Starts a Real Time Messaging session.

An MCP tool from the Slack API server, hosted on mcp.hjlabs.in.

Starts a Real Time Messaging session. [GET /rtm.connect]

Name on the gateway: slack_api__rtm_connect · read-only.

Parameters

Name	Type	Description
`token` required	`string`	Authentication token. Requires scope: rtm:stream
`batch_presence_aware`	`boolean`	Batch presence deliveries via subscription. Enabling changes the shape of…
`presence_sub`	`boolean`	Only deliver presence events when requested by subscription. See presence…

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments

{
  "name": "slack_api__rtm_connect",
  "arguments": {
    "token": "…"
  }
}

Or connect the Slack API server directly, which lists 174 tools including this one:

Run in your terminal

claude mcp add --transport http hj-slack-api https://mcp.hjlabs.in/mcp/slack-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Use the starts a real time messaging session. tool with token set to ….