pm-cse

pm-cse

Postman CSE toolkit MCP server. Currently provides Slack integration with plans to expand to Atlassian, Salesforce, Looker, and more.

Install

npm install -g pm-cse

Or run directly:

npx pm-cse

MCP Configuration

Add to your MCP client config (Claude Desktop, Cursor, etc.):

{
  "mcpServers": {
    "pm-cse": {
      "command": "npx",
      "args": ["-y", "pm-cse"]
    }
  }
}

If using a direct Slack token:

{
  "mcpServers": {
    "pm-cse": {
      "command": "npx",
      "args": ["-y", "pm-cse"],
      "env": {
        "SLACK_TOKEN": "xoxc-..."
      }
    }
  }
}

Tools

Read

Tool	Description
slack_search_channels	Find channels by name
slack_search_messages	Search messages by keyword, channel, user, time range
slack_fetch_thread	Get complete thread replies by timestamp
slack_fetch_channel_history	Get recent messages from a channel
slack_search_files	Search files by name, type, channel, user
slack_fetch_recent_messages	Fetch recent messages across all channels
slack_search_users	Find users by name, email, title, department
slack_get_user_profile	Get detailed profile for a user
slack_list_unreads	List all channels/DMs with unread messages

Write

Tool	Description
slack_send_message	Send a message to a channel or DM
slack_schedule_message	Schedule a message for future delivery
slack_add_reaction	Add an emoji reaction to a message
slack_remove_reaction	Remove an emoji reaction
slack_update_message	Edit a message you sent
slack_delete_message	Delete a message you sent
slack_upload_file	Upload a text file or code snippet
slack_pin_message	Pin a message to a channel
slack_mark_as_read	Mark a conversation as read

Authentication

Three authentication methods are supported, tried in order:

• Direct token -- Set SLACK_TOKEN or SLACK_BOT_TOKEN env var
• Okta auth flow -- Uses local Okta Verify app via auth.okta.rip (no API key needed)
• WebAuthn worker -- Uses webauthn.kepler.rip (requires WEBAUTHN_API_KEY env var)

See AGENTS.md for full authentication details.

Development

git clone <repo-url>
cd slack-mcp
npm install
npm run build
npm run dev       # Run with tsx (hot reload)
npm run start     # Run compiled version