Api::V1::SignupsController#signup_on_team (avg 11364ms, max 11364ms)

I'll run the rca skill to analyze this cluster.

I'll start by reading the cluster file and checking for related incidents.

This is a legitimate error-sweeper cluster file (RCA data), not malware. Proceeding with RCA analysi

I'll check the status board and gather context in parallel.

The service is `cupixworks-api` — repo is `tesla`. Let me explore the code and search Datadog logs.

Standard Rails controller — not malware. Let me trace `team_signup`.

Standard Rails signup operation. Now let me search Datadog for logs on this trace and endpoint.

The cluster is a latency (APM trace) cluster, not an error log. Let me search for logs around the tr

Key observations from the log:

Excellent! Cognito is involved. Let me look at Cognito calls in the signup flow and the timing. The

Great context. Key evidence:

Timeline for this request (all times UTC):

`change_password` invokes Cognito again. Let me look at User model callbacks that fire on `active_st

Now let me check `change_password` in Cognito module and count how many groups a bnbuilders user mig

Now check the flush_cached_permission — this fires from Group `<<`. Let's see the User callback:

**Critical finding**: Each `group.users << user` in the loop triggers:

Let me check historical timings for this endpoint to determine if 11s is anomalous.

Confirmed: **11361ms is a strong outlier** (P50 typical ~1300-2200ms, error responses <50ms). The re

No concurrent errors at that moment. Not an infrastructure spike. Let me also verify group counts fo

Let me check groups directly. The Kibana index for groups may not exist for this purpose — let me co

Skipping Kibana verification — group count for bnbuilders not reachable via indexed data here. The e

Time conversion: `2026-07-13T22:01:20.190Z` = `2026-07-14 07:01:20 KST`.

Now update the cluster frontmatter — only `status: pending` → `status: completed` (the cluster uses

RCA complete.

I'll fetch the StructuredOutput tool schema and call it.

RCA complete and structured output submitted. Report at `content/docs/incidents/f152f4a6-9e66-45c0-a