Generated banner for Instrument Error Tracking
Generated logo for Instrument Error Tracking

Instrument Error Tracking

PostHogOfficialCreated by PostHog

  • Skill
  • Tool integration
  • Data and AI
  • MIT
  • Low risk

From the author

Add PostHog error tracking to capture and monitor exceptions. Use after implementing features or reviewing PRs to ensure errors are tracked with stack traces and source maps. Also handles initial PostHog SDK setup if not yet installed.
— the description by PostHog

AutoGineer summary

Written by AutoGineer from the skill’s own files, not by the author

This skill provides a structured procedure for instrumenting your codebase with PostHog error tracking. It guides the agent through detecting your platform, installing the necessary SDK, enabling exception autocapture, and configuring manual error boundaries. It also ensures that environment variables are handled securely and that source maps are correctly configured for frontend and mobile projects, allowing for clear, actionable debugging.

What it does

  • Detects your project's platform and framework automatically.
  • Installs and initializes the PostHog SDK if not already present.
  • Enables automatic exception capture for unhandled errors.
  • Assists in adding manual error capture at critical boundaries.
  • Configures source map uploads for readable stack traces.
  • Sets up required environment variables for secure API communication.

When to use it

  • After implementing new features to ensure robust error monitoring.
  • During code reviews when you identify a need for better exception visibility.
  • When setting up a new project and wanting to include error tracking from the start.
  • When you need to resolve minified stack traces in your production logs.

Advantages

  • Ensures consistent error tracking patterns across different platforms.
  • Reduces manual setup effort by automating SDK installation and configuration.
  • Promotes secure practices by enforcing the use of environment variables.
  • Improves debugging efficiency by linking errors to original source code via source maps.

Usage examples

“Set up PostHog error tracking for my React project.”
The agent will detect the React environment, install the PostHog SDK, enable autocapture, and guide you through setting up the necessary environment variables.
“I need to track errors in my Node.js backend using PostHog.”
The agent will identify the Node.js environment, configure the SDK, and help you place manual capture points in your catch blocks.

Install

  1. Download the skill as a ZIP:

    https://mp-staging.autogineer.com/agent-skills/posthog/instrument-error-tracking/download
  2. Unzip it into the cross-client skills folder of your project:

    mkdir -p .agents/skills && unzip instrument-error-tracking.zip -d .agents/skills

Documentation by PostHog

Add PostHog error tracking

Use this skill to add PostHog error tracking that captures and monitors exceptions in your application. Use it after implementing features or reviewing PRs to ensure errors are tracked with full stack traces and source maps. If PostHog is not yet installed, this skill also covers initial SDK setup. Supports any platform or language.

Supported platforms: React, Next.js, Web (JavaScript), Node.js, Python, PHP, Ruby, Ruby on Rails, Go, Elixir, Angular, Svelte, Nuxt, React Native, Flutter, iOS, Android, and Hono.

Instructions

Follow these steps IN ORDER:

STEP 1: Analyze the codebase and detect the platform.

Look for dependency files (package.json, pubspec.yaml, Podfile, Package.swift, requirements.txt, go.mod, Gemfile, composer.json, mix.exs, etc.) to determine the language and framework.

Look for lockfiles (pnpm-lock.yaml, package-lock.json, yarn.lock, bun.lockb, go.sum, pubspec.lock, Podfile.lock, Package.resolved, mix.lock) to determine the package manager.

  • Check for existing PostHog setup (SDK initialization, env vars, etc.). If PostHog is already installed and initialized, skip to STEP 4.

STEP 2: Research instrumentation. (Skip if PostHog is already set up.) 2.1. Find the reference file below that matches the detected platform — it is the source of truth for SDK initialization, exception autocapture, and framework-specific error tracking patterns. Read it now. 2.2. If no reference matches, fall back to your general knowledge and web search. Use posthog.com/docs as the primary search source.

STEP 3: Install and initialize the PostHog SDK. (Skip if PostHog is already set up.)

  • Add the PostHog SDK package for the detected platform. Do not manually edit package.json — use the package manager's install command.

  • Follow the framework reference for where and how to initialize.

STEP 4: Enable exception autocapture.

