hello@logkit.io · Status · GitHub
Structured Logging SDK

Logs that tell you
exactly what happened.

From SDK to dashboard, LogKit gives backend engineers a precision-crafted logging layer that transforms raw noise into signal.

No credit card required · 14-day full-feature trial · MIT-licensed SDK

live stream
[14:02:01] INFO user.login {"id":"u_992","ip":"192.168.1.4","user_agent":"Mozilla/5.0"}
[14:02:01] INFO payment.processed {"tx_id":"tx_442","amount":49.99,"currency":"USD"}
[14:02:02] WARN cache.hit {"key":"user_profile:u_992","ttl":3600}
[14:02:03] INFO api.request {"method":"GET","path":"/v1/products","status":200}
[14:02:04] ERROR db.query {"table":"orders","error":"deadlock detected","retry":1}
[14:02:05] INFO user.logout {"id":"u_992","duration_ms":340}
[14:02:06] INFO user.login {"id":"u_881","ip":"10.0.0.5","user_agent":"curl/7.68"}
[14:02:07] INFO payment.processed {"tx_id":"tx_881","amount":12.50,"currency":"USD"}
[14:02:08] INFO cache.hit {"key":"user_profile:u_881","ttl":3600}
[14:02:09] INFO api.request {"method":"GET","path":"/v1/status","status":200}
[14:02:10] WARN rate.limit {"ip":"192.168.1.4","limit":100,"used":101}
[14:02:11] INFO user.login {"id":"u_992","ip":"192.168.1.4","user_agent":"Mozilla/5.0"}

Trusted by engineering teams at

Vercel Stripe Linear Figma Supabase

10M+ log events processed daily across our infrastructure

Emit

The SDK enforces structured types at the source. No more string concatenation or messy JSON dumps. Explicit fields, zero ambiguity.

Ship

Zero-config shipping. The SDK automatically batches, compresses, and flushes events to our edge network with sub-millisecond overhead.

Observe

Query billions of events with a unified JSON schema. Drill down from trace IDs to specific user actions in seconds.

From chaos to clarity

See the difference in your own code

The old way (Unstructured)

legacy_service.go
// Console.log is noisy
console.log("User " + userId + " bought " + prodId + " for $" + price);
// Result:
User 992 bought 442 for $49.99
User 881 bought 881 for $12.50
...and so on...

The LogKit way (Structured)

logkit_service.go
// Explicit types & context
log.Info("purchase.completed",
  "user_id", userId,
  "product_id", prodId,
  "amount", price,
  "trace_id", ctx.Value("trace"));
// Result:
{ "level": "info", "msg": "purchase.completed", "user_id": 992, "product_id": 442, "amount": 49.99 }
Deep Dive

Smart defaults for complex systems

Automatic Context Propagation

LogKit injects trace IDs, request IDs, and user context automatically. No manual passing of variables required.

Zero-Config Sampling

Reduce noise in production by 99% without writing complex logic. Configure sampling rates per log level or service.

Schema Enforcement

Define JSON schemas for your log events. The SDK will reject events that don't match, preventing bad data from reaching your dashboard.

LogKit dashboard showing structured data visualization
Testimonials

Engineers love structured logs.

"LogKit completely changed how we debug production issues. We went from grep-heavy debugging to querying specific user events in seconds. It's like night and day."

SJ

Sarah Jenkins

CTO at CloudScale

"The SDK overhead is negligible, but the value is massive. Enforcing a schema at the source means we never have to clean up data in the analytics pipeline again."

MR

Mike Ross

Senior Backend Engineer, NodeTech

Integrations

Works with your existing stack

Seamlessly integrate with your data pipeline and observability tools.

Datadog
Grafana
AWS
Kafka

Free

$0/mo

  • 5 GB/month ingested
  • 7-day retention
  • 1 team member
Get Started
Most Popular

Pro

$49/mo

  • 100 GB/month ingested
  • 30-day retention
  • Unlimited team members
  • Schema validation
Start Free Trial

Enterprise

Custom

  • Unlimited volume
  • 1-year retention
  • SSO & Audit Logs
  • Dedicated support
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