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Stop guessing.See exactly what broke in production.

We capture real production events instead of abstract metrics. That's why you can understand incidents instantly, without guessing or setup.

Takes under 30 seconds · Remove anytime

The future of observability israw, contextual, unified, and event-based.

Events

TimeStatusEventMethodRouteDuration
2026-01-15 02:31:23.105
ok
http.requestPOST/api/checkout342ms
2026-01-15 02:30:23.105
error
http.requestPOST/api/users1.23s
2026-01-15 02:29:23.105
ok
http.requestGET/api/events89ms
2026-01-15 02:28:23.105
ok
user.action5ms
2026-01-15 02:27:23.105
ok
http.requestDELETE/api/sessions42ms
2026-01-15 02:26:23.105
ok
cache.hit2ms

Browse and filter production events in real-time

Why teams choose Callisto

60-Second Setup

One npx command. No config files, no agents, no complex integrations. Start capturing events in under a minute.

AI-Powered Insights

Ask questions in plain English. Our AI analyzes your events and explains exactly what went wrong and why.

Full Context

See the complete picture: request payloads, database queries, user actions—all linked together in one timeline.

Simple, transparent pricing

Start free, upgrade when you need more

Free

For hobby projects and small teams

$0forever
  • Up to 10,000 events/month
  • 7-day data retention
  • 3 team members
  • Basic event filtering
  • Community support
  • AI-powered insights
  • Custom dashboards
  • API access

Pro

Popular

For production apps and growing teams

$49per month
  • Unlimited events
  • 90-day data retention
  • Unlimited team members
  • Advanced event filtering
  • Priority support
  • AI-powered insights
  • Custom dashboards
  • Full API access