  • Follow the platform reference to enable exception autocapture. This automatically captures unhandled exceptions without additional code.

STEP 5: Add manual error captures.

  • Identify error boundaries, catch blocks, and critical user flows where errors should be explicitly captured.

  • Add posthog.captureException() or the platform-equivalent at these locations.

  • Do not alter the fundamental architecture of existing error handling. Make additions minimal and targeted.

  • You must read a file immediately before attempting to write it.

STEP 6: Upload source maps (frontend/mobile only).

  • Configure source map uploads so stack traces resolve to original source code, not minified bundles.

  • Follow the platform-specific reference for upload configuration (build plugins, CI scripts, etc.).

STEP 7: Set up environment variables.

  • Check if the project already has PostHog environment variables configured (e.g. in .env, .env.local, or framework-specific env files). If valid values already exist, skip this step.

  • If the PostHog project token is missing, use the PostHog MCP server's projects-get tool to retrieve the project's api_token. If multiple projects are returned, ask the user which project to use. If the MCP server is not connected or not authenticated, ask the user for their PostHog project token instead.

  • For the PostHog host URL: check the projects-get MCP response for a region field — US maps to https://us.i.posthog.com, EU maps to https://eu.i.posthog.com. If the region is not available from the MCP response or from existing project configuration, ask the user: "Are you on PostHog US Cloud or EU Cloud?" Do not assume US Cloud.

  • Write these values to the appropriate env file using the framework's naming convention.

  • Reference these environment variables in code instead of hardcoding them.

STEP 8: Verify and clean up.

  • Check the project for errors. Look for type checking or build scripts in package.json.

  • Ensure any components created were actually used.

  • Run any linter or prettier-like scripts found in the package.json, but ONLY on the files you have edited or created during this session. Never run formatting or linting across the entire project's codebase.

Reference files

  • references/react.md - React error tracking installation

  • references/web.md - Web error tracking installation

  • references/nextjs.md - Next.js error tracking installation

  • references/node.md - Node.js error tracking installation

  • references/python.md - Python error tracking installation

  • references/django.md - Django

  • references/flask.md - Flask

  • references/php.md - Php error tracking installation

  • references/laravel.md - Laravel

  • references/ruby.md - Ruby error tracking installation

  • references/ruby-on-rails.md - Ruby on rails error tracking installation

  • references/ruby-on-rails.md - Ruby on rails

  • references/go.md - Go error tracking installation

  • references/dotnet.md - .net error tracking installation

  • references/dotnet.md - .net

  • references/elixir.md - Elixir error tracking installation

  • references/angular.md - Angular error tracking installation

  • references/svelte.md - Sveltekit error tracking installation

  • references/nuxt-3-7.md - Nuxt error tracking installation (v3.7 and above)

  • references/nuxt-3-6.md - Nuxt error tracking installation (v3.6 and below)

  • references/react-native.md - React native error tracking installation

  • references/flutter.md - Flutter error tracking installation

  • references/ios.md - Ios error tracking installation

  • references/android.md - Android error tracking installation

  • references/hono.md - Hono error tracking installation

  • references/fingerprints.md - Fingerprints

  • references/alerts.md - Send error tracking alerts

  • references/monitoring.md - Monitor and search issues

  • references/assigning-issues.md - Assign issues to teammates

  • references/upload-source-maps.md - Upload source maps

  • references/COMMANDMENTS.md - Framework-specific rules the integration must follow

Each platform reference contains SDK-specific installation and manual capture patterns. Find the one matching the user's stack.

Key principles

  • Environment variables: Always use environment variables for PostHog keys. Never hardcode them.

  • Minimal changes: Add error tracking alongside existing error handling. Don't replace or restructure existing code.

  • Autocapture first: Enable exception autocapture before adding manual captures.

  • Source maps: Upload source maps so stack traces resolve to original source code, not minified bundles.

  • Manual capture for boundaries: Use captureException() at error boundaries and catch blocks for errors that don't propagate to the global handler.

Files

references/react-native.md

AI agents: this is one page from PostHog's docs. Full index of Markdown docs for LLMs: https://posthog.com/llms.txt

React Native Error Tracking installation

Canonical URL: https://posthog.com/docs/error-tracking/installation/react-native

Cloud region: This page uses US Cloud hosts. For an EU Cloud project, use https://eu.i.posthog.com instead of https://us.i.posthog.com (ingestion host), and use https://eu.posthog.com instead of https://app.posthog.com (app host for links).

