X-User-ID: <id> on chat requests tocurl --location '/v1/users' \
--header 'Content-Type: application/json' \
--data '{
"name": "alice"
}'{
"id": "usr_1717000000000000000",
"name": "alice",
"created_at": "2019-08-24T14:15:22.123Z",
"usage": [
{
"session_id": "string",
"model": "claude-sonnet-4-6",
"provider": "bedrock",
"tokens": 0,
"prompt_tokens": 0,
"completion_tokens": 0,
"cost_usd": 0.000425,
"timestamp": "2019-08-24T14:15:22.123Z"
}
]
}