Operational Incident Review

Why ForgeBot Did Not Answer Sara

The messages reached the Slack adapter and were acknowledged, but they never reached the agent. The green check marks were false-success indicators produced by the reaction lifecycle.

CHANNEL C0AGDV2300H
WINDOW 4:12–5:12 PM HST
24 JUL 2026
Finding

This was an ingress-routing failure, not a model failure and not a Slack send failure. Sara’s two valid first-token mentions produced no inbound gateway log, no agent-start hook record, no session transcript, and no reply. The adapter still classified the empty return as success and replaced its “eyes” reaction with a green check.

Most likely trigger: the gateway received an event without a usable sender identity and silently returned before authorization and agent dispatch. Confidence: moderate-high.

Observed Outcome

2valid Sara mentions
0agent starts, transcripts, or replies
2misleading green check marks

Adam’s mention six minutes later entered the gateway normally and received a reply in 5.5 seconds, proving the gateway, model, and Slack send path were live.

What The Check Mark Meant

Only that the adapter’s message handler returned without throwing. It did not prove that an answer was generated or delivered.

The current lifecycle treats an empty response as success when no delivery was attempted. That is the misleading behavior Sara saw.

Open Sara’s proposal question Open Sara’s check-mark question

Last-Hour Channel Timeline

5:04:55 PM
Sara
“How does the concept of assumptions apply to a proposal, and what sort of content would require it?” CHECK ONLY
5:05:22 PM
Sara
“What does check mark mean?” CHECK ONLY
5:06:32 PM
Sara → Adam
“Am I on Time Out from ForgeBot? It check marked me without content?”
5:11:16 PM
Adam
“You there?” ANSWERED 5.5s
5:11:23 PM
ForgeBot
“Yep, I’m here.”
5:11:37 PM
Adam → Sara
“Try now?”
5:12:16 PM
Adam
Requested this last-hour preview and incident analysis.

Runtime Evidence

20:11:17 INFO inbound message: platform=slack user=Adam chat=C0AGDV2300H msg='<@U0B9SM7MVB5>: you there?' 20:11:23 INFO response ready: platform=slack chat=C0AGDV2300H time=5.5s api_calls=1 response=14 chars 20:11:23 INFO [Slack] Sending response (14 chars) to C0AGDV2300H No inbound-message, agent-start, intentional-silence, model-error, or Slack-send-error record exists for Sara’s 20:04:55 or 20:05:22 events. No session transcript contains Sara’s proposal question. The gateway process remained continuously alive; one managed instance was running.
ROOT CAUSE CHAIN

What Happened

  • Slack delivered two first-token ForgeBot mentions.
  • The adapter admitted them and enabled reaction tracking.
  • The gateway returned before agent dispatch; the absence of agent-start and transcript evidence proves this boundary.
  • The adapter interpreted the empty return as successful processing and added a green check.
WHY THIS LOOKED WORSE

Telemetry Gap

  • The silent pre-agent return did not emit a reason at the active log level.
  • The success reaction is based on “no exception,” not “reply delivered.”
  • That combination converted a dropped request into apparent completion.

Recommended Fix

  1. Never add a success check unless text or an attachment was actually delivered.
  2. Log every pre-agent drop with a reason, message timestamp, sender ID, and channel ID.
  3. Recover sender identity from the Slack event/message before authorization when the incoming event omits it.
  4. Add an end-to-end regression test: valid non-owner first-token mention → agent start → visible reply.

Scope And Confidence

Channel history came from the ForgeBot bot token and was limited to the requested one-hour window. Speaker identity was resolved with Slack user data.

The boundary failure and false-success reaction are proven. The exact silent-return branch is inferred because that branch currently has no production log. Missing sender identity best matches all observed evidence; instrumentation is required to prove it on recurrence.