rtm.connect

View other methods

Starts a Real Time Messaging session.

Reference docs Tester

Facts

Method access

HTTP

JavaScript

Python

Java

HTTP

GEThttps://slack.com/api/rtm.connect

Bolt for Java

app.client().rtmConnect

Bolt for Python

app.client.rtm_connect

Bolt for JavaScript

app.client.rtm.connect

Required scopes

User tokens

Legacy bot tokensbot

Content types

application/x-www-form-urlencoded

Rate limits

Tier 1

Arguments

Required arguments

token

token

·Required

Authentication token bearing required scopes. Tokens should be passed as an HTTP Authorization header or alternatively, as a POST parameter.

Example

xxxx-xxxxxxxxx-xxxx

Optional arguments

batch_presence_aware

boolean

·Optional

Batch presence deliveries via subscription. Enabling changes the shape of presence_change events. See batch presence.

Default

Example

1

presence_sub

boolean

·Optional

Only deliver presence events when requested by subscription. See presence subscriptions.

Default

1

Example

true

Usage info

This method begins a Real Time Messaging API session and reserves your application a specific URL with which to connect via websocket.

Unlike rtm.start, this method is focused only on connecting to the RTM API.

Use this method in conjunction with other Web API methods like channels.list, users.list, and team.info to build a full picture of the team or workspace you're connecting on behalf of.

Please consult the RTM API documentation for full details on using the RTM API.

New Slack apps may not use any Real Time Messaging API method. Create a classic app and use the V1 Oauth flow to use RTM.

For most applications, Socket Mode is a better way to communicate with Slack.

This method returns a WebSocket Message Server URL and limited information about the team:

The url property contains a WebSocket Message Server URL. Connecting to this URL will initiate a Real Time Messaging session. These URLs are only valid for 30 seconds, so connect quickly!

The self property contains a small amount of information concerning the connecting user — an id and their name.

The team attribute also houses brief information about the team, including its id, name, domain, and if it's part of an Enterprise Grid, the corresponding enteprise_id.

Example responses

Common successful response

Typical success response

{
    "ok": true,
    "self": {
        "id": "U4X318ZMZ",
        "name": "robotoverlord"
    },
    "team": {
        "domain": "slackdemo",
        "id": "T2U81E2FP",
        "name": "SlackDemo"
    },
    "url": "wss://..."
}

Common error response

Typical error response

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

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
`migration_in_progress`	Team is being migrated between servers. See the `team_migration_started` event documentation for details.
`access_denied`	Access to a resource specified in the request is denied.
`account_inactive`	Authentication token is for a deleted user or workspace when using a `bot` token.
`deprecated_endpoint`	The endpoint has been deprecated.
`ekm_access_denied`	Administrators have suspended the ability to post a message.
`enterprise_is_restricted`	The method cannot be called from an Enterprise.
`invalid_auth`	Some aspect of authentication cannot be validated. Either the provided token is invalid or the request originates from an IP address disallowed from making the request.
`method_deprecated`	The method has been deprecated.
`missing_scope`	The token used is not granted the specific scope permissions required to complete this request.
`not_allowed_token_type`	The token type used in this request is not allowed.
`not_authed`	No authentication token provided.
`no_permission`	The workspace token used in this request does not have the permissions necessary to complete the request. Make sure your app is a member of the conversation it's attempting to post a message to.
`org_login_required`	The workspace is undergoing an enterprise migration and will not be available until migration is complete.
`token_expired`	Authentication token has expired
`token_revoked`	Authentication token is for a deleted user or workspace or the app has been removed when using a `user` token.
`two_factor_setup_required`	Two factor setup is required.
`accesslimited`	Access to this method is limited on the current network
`fatal_error`	The server could not complete your operation(s) without encountering a catastrophic error. It's possible some aspect of the operation succeeded before the error was raised.
`internal_error`	The server could not complete your operation(s) without encountering an error, likely due to a transient issue on our end. It's possible some aspect of the operation succeeded before the error was raised.
`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_arguments`	The method was either called with invalid arguments or some detail about the arguments passed is invalid, which is more likely when using complex arguments like blocks or attachments.
`invalid_array_arg`	The method was passed an array as an argument. Please only input valid strings.
`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/json` `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.
`ratelimited`	The request has been ratelimited. Refer to the `Retry-After` header for when to retry the request.
`request_timeout`	The method was called via a `POST` request, but the `POST` data was either missing or truncated.
`service_unavailable`	The service is temporarily unavailable
`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.

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.

API response

URL

POST body

Submit your arguments to see the API response