OPT_HOST_API_KEY

OPT_HOST_API_KEY = click.option(
  '--api-key',
  envvar='LANGGRAPH_HOST_API_KEY',
  help='API key. Can also be set via LANGGRAPH_HOST_API_KEY,
  LANGSMITH_API_KEY,
  or LANGCHAIN_API_KEY environment variable or .env file.'
)