INVALID_LICENSE¶

This error is raised when license verification fails while attempting to start a self-hosted LangGraph Platform server. This error is specific to the LangGraph Platform and is not related to the open source libraries.

When This Occurs¶

This error occurs when running a self-hosted deployment of LangGraph Platform without a valid enterprise license or API key.

Troubleshooting¶

Confirm deployment type¶

First, confirm the desired mode of deployment.

For Local Development¶

If you're just developing locally, you can use the lightweight in-memory server by running langgraph dev. See the local server docs for more information.

For Managed LangGraph Platform¶

If you would like a fast managed environment, consider the Cloud SaaS deployment option. This requires no additional license key.

For Standalone Container¶

For self-hosting, set the LANGGRAPH_CLOUD_LICENSE_KEY environment variable. If you are interested in an enterprise license key, please contact the LangChain support team.

For more information on deployment options and their features, see the Deployment Options documentation.

Confirm credentials¶

If you have confirmed that you would like to self-host LangGraph Platform, please verify your credentials.

For Standalone Container¶

1. Confirm that you have provided a working LANGGRAPH_CLOUD_LICENSE_KEY environment variable in your deployment environment or .env file
2. Confirm the key is still valid and has not surpassed its expiration date