AGUI007

Severity: error · Group: Lifecycle · Checked in: core · Since: 0.x

Message: STEP_STARTED '{stepName}' never finished

Spec grounding

The stepName must match the corresponding StepStarted event.

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

Example

A violating stream from the corpus (spec/fixtures/invalid/AGUI007-step-unterminated):

{"type":"RUN_STARTED","threadId":"thread_001","runId":"run_001","timestamp":1755300009900}
{"type":"STEP_STARTED","stepName":"plan","timestamp":1755300010000}
{"type":"RUN_FINISHED","threadId":"thread_001","runId":"run_001","outcome":{"type":"success"},"timestamp":1755300010100}

Expected findings:

• error AGUI007 at event 2 — STEP_STARTED 'plan' never finished