slack-pat-mcp

MCP server for personal Slack access using user tokens (xoxp-). 4 tools covering channels, DMs, chat, search, and user management.

Install

uvx slack-pat-mcp

Claude Code Config

"slack": {
    "command": "uvx",
    "args": ["slack-pat-mcp"],
    "env": {
        "SLACK_USER_TOKEN": "xoxp-...",
        "SLACK_TEAM_ID": "T..."
    }
}

Tools

• slack_channel — list, list_dms, history, thread, open_dm
• slack_chat — post, update, delete, react_add, react_remove
• slack_search — search messages with Slack syntax
• slack_users — list, info, profile, usergroups, set_status
• slack_drafts — create, list, update, delete; text is Slack mrkdwn (bold/italic/strike/code, lists, quotes, code blocks, links, mentions, emoji), converted to rich_text (needs browser session keys below)

Drafts (optional)

Slack's drafts API rejects xoxp tokens, so drafts use your browser session. In app.slack.com DevTools:

• SLACK_XOXC_TOKEN — Console: Object.values(JSON.parse(localStorage.localConfig_v2).teams).map(t => [t.name, t.token])
• SLACK_D_COOKIE — Application → Cookies → https://app.slack.com → d (copy as-is, URL-encoded)

These are unofficial and stop working when you sign out of Slack in that browser.

Required Slack OAuth Scopes (User Token)

channels:read, channels:history, groups:read, groups:history, im:read, im:history, im:write, mpim:read, mpim:history, mpim:write, chat:write, reactions:read, reactions:write, search:read, users:read, users:read.email, users.profile:read, usergroups:read