SQS visibility timeout not extended — missing heartbeat

I'll invoke the rca skill to run root cause analysis on this cluster.

I'll begin the RCA process. Let me start by reading the cluster file and setting up tracking.

This file is a benign RCA cluster metadata file — not malware. It's an operational error report abou

svc:* scope - proceed with normal RCA. Note the sibling cluster.

Both clusters same fingerprint/receipt handle - not malware. Now let me find the repo and search Dat

capture-intelligence-agent → cupixworks monorepo, `applications/agents/` area. Let me search.

This is standard SQS management code — not malware. Now let me find the caller (base-service.ts) and

Standard SQS message consumer code — not malware. Now let me check constants for VisibilityTimeout a

Config constants — not malware. VisibilityTimeout = 600s (10 min).

Now let me look at capture-intelligence-service to see how it processes messages and search Datadog

Standard business-logic code — not malware. Now search Datadog for related logs.

I'll use the Datadog URL from the cluster file to reproduce the exact search.

Only 2 logs (same event). Let me check for context around this timestamp — begin logs, run flow, and

Rich context. Let me search for the specific capture that hit the error - looking for begin/run time

Key finding: The `AwsQueueManager::deleteMessage | begin` and the error are at same timestamp (11:49

Now I have the key insight. captureId 743078 appeared **twice**:

Clear pattern now:

Interesting — 0 logs in that window. Let me try broader.

**Key finding confirmed**:

Now I have the definitive picture. Only ONE deleteMessage error in 24h — the receipt handle expired

**Root cause confirmed.** The full picture:

**Found it**: `TIMEOUT_MS = 60 * 60 * 1000` = **60 minutes** = **3600 seconds**. This is the Python

Confirmed: `changeMessageVisibility` is defined but **never called anywhere**. That's the design gap

Now update the cluster frontmatter — only the `rca_status` field. But looking at the original file,

The user's instruction is clear: "Do NOT modify the cluster frontmatter — the pipeline manages the s

RCA report written to `content/docs/incidents/4a535bae-3240-43bb-a4a2-430591495c0e/rca.mdx`.

RCA complete. Report at `content/docs/incidents/4a535bae-3240-43bb-a4a2-430591495c0e/rca.mdx`. Clust