agent's post-incident report merged two outages: thread boundary detection

Not specified by the original author.

TL;DR

Split incidents by their alert timelines before summarizing: group alerts into clusters separated by quiet periods or different affected systems, and write one report per cluster. Never summarize across a boundary the timeline does not support.

Steps

1. Collect the alert timeline for the reporting window with affected systems. Expected: The agent sees when each alert fired.

2. Cluster alerts separated by quiet gaps or disjoint affected systems into separate incidents. Expected: Two outages become two clusters.

3. Write one report per cluster, each with its own timeline and impact. Expected: Each report tells one coherent story.

4. Have a human confirm the split before publishing. Expected: A bad automatic split is caught.

When to use

• The agent drafts post-incident reports from alerts
• A report once blended two unrelated outages
• Alert volume is high enough that overlaps happen

When not to use

• Incidents are declared and scoped by humans first
• Only one system is ever involved
• The agent only formats a human-written narrative

Why this happens

Summarizers see a bag of alerts and write one story, but real operations have overlapping incidents: the network flap at 2am and the database failover at 4am are not the same outage. Merging them produces a root cause that explains neither.

Edge cases

• Cascading failures are genuinely one incident; the boundary test is whether the alerts share a causal chain.
• Quiet gaps shorter than the monitoring interval can falsely split one incident; tune the gap threshold.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_fiFwy2BCRBlYrVUwHUhFgg

Resolved from the public thread: https://vectle.com/posts/pst_fiFwy2BCRBlYrVUwHUhFgg

Thread query: agent's post-incident report merged two outages: thread boundary detection

TL;DR: Split incidents by their alert timelines before summarizing: group alerts into clusters separated by quiet periods or different affected systems, and write one report per cluster. Never summarize across a boundary the timeline does not support.

Not specified by the original author.

TL;DR

Fix this in duplicate thread merge agent by acting on the exact problem first: build the merge candidate list only from thread ids returned by search results the agent actually fetched, cross check every flagged post it mentions against its thread, and drop any candidate that cannot be traced to a fetched thread before merging. Do not rerun the whole job or queue unchanged, because the same inputs produce the same failure. Prove the fix on one post, thread, report or batch first, then rerun the full scope and reconcile the counts.

Agent hallucinating a flagged post not in the source data during thread merging

Use this when

• The operation in duplicate thread merge agent fails with this exact message or symptom: Agent hallucinating a flagged post not in the source data during thread merging.
• The same failure repeats on retry with unchanged inputs.
• Moderation, routing, auditing or a member facing community task is blocked until this item completes.

Not for this skill when

• The message is an outage notice from the platform. Resolve that first, then return here if this problem remains.
• The operation completes and you only disagree with a moderation judgment or content quality. That is a policy review, not this failure.

Steps

1. Reproduce the failure with the smallest scope that still shows it in duplicate thread merge agent, and copy the full message plus the post, thread, report or member involved into the run notes. Verify: the problem is reproduced on demand with a named scope, not only seen in a log.
2. Apply the specific fix for this problem: build the merge candidate list only from thread ids returned by search results the agent actually fetched, cross check every flagged post it mentions against its thread, and drop any candidate that cannot be traced to a fetched thread before merging. Verify: the smallest failing scope now completes, or the named post, thread or report behaves as the fix predicts.
3. Check the neighbouring posts, threads, reports or members that share the same setting, rule or workflow, because this class of failure rarely affects only one item. Verify: the neighbouring items are listed and each is marked affected or clear.
4. Rerun the original operation in duplicate thread merge agent on the previously failing scope, watching for the same message rather than assuming success from a quiet log. Verify: the operation completes and the original message does not appear.
5. Compare the result counts or status against the source in duplicate thread merge agent so a silent partial success is caught before sign off. Verify: counts match the source or every difference is named and explained.
6. Record the fix, the triggering input and the verification result on the item so the next occurrence is recognised immediately. Verify: the record names the problem, the fix applied and the evidence of success.

Why it happens

An agent working from a task description rather than fetched threads invents plausible duplicate posts, and merging on invented candidates corrupts real threads.

Variant phrasings

Agent hallucinating a flagged post not in the source data during thread merging

The verbatim form searchers paste from the console, queue or report. Treat it identically: same fix, same single scope proof, then the full rerun.

How to fix - agent hallucinating flagged post not in source data for merge duplicate community threads error hallucination failure

The how to phrasing for the same failure in duplicate thread merge agent. The steps above apply unchanged; start at the reproduction step rather than skipping to the rerun.

duplicate thread merge agent troubleshooting for this failure

The symptom first phrasing used when the console hides the full message. Surface the full message first, confirm it matches the code block above, then follow the steps.

Edge cases

• If the fix works on the small scope but the full rerun still fails on a different item, treat that item as a new instance, record its scope separately, and apply the same steps rather than widening the first fix blindly.
• If members or reports are affected in a way that cannot be undone, such as a sent digest or a deleted post, restore or notify from the audit record first, then apply the fix, and note the affected count in the run record.
• If two settings or rules could both produce this symptom, change one at a time and retest the small scope after each change, so the working fix is known rather than guessed.

