AGUI207

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

Message: TOOL_CALL_RESULT references toolCallId '{toolCallId}', which was never started

Spec grounding

toolCallId: Matches the ID from the corresponding ToolCallStart event

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

Example

A violating stream from the corpus (spec/fixtures/invalid/AGUI207-result-unknown-id):

{"type":"RUN_STARTED","threadId":"thread_001","runId":"run_001","timestamp":1755300015600}
{"type":"TOOL_CALL_RESULT","messageId":"msg_001","toolCallId":"call_ghost","content":"orphan","timestamp":1755300015700}
{"type":"RUN_FINISHED","threadId":"thread_001","runId":"run_001","outcome":{"type":"success"},"timestamp":1755300015800}

Expected findings:

• error AGUI207 at event 1 — TOOL_CALL_RESULT references toolCallId 'call_ghost', which was never started