Silent automation failures: how four of our own systems broke while reporting success

Description and use

Automations reported success but did no work. Proof‑of‑life rules were added: outcome assertions, quiet alerts, default un‑mute, explicit environment pinning, full log review.

Problem

Automations reported success but performed no work, leading to silent failures.

Outcome

Four silent failures were identified and fixed within an afternoon each, improving reliability and alerting.

Workflow

• Audit existing automations for silent failures
• Assert real outcome metrics (e.g., send count, posted items)
• Add alerts for quiet periods
• Un‑mute alert switches by default
• Pin explicit interpreter and certificate paths
• Read full logs, not just tails

Evidence

Exit code zero means the process ran. It does not mean the work happened.

Source

The proof‑of‑life rule we build to now

Source