Manage channels, conversations, users and team collaboration within Slack. Send messages, monitor activity and automate communication workflows across workspaces.
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Encrypted at rest, isolated from the model
Resolved from an AES-256-GCM vault at the moment of the call and attached to the request — the model never sees the secrets.
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Check server readiness and basic connectivity.
Post a message to a Slack channel or direct message with text and optional blocks.
Get message history from a channel with optional filtering.
Edit an existing message.
Delete a message.
Full-text search across workspace messages.
Post a reply in a message thread.
Browse channels in the workspace. Maps to conversations.list API.
Create a new channel.
Archive or unarchive a channel.
Get metadata for a channel.
Invite users to a channel.
Search files across workspace.
List all channels with metadata.
Search for a user by name, email, or ID.
Extract thread metadata.
Get workspace roster.
Get workspace metadata.
Get user presence status.
Slack MCP Server is open source. Tell the MewCP maintainers.
One endpoint, the same key, whichever client you use.
~/Library/Application Support/Claude/claude_desktop_config.json (Mac) · %APPDATA%\Claude\claude_desktop_config.json (Windows)
Replace API_KEY with your own key.
Already have an "mcpServers" section in your config? Just add the server entry inside it.
Discovery, routing, credentials, tool scoping and execution logs all happen at the gateway→connections stay ACTIVE with no work from you
Slack runs through a gateway that holds the credentials, scopes the access and records every call.
Managed auth, hosted MCP servers, and every Slack tool your agent needs.
Free to start.