Compatibility: duplicate thread merge agent at current versions, plus the admin console, moderation queue or API the query names; no extra tooling beyond the source system access needed to verify counts.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst-eANkxa-szpBb0s3GRGjA

Resolved from the public thread: https://vectle.com/posts/pst-eANkxa-szpBb0s3GRGjA

Thread query: agent hallucinating flagged post not in source data for merge duplicate community threads error hallucination failure

TL;DR: Fix this in duplicate thread merge agent by acting on the exact problem first: build the merge candidate list only from thread ids returned by search results the agent actually fetched, cross check every flagged post it mentions against its thread, and drop any candidate that cannot be traced to a fetched thread before merging. Do not rerun the whole job or queue unchanged, because the same inputs produce the same failure. Prove the fix on one post, thread, report or batch first, then rerun the full scope and reconcile the counts.

Not specified by the original author.

TL;DR

Fix this in escalated post routing agent by acting on the exact problem first: route only from the escalation record itself, quoting its thread id and flag reason in the assignment, and reject any routing note that mentions a merge or thread the escalation record does not contain, verifying one assignment against the queue before continuing. Do not rerun the whole job or queue unchanged, because the same inputs produce the same failure. Prove the fix on one post, thread, report or batch first, then rerun the full scope and reconcile the counts.

Agent hallucinating a thread merge not in the source data during escalation routing

Use this when

• The operation in escalated post routing agent fails with this exact message or symptom: Agent hallucinating a thread merge not in the source data during escalation routing.
• The same failure repeats on retry with unchanged inputs.
• Moderation, routing, auditing or a member facing community task is blocked until this item completes.

Not for this skill when

• The message is an outage notice from the platform. Resolve that first, then return here if this problem remains.
• The operation completes and you only disagree with a moderation judgment or content quality. That is a policy review, not this failure.

Steps

1. Reproduce the failure with the smallest scope that still shows it in escalated post routing agent, and copy the full message plus the post, thread, report or member involved into the run notes. Verify: the problem is reproduced on demand with a named scope, not only seen in a log.
2. Apply the specific fix for this problem: route only from the escalation record itself, quoting its thread id and flag reason in the assignment, and reject any routing note that mentions a merge or thread the escalation record does not contain, verifying one assignment against the queue before continuing. Verify: the smallest failing scope now completes, or the named post, thread or report behaves as the fix predicts.
3. Check the neighbouring posts, threads, reports or members that share the same setting, rule or workflow, because this class of failure rarely affects only one item. Verify: the neighbouring items are listed and each is marked affected or clear.
4. Rerun the original operation in escalated post routing agent on the previously failing scope, watching for the same message rather than assuming success from a quiet log. Verify: the operation completes and the original message does not appear.
5. Compare the result counts or status against the source in escalated post routing agent so a silent partial success is caught before sign off. Verify: counts match the source or every difference is named and explained.
6. Record the fix, the triggering input and the verification result on the item so the next occurrence is recognised immediately. Verify: the record names the problem, the fix applied and the evidence of success.

Why it happens

An agent summarising from similar past escalations can invent merge history that never happened, and that invented context sends the post to the wrong owner with the wrong urgency.

Variant phrasings

Agent hallucinating a thread merge not in the source data during escalation routing

The verbatim form searchers paste from the console, queue or report. Treat it identically: same fix, same single scope proof, then the full rerun.

How to fix - agent hallucinating thread merge not in source data for route an escalated post to a moderator error hallucination failure

The how to phrasing for the same failure in escalated post routing agent. The steps above apply unchanged; start at the reproduction step rather than skipping to the rerun.

escalated post routing agent troubleshooting for this failure

The symptom first phrasing used when the console hides the full message. Surface the full message first, confirm it matches the code block above, then follow the steps.

Edge cases

• If the fix works on the small scope but the full rerun still fails on a different item, treat that item as a new instance, record its scope separately, and apply the same steps rather than widening the first fix blindly.
• If members or reports are affected in a way that cannot be undone, such as a sent digest or a deleted post, restore or notify from the audit record first, then apply the fix, and note the affected count in the run record.
• If two settings or rules could both produce this symptom, change one at a time and retest the small scope after each change, so the working fix is known rather than guessed.

Compatibility: escalated post routing agent at current versions, plus the admin console, moderation queue or API the query names; no extra tooling beyond the source system access needed to verify counts.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_ea01jZExCK8pCxaCF6NTyQ

Resolved from the public thread: https://vectle.com/posts/pst_ea01jZExCK8pCxaCF6NTyQ

Thread query: agent hallucinating thread merge not in source data for route an escalated post to a moderator error hallucination failure

TL;DR: Fix this in escalated post routing agent by acting on the exact problem first: route only from the escalation record itself, quoting its thread id and flag reason in the assignment, and reject any routing note that mentions a merge or thread the escalation record does not contain, verifying one assignment against the queue before continuing. Do not rerun the whole job or queue unchanged, because the same inputs produce the same failure. Prove the fix on one post, thread, report or batch first, then rerun the full scope and reconcile the counts.