On this page

  • Install with the wizard

  • Install the package

  • Configure PostHog

  • Send events

  • Set up exception autocapture

  • Set up error boundaries

  • Manually capture exceptions

  • Future features

  • Verify error tracking

  • Upload source maps & native symbols

  • iOS dependency resolution for native crash capture

Install with the wizard

Run this command in your project directory to add PostHog to your React Native project. The wizard detects your framework, installs the SDK, and sets up your first events.

npx @posthog/wizard

Or set it up manually by following the rest of this guide.

  1. 1

    Install the package

    Required

    Install the PostHog React Native library and its dependencies:

    Expo
    npx expo install posthog-react-native expo-file-system expo-application expo-device expo-localization
    yarn
    yarn add posthog-react-native @react-native-async-storage/async-storage react-native-device-info react-native-localize
    
    # for iOS
    cd ios && pod install
    npm
    npm i -s posthog-react-native @react-native-async-storage/async-storage react-native-device-info react-native-localize
    
    # for iOS
    cd ios && pod install
  2. 2

    Configure PostHog

    Required

    PostHog is most easily used via the PostHogProvider component. Wrap your app with the provider:

    App.tsx

    import { PostHogProvider } from 'posthog-react-native'
    
    export function MyApp() {
        return (
            <PostHogProvider
                apiKey="<ph_project_token>"
                options={{
                    host: "https://us.i.posthog.com",
                }}
            >
                <RestOfApp />
            </PostHogProvider>
        )
    }
  3. 3

    Send events

    Recommended

    Once installed, PostHog will automatically start capturing events. You can also manually send events using the usePostHog hook:

    Component.tsx

    import { usePostHog } from 'posthog-react-native'
    
    function MyComponent() {
        const posthog = usePostHog()
    
        const handlePress = () => {
            posthog.capture('button_pressed', {
                button_name: 'signup'
            })
        }
    
        return <Button onPress={handlePress} title="Sign Up" />
    }
  4. 4

    Set up exception autocapture

    Recommended

    Client-side configuration only

    Support for remote configuration in the error tracking settings requires SDK version 4.35.0 or higher.

    You can autocapture exceptions by configuring the errorTracking when setting up PostHog:

    React Native

    export const posthog = new PostHog('<ph_project_token>', {
      errorTracking: {
        autocapture: {
          uncaughtExceptions: true,
          unhandledRejections: true,
          console: ['error', 'warn'],
          nativeCrashes: true, // native iOS/Android crashes (see below)
        },
      },
    })

    Configuration options:

    OptionDescription
    uncaughtExceptionsCaptures Uncaught exceptions (ReactNativeGlobal.ErrorUtils.setGlobalHandler)
    unhandledRejectionsCaptures Unhandled rejections (ReactNativeGlobal.onunhandledrejection)
    consoleCaptures console logs as errors according to the reported LogLevel
    nativeCrashesCaptures native iOS/Android crashes. Requires @posthog/react-native-plugin and uploaded native symbols (see below)

    Capturing native crashes

    nativeCrashes captures native iOS and Android crashes that the JavaScript layer can't see. Beyond the config above, it needs:

    1. The optional native plugin installed — npx expo install @posthog/react-native-plugin (Expo) or npm i @posthog/react-native-plugin (bare React Native). If it's missing, native capture is a no-op and your JS-level autocapture is unaffected.

    2. Your project's Enable exception autocapture setting enabled in error tracking settings — the same server-side setting that gates JavaScript autocapture.

