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Pins an item to a channel.

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

Pins an item to a channel. [POST /pins.add]

Name on the gateway: slack_api__pins_add · may change things.

Parameters

NameTypeDescription
channel requiredstringChannel to pin the item in.
timestampstringTimestamp of the message to pin.

How to call it

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__pins_add",
  "arguments": {
    "channel": "…"
  }
}

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"

Try asking

Use the pins an item to a channel. tool with channel set to ….

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