Loggui v1.2·Clean and lightweight monitoring

Real-time monitoring
made simple

Built for indie hackers or small teams who want instantaneous debugging and zero configuration friction.

$npm install @opentelemetry/sdk-node @opentelemetry/auto-instrumentations-node
Native OpenTelemetry OTLP
loggui-console // live-stream [production]
LIVE TAIL
p50 Latency24 msmedian
p90 Latency85 ms90th %
p95 (Tail)195 msworst 5%
Avg CPU Usage44.2%14 vCPUs
14:21:08.214INFOapi-gatewayGET/api/v1/catalog/items[200]Catalog cache hit; returned 48 items to downstream client
14:21:09.552INFOauth-servicePOST/api/v1/auth/token[200]OAuth authorization grant verified for client application
14:21:11.083INFOsearch-indexerGET/api/v1/search/query[200]Search query parsed with 12 filters, returned 120 hits in 52ms
14:21:12.640INFOcheckout-workerPOST/api/v1/orders/create[201]Order created successfully; inventory reservation confirmed
14:21:14.901WARNbilling-enginePOST/api/v1/checkout/charge[402]Card decline: insufficient funds on authorization attempt
Showing live simulated stream. Click below to inspect deep stack traces and filter queries.
< 12ms
p50 Ingestion Latency
99.999%
Telemetry Pipeline Uptime
< 4 MB
Client Agent Memory Footprint
30s
Zero-Config Time-to-Telemetry
Engineered for Developer Velocity

Everything you need for debugging, nothing you don't.

Datadog’s core debugging workflows distilled into an ultra-fast, lightweight dashboard designed for engineers on the front line.

Real-Time Log Stream & Syntax Query

Live tail stream with pause/resume, speed control ($1\times, 2\times, 5\times$), and sub-second token search (service:billing, status:500).

Try live stream

URL Latency Percentiles (p50, p90, p95)

Analyze true tail latencies across all API routes. Spot slow PSP checkouts and runaway SQL queries before users experience latency degradation.

View latency graphs

Resource Consumption (CPU & Memory)

Dual-panel resource telemetry tracking CPU utilization against an 80% threshold and memory allocation (V8 GC Heap vs Total RSS).

Check resource charts

Intelligent Error Signature Grouping

Group duplicate exceptions automatically. Track occurrence sparklines, first/last seen timestamps, and manage issue resolution lifecycles.

Explore error groups

Multi-App & Microservice Inventory

Connect Node.js, Python, Go, Rust, or Ruby services in seconds. Monitor individual error rates, throughput, and node health side by side.

Browse monitored apps

Built-in Anomaly & Incident Simulator

Simulate Postgres connection pool exhaustion, Stripe PSP gateway timeouts, or memory pressure surges to test alerting and triage on demand.

Trigger simulated events
Native OpenTelemetry (OTel) Standard

Zero vendor lock-in. 100% OpenTelemetry.

Send standard OTLP (gRPC / HTTP) traces, logs, and metrics directly from your OpenTelemetry SDK or OpenTelemetry Collector. No proprietary agents required.

// 1. Install standard OpenTelemetry packages:
// npm install @opentelemetry/sdk-node @opentelemetry/auto-instrumentations-node \
//             @opentelemetry/exporter-trace-otlp-http @opentelemetry/exporter-metrics-otlp-http

import { NodeSDK } from '@opentelemetry/sdk-node';
import { getNodeAutoInstrumentations } from '@opentelemetry/auto-instrumentations-node';
import { OTLPTraceExporter } from '@opentelemetry/exporter-trace-otlp-http';
import { OTLPMetricExporter } from '@opentelemetry/exporter-metrics-otlp-http';
import { PeriodicExportingMetricReader } from '@opentelemetry/sdk-metrics';

// Configure OpenTelemetry SDK sending directly to Loggui OTLP
const sdk = new NodeSDK({
  serviceName: 'billing-api',
  traceExporter: new OTLPTraceExporter({
    url: 'https://otlp.loggui.dev:4318/v1/traces',
    headers: { 'Authorization': 'Bearer lg_live_secret_key' }
  }),
  metricReader: new PeriodicExportingMetricReader({
    exporter: new OTLPMetricExporter({
      url: 'https://otlp.loggui.dev:4318/v1/metrics'
    }),
    exportIntervalMillis: 5000
  }),
  instrumentations: [getNodeAutoInstrumentations()]
});

sdk.start();

// Or run with Zero-Code CLI Auto-Instrumentation:
// NODE_OPTIONS="--require @opentelemetry/auto-instrumentations-node/register" \
// OTEL_EXPORTER_OTLP_ENDPOINT="https://otlp.loggui.dev:4318" \
// OTEL_SERVICE_NAME="billing-api" node server.js
Early Access

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Pricing is not public yet. Leave your email and we will invite you when Loggui opens.

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Be first in line for OTLP logs, spans, and metrics in a lightweight console.

Frequently Asked Questions

Clear answers to common questions about Loggui’s architecture and usage.

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Join thousands of developers tracking live logs, tail latencies, and resource spikes with Loggui.