Slack MCP Server (MCP server) and Slack (Claude Code plugin) give an agent the same capability through two different install surfaces. Which to use is about the interface, not a feature you give up either way.
Search and post to Slack from the agent, officially
Search channels and threads from inside Claude Code
Slack MCP Server (MCP server) and Slack (Claude Code plugin) give an agent the same capability through two different install surfaces. Which to use is about the interface, not a feature you give up either way. Slack MCP Server: Search and post to Slack from the agent, officially. Slack: Search channels and threads from inside Claude Code. Slack MCP Server has no adoption data tracked yet. Slack has no adoption data tracked yet.
claude mcp add --transport http slack https://mcp.slack.com/mcp
"slack": { "url": "https://mcp.slack.com/mcp" }Hosted by Slack, GA since February 2026. A workspace admin has to approve the connection before it works.
/plugin marketplace add anthropics/claude-plugins-official /plugin install slack@claude-plugins-official
The official marketplace registers itself automatically on Claude Code's first interactive launch, so the marketplace-add step is often a no-op; running it is still safe and works on any machine.
Slack MCP Server (MCP server) and Slack (Claude Code plugin) give an agent the same capability through two different install surfaces. Which to use is about the interface, not a feature you give up either way.
Search and post to Slack from the agent, officially. It is a MCP server, categorized as mcp servers.
Search channels and threads from inside Claude Code. It is a Claude Code plugin, categorized as productivity.
Yes. Both are free.
Neither has adoption data tracked yet.