    3. Native debug symbols uploaded at build time, so crash stack traces are readable. See native crash symbolication.

  5. 5

    Set up error boundaries

    Optional

    You can use the PostHogErrorBoundary component to capture rendering errors thrown by components:

    React Native

    import { PostHogProvider, PostHogErrorBoundary } from 'posthog-react-native'
    import { View, Text } from 'react-native'
    
    const App = () => {
      return (
        <PostHogProvider apiKey="<ph_project_token>">
          <PostHogErrorBoundary
            fallback={YourFallbackComponent}
            additionalProperties={{ screen: "home" }}
          >
            <YourApp />
          </PostHogErrorBoundary>
        </PostHogProvider>
      )
    }
    
    const YourFallbackComponent = ({ error, componentStack }) => {
      return (
        <View>
          <Text>Something went wrong!</Text>
          <Text>{error instanceof Error ? error.message : String(error)}</Text>
        </View>
      )
    }

    Duplicate errors with console capture

    If you have both PostHogErrorBoundary and console capture enabled in your errorTracking config, render errors will be captured twice. This is because React logs all errors to the console by default. To avoid this, set console: [] on errorTracking.autocapture (for example, errorTracking: { autocapture: { console: [] } }) when using PostHogErrorBoundary.

    Dev mode behavior

    In development mode, React propagates all errors to the global error handler even when they are caught by an error boundary. This means you may see errors reported twice in dev builds. This is expected React behavior and does not occur in production builds.

  6. 6

    Manually capture exceptions

    Optional

    You can manually capture exceptions using the captureException method:

    React Native

    try {
      // Your awesome code that may throw
      someRiskyOperation();
    } catch (error) {
      posthog.captureException(error)
    }

    This is helpful if you've built your own error handling logic or want to capture exceptions that are handled by your application code.

  7. 7

    Future features

    Optional

    We currently don't support the following features:

    • No automatic source map uploads on React Native web

    This will be added in a future release. We recommend you stay up to date with the latest version of the PostHog React Native SDK.

  8. Verify error tracking

    Recommended

    Confirm events are being sent to PostHog

    Before proceeding, let's make sure exception events are being captured and sent to PostHog. You should see events appear in the activity feed.

    Image: Activity feed with events

    Check for exceptions in PostHog

  9. 8

    Upload source maps & native symbols

    Required

    Great, you're capturing exceptions! The next step is to upload source maps (for JavaScript stack traces) and native symbols (for native iOS/Android crash symbolication) so PostHog can generate accurate stack traces.

    Let's continue to the next section.

    Upload source maps & native symbols

iOS dependency resolution for native crash capture

CocoaPods is becoming read-only. CocoaPods has announced the following schedule for its public specs repository:

  • November 2–6, 2026: A read-only dry run will prevent us from publishing new PostHog iOS SDK versions to CocoaPods.

  • December 2, 2026 onward: The repository will be permanently read-only. New PostHog iOS SDK versions will only be available through Swift Package Manager (SPM).

Existing iOS SDK versions will remain available through CocoaPods. To keep receiving iOS SDK updates, migrate the native plugin's posthog-ios dependency to SPM using the hybrid CocoaPods and SPM setup, or use full SPM integration if your app supports it. The hybrid path keeps CocoaPods for the plugin and other React Native dependencies.

This change does not affect @posthog/react-native-plugin releases on npm or Android.

The @posthog/react-native-plugin package supports CocoaPods, the hybrid CocoaPods and Swift Package Manager path, and React Native's full Swift Package Manager integration. PostHog verifies the full path with an iOS-only React Native 0.87.1 app and React Native Community CLI 20.2.0. This path requires @posthog/react-native-plugin 2.4.0 or later, Xcode 16 or later, and an iOS 15.1 or later app deployment target.

See iOS dependency paths for the React Native native plugin for the requirements and setup steps. This verification does not cover Expo or other React Native versions. Use CocoaPods or the hybrid path unless you validate full Swift Package Manager for your configuration.

Requirements and compatibility

Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Needs: Needs an MCP server, Needs Python, Needs Node.js

Security

What our scanner noticed· Low risk

  • Instructions that use the network

A static scan is not a guarantee. Skills are third-party content: review a skill before you let an agent use it.

Attribution and licence

Created by
PostHog
Publisher
PostHog (Official)
Source
PostHog/skills · skills/omnibus/instrument-error-tracking · commit a5d30e7
Licence
MIT License (redistribution allowed)
  • LICENSE (added by AutoGineer from LICENSE)
  • ATTRIBUTION.md (written by AutoGineer)
Synced

AutoGineer is not affiliated with or endorsed by PostHog.

Download ZIP

The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download instrument-error-tracking.zip