AGUI508

Severity: error · Group: Transport · Checked in: transport · Since: 0.x

Message: Connection ended mid-run '{runId}' without RUN_FINISHED or RUN_ERROR

Spec grounding

Every run terminates with either RunFinished or RunError.

Source: https://docs.ag-ui.com/concepts/events#runfinished

Example

This rule is checked at the transport layer, so its fixture is a timed HTTP replay rather than a bare stream — see spec/fixtures/invalid/AGUI508-connection-dropped and the replay protocol in spec/fixtures/README.md:

{
  "contentType": "text/event-stream",
  "chunks": [
    {
      "gapMs": 0,
      "text": "data: {\"type\":\"RUN_STARTED\",\"threadId\":\"thread_001\",\"runId\":\"run_001\",\"timestamp\":1755300024700}\n\n"
    }
  ],
  "abnormalEof": true
}

Expected findings:

• error AGUI508 at stream — Connection ended mid-run 'run_001' without RUN_FINISHED or RUN_ERROR
• error AGUI003 at stream — Run 'run_001' ended without RUN_FINISHED or RUN_ERROR