PostHog for VS Code
https://github.com/posthog/posthog-vscode- Category
- Developer Tools
- Rank
- No. 982Tools index
- Pricing
- Open Source
- Type
- TOOL
- Builder
- PostHog
- GitHub
- 7 stars
- Latest release
- v0.8.2
- Date
About
PostHog for VS Code brings feature flags, analytics, and product insights directly into your editor.
What it does
It connects authenticated PostHog projects to code references inside VS Code. Developers can inspect flag states, experiment results, event activity, and session counts beside relevant code, then manage flags or watch replays from editor panels.
Why it's ranked here
The extension connects operational product data to the exact code that produces or consumes it. Tree-sitter scanning, autocomplete, diagnostics, navigation, and stale-flag refactoring make it more than a dashboard shortcut. Its value is strongest for teams already committed to PostHog.
What's good
Code intelligence covers flag keys, variants, event names, event properties, initialization settings, and likely event-name typos. Stale-flag scans classify obsolete references and can retain the correct branch during cleanup. Shared project configuration and multi-folder support help teams keep editor behavior consistent.
Tradeoffs
It requires PostHog authentication and project selection, while its registered MCP server uses a separate OAuth flow. Several actions can change flags or experiments, although permission checks can switch users to read-only behavior. Code detection depends on supported tree-sitter grammars and recognizable client or function patterns.
How to use it well
Use it when feature flags, experiments, and event instrumentation are routine parts of development. Commit shared project settings, configure custom client names, and scan periodically for stale branches. Treat it as an editor companion for PostHog workflows, not a replacement for general observability or analytics platforms.
Technical notes+
package.json defines a TypeScript VS Code extension targeting VS Code ^1.93.0, bundled with webpack and published through VS Code and Open VSX tooling. src/extension.ts wires authentication, caches, tree-sitter-backed providers, webviews, diagnostics, CodeLens, code actions, and optional MCP registration through feature detection. src/services/postHogService.ts calls PostHog REST and HogQL endpoints with bearer tokens and retries once after a 401. src/services/configService.ts reads per-folder .posthog.json settings. src/services/codegenService.ts infers TypeScript payload types, limits nested inline inference to three levels, and emits declaration text. src/views/getWebviewHtml.ts assembles the sidebar with a generated nonce and the webview CSP source.
Observed
- License
- MIT
- Primary language
- TypeScript
- Install surface
- VS Code Marketplace and Open VSX Marketplace extension
- Editor compatibility
- VS Code ^1.93.0 and VS Code-based editors
- Interfaces
- VS Code extension UI, Command Palette commands, PostHog REST and HogQL API access, and MCP server registration
- Packaging
- pnpm project bundled with webpack and packaged as a VSIX
- Core dependencies
- posthog-node and web-tree-sitter
Read from README.md, package.json, src/constants.ts, src/extension.ts, src/utils/hogql.ts, src/models/types.ts, src/utils/formatting.ts, src/utils/codeCleanup.ts, src/services/authService.ts, src/views/getWebviewHtml.ts, src/commands/authCommands.ts, src/views/SidebarProvider.ts, src/services/configService.ts, src/services/codegenService.ts, src/services/postHogService.ts.
What it can do
Toggle feature flags
Feature flag configuration → Updated feature flag state
View analytics data
Analytics queries and filters → Charts and metrics visualization
Monitor product insights
User behavior data → Product performance reports
Create feature flags
Flag name and targeting rules → New feature flag configuration
Track code events
Code instrumentation → Event tracking analytics
Debug feature flag behavior
Feature flag code references → Flag evaluation status and logs
Tags
Tech Stack
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