curl -X POST "http://localhost:8000/api/v2/agents/my-agent/recall/changed-since" \
  -H "X-Session-Token: your_session_token" \
  -H "Content-Type: application/json" \
  -d '{
    "since": "2026-05-01",
    "limit": 20,
    "type": ["fact", "decision"]
  }'

curl -X POST "http://localhost:8000/api/v2/agents/my-agent/recall/changed-since" \
  -H "X-Session-Token: your_session_token" \
  -H "Content-Type: application/json" \
  -d '{
    "since": "2026-05-01T00:00:00Z"
  }'

{
  "agent_id": "my-agent",
  "session_id": "sess_123abc",
  "since_date": "2026-05-01T00:00:00+00:00",
  "memories": [
    {
      "id": "4f792e13-b39d-5e2e-a743-c9ebef2e0e1d",
      "title": "System Upgrade",
      "content": "System upgraded to v2.0",
      "text": "[FACT] System Upgrade\n\nSystem upgraded to v2.0",
      "type": "fact",
      "confidence": 0.9,
      "status": "active",
      "tags": [],
      "created_at": "2026-05-04T10:15:30Z",
      "updated_at": "2026-05-04T10:15:30Z",
      "actor_id": "my-agent",
      "source": "agent",
      "source_ref": null,
      "agent_id": "my-agent",
      "score": null,
      "provenance": "explicit_statement",
      "change_type": "created"
    }
  ],
  "count": 1,
  "temporal_mode": "changed_since"
}

{
  "detail": {
    "error": "SessionExpired",
    "message": "Session has expired",
    "details": {}
  }
}

{
  "detail": [
    {
      "type": "missing",
      "loc": ["body", "since"],
      "msg": "Field required",
      "input": {}
    }
  ]
}

{
  "detail": {
    "error": "InternalServerError",
    "message": "An unexpected error occurred",
    "details": {
      "original_error": "Session is for agent 'other-agent', cannot access 'my-agent'"
    }
  }
}