Ethereum solo staker monitoring: real-time alerts for home validators
What this is: Eyrium fires alerts when your validator misses too many attestations, gets slashed, drops balance, or has its fee recipient changed. All on your phone, Telegram, or email.
Free tier: 1 validator, email alerts, no expiry. Built for the solo staker who runs one validator and just needs to know when something breaks.
Pro ($7/mo): Up to 200 validators, Android push (live), iOS push (in review), and native Telegram. The full stack for someone running a few validators at home.
Built by: A solo home staker. Not a staking pool. Not an infrastructure company.
The solo staker problem nobody solves for you
If you run an enterprise staking operation, you have a monitoring team, a pager rotation, and probably a Grafana stack. When something breaks at 3am, someone's phone rings.
If you're a solo home staker, that person is you — and you only find out if you get the notification.
Most solo stakers do one of two things: refresh beaconcha.in when they remember, or set up a generic monitor that pages on every relay-delay head-only miss until they mute it. Neither works. The first is reactive. The second trains you to ignore alerts until a real failure slips through silent.
The failure modes that actually matter for solo stakers are specific:
Missed attestation streak. An isolated miss is noise — relay delays hit everyone. A streak of consecutive misses means your node is down, your client crashed, or your sync fell behind. By the time you notice at your next dashboard check, you've quietly leaked income for hours.
Slashing. Catastrophic and nearly always operational — duplicate keys running on two machines after a failover, a DR restore that didn't cleanly exit on the original, or a VM snapshot rehydration that brought a stale validator back online. Your own ETH. One moment of confusion during a migration and it's gone.
Fee-recipient change. A supply-chain attack on your staking setup — someone modifies your configuration so block rewards route to their address instead of yours. Silent until you notice the rewards don't add up.
Balance drop. Offline penalties accumulate. You want to know before the quiet erosion becomes a visible dent.
There's no ops team to catch these. The monitoring is your responsibility, which means the monitoring has to actually work — low noise, fast signal, delivered to wherever you'll see it.
Why alert fatigue kills solo validator monitoring
Ethereum attestation monitoring has a specific noise problem: relay-delay head-only misses.
When a validator misses an attestation because the head block arrived late at the relay level — not because the validator itself is down — it registers as a miss on the beacon chain. A generic monitoring tool pages on every one. If you run 3–5 validators, you can expect several of these per day under normal conditions.
The standard outcome: alert fatigue sets in. You mute the monitor, or you start ignoring notifications. Then you miss the alert when your node actually crashes.
Eyrium has two controls specifically for this:
- Configurable streak threshold (1–10). Set how many consecutive missed attestations trigger an alert. A single miss: noise. Five consecutive misses: your node is down. You pick the threshold. Most solo stakers run 3–5.
- Head-only-miss suppression. Filter out misses where only the head component was missed — the pattern that identifies relay-delay false positives — and don't count them toward your streak. The slot still gets flagged in your history; it just doesn't page you.
Together, these mean you get paged on real failures and almost nothing else. That's the only way alerts stay trustworthy long enough to be useful.
What Eyrium monitors (full alert list)
- Missed attestation — configurable streak threshold (1–10 consecutive misses before firing), with optional head-only-miss suppression. The primary alert for "my node is down."
- Slashing / exit / withdrawal — a single status-change alert covers the full range of validator state transitions: active → slashed, active → exiting, and withdrawal processing. You don't need separate alerts for each; one notification covers the state machine.
- Balance drop — fires when your effective balance falls below a threshold. Catches accumulating offline penalties before they become significant.
- Fee-recipient change — fires when the fee recipient address on your validator changes. It also fires when a validator's withdrawal credentials change, catching someone redirecting your withdrawal destination. Supply-chain protection.
There is no missed-proposal alert and no sync-committee alert yet.
The free tier is built for you
Most monitoring products treat free tiers as an acquisition hook — crippled enough that you upgrade quickly.
The Eyrium free tier is genuinely useful for the smallest solo staker: 1 validator, all four alert types, email delivery, no time limit. If you run exactly one validator and you check email, the free tier is complete coverage.
You upgrade to Pro ($7/mo) when:
- You want alerts on your phone, not just in your inbox (Android app live on Google Play; iOS in Apple review)
- You want a Telegram bot that messages you natively
- You're running more than one validator (Pro covers up to 200)
No per-validator pricing. No compute-unit model. Flat $7/mo.
Delivery channels
| Channel | Free | Pro |
|---|---|---|
| ✓ | ✓ | |
| Telegram (native bot) | — | ✓ |
| Android native push | — | ✓ (live on Google Play) |
| iOS native push | — | In Apple review |
There is no Discord, no Slack, no SMS, and no webhook.
Who built this
Eyrium was built by a solo home staker who got tired of the same problem: either refresh the dashboard manually, or fight alert fatigue from a monitor that pages on every relay-delay miss. The streak threshold and head-only-miss suppression aren't features that shipped because a product manager thought they sounded good — they're the specific controls a solo staker actually needed.
FAQ
- What's the best free validator monitoring tool for solo stakers?
- Eyrium's free tier covers 1 validator with email alerts for all event types — missed attestations, slashing, balance drops, and fee-recipient changes. beaconcha.in also offers free email alerts. The practical difference for most solo stakers is noise control: Eyrium's configurable streak threshold and head-only-miss suppression reduce false positives; beaconcha.in's alert system doesn't have equivalent filtering.
- How do I stop getting flooded with missed attestation alerts?
- Two controls in Eyrium address this. First, set a streak threshold (e.g., 3–5 consecutive misses) so single-miss events don't page you. Second, enable head-only-miss suppression — relay-delay misses register a head-only pattern, and Eyrium can filter these out of your streak count. Together they eliminate most alert noise while keeping the signal for real outages.
- Do I get slashing alerts on the free tier?
- Yes. Slashing is a status-change event, and status-change alerts are included on all tiers including free. If your 1 validator gets slashed, you get an email. You don't need a paid plan for that.
- How fast will I know if my validator goes offline?
- Eyrium polls the beacon chain on a 1-minute cron. Worst-case detection latency is ~60 seconds from when the missed attestation streak crosses your threshold. How fast you get notified after that depends on your channel: native push is near-instant; email has provider delivery delays.
- I run Rocket Pool. Does Eyrium work with minipool validators?
- Yes. Eyrium monitors validators you add by their validator pubkey, regardless of the type of node software you're running. A Rocket Pool minipool validator works the same as any other. Add the validator pubkey in Eyrium and alerts fire on the same events. Note: Rocket Pool-specific events (commission changes, RPL collateral, node health) are not Eyrium alert types — it watches the beacon chain, not the Rocket Pool contracts.
- What about Dappnode or eth-docker? Any setup required?
- No integration needed. You only need your validator pubkey. Eyrium doesn't connect to your node — it monitors the beacon chain directly. Whatever client stack you're running underneath, if the validator is on mainnet, Eyrium can watch it.
- I only run 1 validator. Is $7/mo worth it?
- Probably not — the free tier is designed for exactly this case. 1 validator, email alerts, all event types. Upgrade to Pro if you want phone push notifications or Telegram. If email is sufficient, the free tier has no gaps.
- Does Eyrium have a mobile app?
- The Android app is live on Google Play. The iOS app has been submitted to Apple and is in review — it isn't available for download yet.
Start monitoring in under two minutes.
Add your validator pubkey, confirm your email, done. Free tier covers 1 validator with full alert coverage — no credit card, no expiry. Running more than one validator or want alerts on your phone? Pro is $7/mo flat.
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