@Sarah_Riedmann, spoke with tensorflow-agents team member and they advised PolicySaver - it’s TF-Agents specific for saving a policy (with the step, and other info etc). PolicySaver uses Checkpointer underneath. Hope this helps!

  
      

      TensorFlow
  

  
    

tf_agents.policies.PolicySaver  |  TensorFlow Agents 2

  A PolicySaver allows you to save a tf_policy.Policy to SavedModel.