> ## Documentation Index
> Fetch the complete documentation index at: https://docs.arguserror.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Argus: Error Tracking & Performance Monitoring

> Argus catches, groups, and alerts on errors across your browser, Node.js, and React apps — so you know about issues before your users do.

Argus watches your applications in real time, capturing every unhandled exception and grouping duplicate occurrences into a single issue using stack-fingerprinting. Install one of the SDKs, paste your DSN, and start seeing errors in your dashboard within minutes.

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Instrument your first app and see errors flowing into your dashboard in under 5 minutes.
  </Card>

  <Card title="Core Concepts" icon="lightbulb" href="/core-concepts">
    Understand how DSNs, issues, events, fingerprinting, and alert rules fit together.
  </Card>

  <Card title="SDK Reference" icon="code" href="/sdks/browser">
    Guides for the Browser, Node.js, and React SDKs with copy-paste code examples.
  </Card>

  <Card title="API Reference" icon="rectangle-terminal" href="/api/overview">
    Full REST API reference — ingest, projects, issues, alerts, and more.
  </Card>
</CardGroup>

## How it works

<Steps>
  <Step title="Create a project">
    Sign up, create an organization, and add your first project. Argus generates a unique DSN for each project.
  </Step>

  <Step title="Install an SDK">
    Add the SDK for your platform — Browser, Node.js, or React — and call `init()` with your DSN.
  </Step>

  <Step title="Errors appear automatically">
    Uncaught exceptions and unhandled promise rejections are captured automatically. Duplicate errors are grouped into a single issue so you never see the same noise twice.
  </Step>

  <Step title="Get alerted">
    Set up an alert rule to receive an email or webhook notification the moment a new issue is detected.
  </Step>
</Steps>

## Platform overview

<CardGroup cols={2}>
  <Card title="Issues" icon="triangle-exclamation" href="/platform/issues">
    View, filter, resolve, and ignore grouped error issues from your dashboard.
  </Card>

  <Card title="Alerts" icon="bell" href="/platform/alerts">
    Configure email and webhook notifications for new issues.
  </Card>

  <Card title="Performance" icon="gauge-high" href="/platform/performance">
    Track transaction durations and web vitals across your application.
  </Card>

  <Card title="Usage & Billing" icon="chart-bar" href="/platform/usage-billing">
    Monitor your event quota and upgrade your plan when you need more capacity.
  </Card>
</CardGroup>