Create OCI IAM policy for publishing and consuming OCI Stream - oci iam policy create --from-json file://create-iam-policy.json

create-iam-policy.json

{
  "compartmentId": "<compartment-ocid>",
  "description": "Policy to allow publishers/consumers to use a Stream",
  "name": "use-streams",
  "statements": [
    "Allow group <group-name> to use stream-push in compartment id <compartment-ocid> where target.stream.id='<stream-ocid>'",
    "Allow group <group-name> to use stream-pull in compartment id <compartment-ocid> where target.stream.id='<stream-ocid>'"
  ]
}