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Opens or resumes a direct message or multi-person direct message.

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

Opens or resumes a direct message or multi-person direct message. [POST /conversations.open]

Name on the gateway: slack_api__conversations_open · may change things.

Parameters

Name	Type	Description
`channel`	`string`	Resume a conversation by supplying an im or mpim's ID. Or provide the users…
`users`	`string`	Comma separated lists of users. If only one user is included, this creates a…
`return_im`	`boolean`	Boolean, indicates you want the full IM channel definition in the response.

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__conversations_open",
  "arguments": {}
}

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 opens or resumes a direct message or multi-person direct message. tool with channel set to ….