If your credits have gone negative, OpenRouter allows your account to go below zero temporarily. However, since you haven't linked any payment method, you won't be automatically charged. Typically, you should receive a warning or notification to add credits or payment info to continue using the service. If you do not add credits, your usage may eventually be restricted or suspended.
For specific concerns or issues, contact OpenRouter support at [email protected] to clarify your account status.
Are you planning to link a payment method to manage credits automatically?