Tripo MCP Server

Instructions

Implementation Reference

• src/server.py:467-499 (handler)

  The handler function for 'get_polyhaven_categories' tool. It checks if PolyHaven is enabled, sends a command to Blender to retrieve categories for the given asset_type, formats the response by sorting categories by asset count, and returns a formatted string list. The @mcp.tool() decorator handles registration.
  @mcp.tool() def get_polyhaven_categories(ctx: Context, asset_type: str = "hdris") -> str: """ Get a list of categories for a specific asset type on Polyhaven. Parameters: - asset_type: The type of asset to get categories for (hdris, textures, models, all) """ try: blender = get_blender_connection() if not _polyhaven_enabled: return "PolyHaven integration is disabled. Select it in the sidebar in BlenderMCP, then run it again." result = blender.send_command( "get_polyhaven_categories", {"asset_type": asset_type} ) if "error" in result: return f"Error: {result['error']}" # Format the categories in a more readable way categories = result["categories"] formatted_output = f"Categories for {asset_type}:\n\n" # Sort categories by count (descending) sorted_categories = sorted(categories.items(), key=lambda x: x[1], reverse=True) for category, count in sorted_categories: formatted_output += f"- {category}: {count} assets\n" return formatted_output except Exception as e: logger.error(f"Error getting Polyhaven categories: {str(e)}") return f"Error getting Polyhaven categories: {str(e)}"
• src/server.py:467-467 (registration)

  The @mcp.tool() decorator registers the get_polyhaven_categories function as an MCP tool.
  @mcp.tool()
• src/server.py:468-473 (schema)

  Input schema defined by function parameters: asset_type (str, default 'hdris'). Output: str (formatted categories list). Documented in docstring.
  def get_polyhaven_categories(ctx: Context, asset_type: str = "hdris") -> str: """ Get a list of categories for a specific asset type on Polyhaven. Parameters: - asset_type: The type of asset to get categories for (hdris, textures, models, all)
• src/server.py:247-283 (helper)

  Helper function used by the tool to get Blender connection and update _polyhaven_enabled status, which is checked in the handler.
  def get_blender_connection(): """Get or create a persistent Blender connection""" global _blender_connection, _polyhaven_enabled, _tripo_apikey # Add _polyhaven_enabled to globals # If we have an existing connection, check if it's still valid if _blender_connection is not None: try: # First check if PolyHaven is enabled by sending a ping command result = _blender_connection.send_command("get_tripo_apikey") _tripo_apikey = result.get("api_key", "") result = _blender_connection.send_command("get_polyhaven_status") # Store the PolyHaven status globally _polyhaven_enabled = result.get("enabled", False) return _blender_connection except Exception as e: # Connection is dead, close it and create a new one logger.warning(f"Existing connection is no longer valid: {str(e)}") try: _blender_connection.disconnect() except: pass _blender_connection = None # Create a new connection if needed if _blender_connection is None: _blender_connection = BlenderConnection(host="localhost", port=9876) if not _blender_connection.connect(): logger.error("Failed to connect to Blender") _blender_connection = None raise Exception( "Could not connect to Blender. Make sure the Blender addon is running." ) logger.info("Created new persistent connection to Blender") return _blender_connection