Open source · MIT · 12.4k★ on GitHub

npm install your-tool

A type-safe, edge-first observability SDK. Zero config, framework-agnostic, your data stays yours.

Why teams switch

Type-safe everywhere

Strict TypeScript, end-to-end. Your client knows your server's response shape.

Edge-first

Cloudflare Workers, Vercel Edge, Deno Deploy. Cold starts under 5ms.

Zero config

One init line. Works with Next, SvelteKit, Astro, Fastify, Hono, Bun, Deno.

Your data, your house

Self-host or hosted. End-to-end encrypted. SOC 2 Type II on hosted.

Drop-in for legacy SDKs

API-compatible shims for Datadog, Honeycomb, Sentry. Migrate in an afternoon.

Open core

MIT-licensed open core. Paid features are enterprise-only.

Pricing

Free + paid hosted tier. Self-host free forever.

Self-host

Free
  • Open source · MIT
  • Single-binary deploy
  • Community Discord
  • Unlimited everything
Most teams pick this

Hosted

$0.80
  • 1M events/mo free
  • 99.9% uptime SLA
  • Slack support
  • Dashboard + alerting included

Enterprise

Custom
  • Volume discounts
  • Custom retention + regions
  • SAML + audit logs
  • Dedicated CSE + 99.99% SLA

Talk to a human

Sales, enterprise, partnerships. We respond within one business day.

Engineered for the long run.

We build the tooling we wanted when we were on the other side of the table — shipping fast, frustrated by everything that slowed us down.

  • Open API — every workflow scriptable, every data point exportable.
  • Performance budget — P95 under 100ms, sub-second page loads.
  • Sane defaults — opinionated where it matters, configurable where it counts.
Live metrics
50,000+
API calls/min handled
12ms
Median response
99.99%
Uptime SLA
4.9/5
Developer NPS

Developer questions

Do you have a free tier?+

Yes. 10,000 API calls/month, unlimited seats. No card required.

What about rate limits?+

60/min on the free tier, 600/min on Pro, custom on Enterprise.

Can I self-host?+

Enterprise tier ships a self-hostable build. Same product, your infra, your data.

How fast is your support?+

Median first response: 90 minutes. P95 under 4 hours.

Ship faster. Start free.

Get an API key in 30 seconds. No team required.