errpulse

The error monitoring tool that runs with one command. Catch every error — frontend and backend — in a real-time dashboard. Zero config. Zero cost. One npx command.

Quick Start

npx errpulse
# => ErrPulse running at http://localhost:3800

Then add the SDKs to your app:

npm install @errpulse/node   # Backend: Node.js, Express, Next.js
npm install @errpulse/react  # Frontend: React

// Backend — zero-config auto-capture
import "@errpulse/node";

// Frontend — wrap your app
import { ErrPulseProvider } from "@errpulse/react";

<ErrPulseProvider endpoint="http://localhost:3800">
  <App />
</ErrPulseProvider>;

Open http://localhost:3800 — see all errors in real-time.

CLI Commands

| Command | Description | | ----------------------------- | -------------------------- | | npx errpulse | Start server on port 3800 | | npx errpulse start --port N | Start on a custom port | | npx errpulse status | Check if server is running | | npx errpulse clear | Clear all stored data | | npx errpulse help | Show help |

What You Get

• Real-time dashboard with 4 views: Overview, Errors, Requests, and Logs
• Catches everything — uncaught exceptions, unhandled rejections, failed fetches, React crashes, console.error, console.log/warn/info/debug (opt-in), resource failures, memory warnings
• Frontend + Backend correlation — trace a user's click to the server error it caused
• Plain-English explanations — 46 built-in patterns explain errors in human-readable language with fix suggestions
• Console log capture — opt-in capture of console.log/warn/info/debug to a dedicated Logs dashboard section
• Multi-project — monitor multiple apps from one dashboard
• SQLite storage — zero-setup, runs entirely local
• Light/Dark mode — toggle themes in the dashboard

Dashboard

The dashboard at http://localhost:3800 provides:

• Overview — Health score, error count, request count, error rate, real-time feed
• Errors — Filterable list with sparklines, keyboard shortcuts (j/k/r/a/i), inline quick actions
• Requests — HTTP request log with expandable detail panels (headers, body, response)
• Logs — Console output viewer with level/source filtering, search, real-time streaming
• Project selector — filter all views by project
• Clear all — project-scoped data clearing with confirmation dialog

Packages

| Package | Description | | -------------------------------------------------------------------- | ------------------------------------------------ | | @errpulse/node | Backend SDK for Node.js, Express, Next.js | | @errpulse/react | Frontend SDK for React | | @errpulse/server | Express API + SQLite + WebSocket + Dashboard | | @errpulse/core | Shared types, fingerprinting, error explanations |

Documentation

• Full Documentation
• GitHub Repository

License

MIT