Present your token in your request's Authorization header. Learn more.

Response

Typical success response when an invitation is extended

{
    "ok": true,
    "channel": {
        "id": "C012AB3CD",
        "name": "general",
        "is_channel": true,
        "is_group": false,
        "is_im": false,
        "created": 1449252889,
        "creator": "W012A3BCD",
        "is_archived": false,
        "is_general": true,
        "unlinked": 0,
        "name_normalized": "general",
        "is_read_only": false,
        "is_shared": false,
        "is_ext_shared": false,
        "is_org_shared": false,
        "pending_shared": [],
        "is_pending_ext_shared": false,
        "is_member": true,
        "is_private": false,
        "is_mpim": false,
        "last_read": "1502126650.228446",
        "topic": {
            "value": "For public discussion of generalities",
            "creator": "W012A3BCD",
            "last_set": 1449709364
        },
        "purpose": {
            "value": "This part of the workspace is for fun. Make fun here.",
            "creator": "W012A3BCD",
            "last_set": 1449709364
        },
        "previous_names": [
            "specifics",
            "abstractions",
            "etc"
        ],
        "num_members": 23,
        "locale": "en-US"
    }
}

Typical error response when an invite is attempted on a conversation type that does not support it

{
    "ok": false,
    "error": "method_not_supported_for_channel_type"
}

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
channel_not_found

Value passed for channel was invalid.

user_not_found

Value passed for user was invalid.

cant_invite_self

Authenticated user cannot invite themselves to a channel.

not_in_channel

Authenticated user is not in the channel.

already_in_channel

Invited user is already in the channel.

is_archived

Channel has been archived.

cant_invite

User cannot be invited to this channel.

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.

ura_max_channels

URA is already in the maximum number of channels.

not_authed

No authentication token provided.

invalid_auth

Invalid authentication token.

account_inactive

Authentication token is for a deleted user or workspace.

no_permission

The workspace token used in this request does not have the permissions necessary to complete the request.

user_is_bot

This method cannot be called by a bot user.

user_is_ultra_restricted

This method cannot be called by a single channel guest.

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.