Use cases

Most days it saves an hour. Some days it saves the night.

Give an agent eyes on production — logs, metrics, health, and config across the whole fleet — and it earns its keep every day: a pre-flight check before a migration, "why is checkout slow," a cert sweep before the pager finds out. And when something does break, the same loop holds — investigate through declared actions, stop the bleed behind one approval, land the durable fix. Every step on the record.

Every day

The work that never makes a post-mortem.

The boring wins compound: questions answered in a minute, drift caught before it bites, a risky migration de-risked before you commit. These are representative of an ordinary Tuesday; the war stories below are real incidents, logged with the command output to prove it.

Pre-flight

Pre-migration go / no-go

Before you cut prod to the new cluster, you ask: is the target ready? The agent checks disk and memory headroom, confirms the replicas are caught up, validates every TLS cert, and diffs the configs against prod across every node, then hands back a go/no-go in a minute. The migration that doesn't roll back at 2 a.m. is the one nobody remembers.

Investigate

"Why is checkout slow?"

You ask in plain English. The agent correlates nginx access logs, Prometheus p99, the database's lock and slow-query state, and the upstream's health across services, then narrows it to a wedged connection pool. Minutes, not an hour of greps and tails across six SSH sessions.

Self-debug

It debugs what it shipped

Your coding agent deploys and error rates tick up. Instead of waiting for a human to gather context, it reads its own deploy's logs and metrics, spots the env var it got wrong, and opens the fix as a reviewed PR — no round-trip just to find out what happened.

Sweep

Cert expiry, before the pager

"Which certs expire in the next 30 days?" The agent walks every host and ingress, checks expiry, and hands you the three about to lapse, days remaining and all, before an outage finds them for you.

Triage

First response, before you're awake

The page fires. The agent triages first — the failing service's logs, the last three deploys, the resource pressure, the dependency that's actually down — so you wake to a diagnosis and a remediation waiting on your approval, not a blank alert and a cold terminal.

Capacity

Ready for the launch?

Before the campaign goes live, you ask whether the fleet can take it. The agent reports current headroom, connection-pool limits, and the slowest dependency across every service — so you scale the one thing that matters instead of over-provisioning everything.

When it counts

And the nights it earns its keep.

Real incidents, worked end to end. Same shape every time under load: read first to find the cause, gate the one destructive move, leave the fix as reviewable code. Read them in full, command output and all.

Incident response

The 33-hour wipe: a CSI driver reformatted a live LUN

A democratic-csi driver ran mkfs over a live Pure LUN on a dm-multipath path-group race — 33 hours of VictoriaMetrics data gone. The agent investigated through declared actions, stopped the writes behind one approval, then landed the durable fix as reviewable infra: a guard that refuses to trust the driver. The honest part is that the obvious one-line setting was a no-op.

33h metrics lost 6-second zero-path window mkfs.guard fix

Read the post-mortem

Ingress

The fleet-wide 502 that no backend was causing

Every app behind one anycast edge threw intermittent 502 Connection refused — yet every backend was green. The agent traced it across five layers (FRR, Traefik, Nomad, Consul) to a Traefik OOM loop plus a wedged node still advertising a dead ingress, replaced the OOM-looping allocs behind one approval, and named the fix that collapses the blast radius: health-gate the anycast.

~40% of connects refused Exit 137 OOM at 1 GiB one node, dead ingress

Read the post-mortem

emisar doesn't claim to prevent the failure — it changes everything a human or an agent does around it: a finite catalog instead of a shell, one approval instead of standing access, and a searchable record instead of a guess. See exactly how the boundary holds on the security page.

Put a gated agent on your next migration — and your next incident.

Install a runner, connect your LLM, and let it investigate behind policy — acting only when you approve. Free for three runners, no credit card.

Start free Read the quickstart

Three runners. Seven-day audit. No credit card.