Hosted APNs and FCM

Alerts that finally break through notification noise.

Reliable push for on-call engineers. Delivered over APNs and FCM, native Alertmanager support, and infrastructure you can own.

About ten minutes to get running (no credit card required).

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Handler critical alert on iPhone lock screen with Acknowledge over stacked infrastructure notifications

Channels

prod-alerts

grafana-oncall

cron-jobs

Delivered via APNs

142ms · acknowledged

even when the app is closed

Built by a DevOps engineer, for their own on-call first

One webhook away from your phone.

We built a universal way to open and close incidents, inspired by Alertmanager, but not tied to it. Any system that can POST a webhook can fire and resolve the same way; the examples below show that flow.

yaml

route:
  receiver: "handler"

receivers:
  - name: "handler"
    webhook_configs:
      - url: "https://api.gethandler.app/api/v1/alertmanager"
        send_resolved: true

1) Fire

curl -sS -X POST \
  "https://api.gethandler.app/api/v1/universal/fire?token=YOUR_CHANNEL_TOKEN&user=YOUR_USER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Disk usage high",
    "message": "root partition at 92%",
    "labels": {
      "host": "db-01",
      "severity": "critical",
      "location": "eu-central-1",
      "service": "postgres"
    }
  }'

2) Resolve

curl -sS -X POST \
  "https://api.gethandler.app/api/v1/universal/resolve?token=YOUR_CHANNEL_TOKEN&user=YOUR_USER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Disk usage high",
    "message": "root partition at 92%",
    "labels": {
      "host": "db-01",
      "severity": "critical",
      "location": "eu-central-1",
      "service": "postgres"
    }
  }'

1) Fire

# .github/workflows/notify.yml — step run: |
curl -sS -X POST \
  "https://api.gethandler.app/api/v1/universal/fire?token=${{ secrets.HANDLER_TOKEN }}&user=${{ secrets.HANDLER_USER }}" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "CI failed",
    "message": "${{ github.repository }} / ${{ github.workflow }}",
    "labels": {
      "host": "github-actions",
      "severity": "warning",
      "location": "ci",
      "service": "github"
    }
  }'

2) Resolve

# Same labels as fire so Handler matches the open alert
curl -sS -X POST \
  "https://api.gethandler.app/api/v1/universal/resolve?token=${{ secrets.HANDLER_TOKEN }}&user=${{ secrets.HANDLER_USER }}" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "CI failed",
    "message": "${{ github.repository }} / ${{ github.workflow }}",
    "labels": {
      "host": "github-actions",
      "severity": "warning",
      "location": "ci",
      "service": "github"
    }
  }'

1) Fire

# Jenkinsfile — sh """ … """
curl -sS -X POST \
  "https://api.gethandler.app/api/v1/universal/fire?token=${HANDLER_TOKEN}&user=${HANDLER_USER}" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Build failed",
    "message": "${JOB_NAME} #${BUILD_NUMBER}",
    "labels": {
      "host": "jenkins",
      "severity": "warning",
      "location": "ci",
      "service": "jenkins"
    }
  }'

2) Resolve

# Same labels as fire so Handler matches the open alert
curl -sS -X POST \
  "https://api.gethandler.app/api/v1/universal/resolve?token=${HANDLER_TOKEN}&user=${HANDLER_USER}" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Build failed",
    "message": "${JOB_NAME} #${BUILD_NUMBER}",
    "labels": {
      "host": "jenkins",
      "severity": "warning",
      "location": "ci",
      "service": "jenkins"
    }
  }'

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Features

What you get

We do not like landings that hide what the product really looks like. Let the screens below show Handler in full, so you can decide if it is for you.

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Reliable Push Notifications

APNs and FCM with the app closed. Title, body, and priority on the lock screen.

Emergency

Priority 2. Retries until you acknowledge.

Global Mute & Alert Snooze

Mute everything for 5 minutes to several hours when you need a break.

Inbox

Every firing and resolved alert in one searchable stream.

Alert details with history

Labels, timeline, and push/ack history for every incident.

Quiet Hours

Scheduled silence for sounds. Alerts still hit Inbox; critical can override.

Live updates

Live app updates and cross-device sync. No pull to refresh.

Configurable sounds

Different tones for emergency, firing, and resolved.

Comparison

Compared to Slack, email, and SMS

Where Handler differs from the channels most teams already use for alerts.

Capability	Slack	Email	SMS
Push via APNs & FCM			—
Emergency retry until ACK	—	—	—
Native Alertmanager fire & resolve	—	—	—
Inbox
Active Alerts	—	—	—
Alert detail with full history	—	—	—
Rich notifications	—	—	—
Customizable sounds & settings	—	—	—
Customizable Quiet Hours	—	—	—
Live / cross-device sync			—

Frequently asked questions

Handler exists so important alerts can cut through everyday notification noise. Slack and Discord webhooks don't have that punch for on-call.

I built Handler from my own DevOps and homelab needs: easy to send, hard to miss on the phone.

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