{"version":"2.1.311","anchor":"slack-mcp-server-gets-a-channel-posting-instruction","canonical_anchor":"slack-mcp-server-gets-a-channel-posting-instruction","heading":"Claude checks a Slack channel's purpose before posting where you did not say","tier":"notice","area":"MCP","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.311\/e\/slack-mcp-server-gets-a-channel-posting-instruction","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.311","markdown":"### Claude checks a Slack channel's purpose before posting where you did not say\n\nWith the Slack MCP server, Claude is now told to read a channel's topic and description before posting to a channel you did not name\n\n**What**\n\nMCP servers are outside programs that give Claude extra tools. Slack's MCP server, at `https:\/\/mcp.slack.com`, lets Claude post messages to Slack. Claude is now told that before posting a new message to a channel you did not name, it should read that channel's topic and description.\n\n**Why**\n\nThis changes how Claude behaves when it posts to Slack. It is meant to make Claude check a channel's purpose before it posts there.\n\n- Area: MCP\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 2\/5\n- Scope: individual\n- Heads-up: no"}