Most indie developers end up with one service for uptime, another for cron jobs, a calendar reminder for domain renewals, and nothing watching LLM costs. Sentinelboard brings all of that into one simple dashboard.
What it monitors:
Website availability (uptime + response time)
API responses with body validation - catches when the page is up but functionality is broken
Cron job / heartbeat monitoring - detects missed or late scheduled jobs
Domain expiration dates
VPS / hosting renewal dates
Error tracking
LLM API calls, tokens, and costs via OpenTelemetry tracing
OpenRouter credit balance
Alerts where you already are: Slack, email, Telegram, Discord, SMS, or webhooks. Pick the channel, set the threshold, done.
Built-in LLM observability tracks every LLM call - model, provider, tokens, cost, duration - and runs automatic anomaly detection to flag unusual cost or usage spikes. If you're building with AI APIs and want cost visibility without setting up a separate observability stack, this covers it.
Setup takes minutes. No infrastructure agents to install, no complex configuration - add your endpoints and monitors, and you're covered 24/7.
Free tier for side projects. Usage-based pricing after that - no per-seat fees, no long-term contracts.
