Larm is unclaimed —

Larm

Know before your customers do.·larm.dev

Larm is an uptime monitoring platform that checks websites, APIs, and services from multiple global probe locations. It uses multi-probe voting across probes on different continents to confirm outages before alerting, reducing false-positive alerts. It provides full request traces (DNS, TCP, TLS, TTFB, transfer), response time analytics, cron/heartbeat monitoring, and branded status pages. Infrastructure is hosted on EU-owned servers (Hetzner).

What it's for

Monitor websites, APIs, servers, and mail servers for uptimeDetect and alert on outages using multi-probe voting to avoid false positivesMonitor cron jobs and heartbeat pingsMonitor SSL certificates automatically on HTTP checksCreate branded status pages for SaaS productsSend uptime alerts to Slack and PagerDutyMonitor a REST APIMonitor a Vercel deployment

Features 17

14+ alert integrations with deduplication and grouping
Audit log (Business plan)
Automated status page updates
Automatic SSL certificate monitoring on HTTP checks
Branded status pages on custom domain
Cron and heartbeat monitoring
Full request traces (DNS, TCP, TLS, TTFB, transfer)
Geographic breakdowns and trend analysis
Multi-location verification from multiple probe locations
Multi-probe voting to reduce false-positive alerts
Multi-protocol monitoring (HTTP, TCP, DNS, Heartbeat)
Recovery notifications
Response time analytics with p50/p95/p99 percentiles via ClickHouse
REST API and MCP server for automation
Retry and delivery logs for alerts
Subscriber notifications for disruptions
Team workspaces with shared configuration

At a glance

free tierAPI

TypeWeb app

DeploymentCloud

PlatformsWeb

Forengineering teams, small teams, side projects, growing product teams

Integrations

SlackDiscordMicrosoft TeamsMattermostPagerDutyilertincident.ioGrafana IRMPushoverntfyTelegram

Resources

Docs

Pricing

Pro and Business prices shown ($19/mo and $49/mo) are billed annually, totaling $228/yr and $588/yr respectively. A monthly/annual billing toggle is present on the pricing page but the standalone monthly price is not shown.

FreeFree

15 monitors, 3-minute checks, HTTP, TCP, DNS, Heartbeat, All probe locations, 1 branded status page, 1 team seat, 14+ integrations, 90-day data retention, Full API access, Free for commercial use

15 monitors, 3-minute checks

Pro$19/mo · billed annually

Displayed price is billed annually ($228/yr); a monthly billing toggle exists but its price is not shown.

100 monitors, 1-minute checks

Business$49/mo · billed annually

Displayed price is billed annually ($588/yr); a monthly billing toggle exists but its price is not shown.

500 monitors, 30-second checks