"""Slack MCP Server - Main entry point."""
import os
import sys
from dotenv import load_dotenv
from mcp.server.fastmcp import FastMCP
from .tools.channels import register_channel_tools
from .tools.messages import register_message_tools
from .tools.search import register_search_tools
from .tools.users import register_user_tools
# Load environment variables from .env file
load_dotenv()
# Create FastMCP server instance
mcp = FastMCP(
name="Slack MCP Server",
instructions="MCP server for comprehensive Slack API integration. "
"Enables AI assistants to interact with Slack workspaces including "
"channels, messages, DMs, search, and user management.",
)
def validate_environment() -> bool:
"""Validate that required environment variables are set."""
bot_token = os.getenv("SLACK_BOT_TOKEN")
user_token = os.getenv("SLACK_USER_TOKEN")
if not bot_token:
print(
"Warning: SLACK_BOT_TOKEN is not set. "
"Most Slack operations will not work.",
file=sys.stderr,
)
return False
if not user_token:
print(
"Note: SLACK_USER_TOKEN is not set. "
"Search functionality will not be available.",
file=sys.stderr,
)
return True
def register_all_tools() -> None:
"""Register all tool modules with the MCP server."""
register_channel_tools(mcp)
register_message_tools(mcp)
register_search_tools(mcp)
register_user_tools(mcp)
# Register all tools at module load time
register_all_tools()
def main() -> None:
"""Main entry point for the Slack MCP Server."""
validate_environment()
# Run the server using stdio transport (default for MCP)
mcp.run()
if __name__ == "__main__":
main()
