Blender MCP for Antigravity

"""Binary-mode MCP server - exact byte control""" import sys import os import json def log(msg): sys.stderr.write(f"[BIN] {msg}\n") sys.stderr.flush() # Switch stdout to binary mode on Windows if sys.platform == 'win32': import msvcrt msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY) msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY) # Get binary streams stdin_bin = sys.stdin.buffer stdout_bin = sys.stdout.buffer def read_line(): """Read a line from binary stdin""" line = b'' while True: ch = stdin_bin.read(1) if not ch: return None if ch == b'\n': break if ch != b'\r': # Skip carriage return line += ch return line.decode('utf-8') if line else None def write_response(msg): """Write JSON response as exact bytes""" body = json.dumps(msg, separators=(',', ':')) data = body.encode('utf-8') + b'\n' log(f"Writing {len(data)} bytes: {data[:80]}") stdout_bin.write(data) stdout_bin.flush() log("=== Binary MCP Server ===") # Initialize log("Waiting for initialize...") line = read_line() log(f"Got line: {line[:100] if line else 'None'}") if line: request = json.loads(line) if request.get('method') == 'initialize': write_response({ "jsonrpc": "2.0", "id": request.get("id"), "result": { "protocolVersion": "2024-11-05", "capabilities": {"tools": {}}, "serverInfo": {"name": "binary-test", "version": "1.0.0"} } }) log("Waiting for initialized...") line = read_line() log(f"Got: {line[:100] if line else 'None'}") log("Main loop...") while True: line = read_line() if not line: log("EOF") break msg = json.loads(line) log(f"Got: {json.dumps(msg)[:80]}") method = msg.get('method', '') msg_id = msg.get('id') if method == 'tools/list': write_response({ "jsonrpc": "2.0", "id": msg_id, "result": { "tools": [{ "name": "hello", "description": "Say hello", "inputSchema": { "type": "object", "properties": {"name": {"type": "string"}}, "required": ["name"] } }] } }) elif method == 'tools/call': name = msg.get('params', {}).get('arguments', {}).get('name', 'World') write_response({ "jsonrpc": "2.0", "id": msg_id, "result": { "content": [{"type": "text", "text": f"Hello, {name}!"}] } }) log("=== Done ===")