What is posthog?
posthog is a MCP server by PostHog that interact with PostHog analytics, feature flags, error tracking and more. It is listed under Developer tools and has 40,331 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | PostHog |
| Repository | PostHog/posthog |
| Popularity | 40,331 GitHub stars |
| Category | Developer tools |
| Security | Review before installing (76/100) |
| Rank | #17 of 4,418 MCP servers; #9 in Developer tools |
| Last commit | 2026-10-18 |
| Stars this week | +110 |
| Runs | Cloud service |
| Language | TypeScript |
Is posthog safe to install?
posthog scores 76/100 on the MCPMods security check: Review before installing. Things to review: sends your data to a cloud service; can take actions such as send, write or deploy. It passed 4 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Published by the service itself | Pass |
| Sends your data to a cloud service | Review |
| No credentials mentioned | Pass |
| Can take actions such as send, write or deploy | Review |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install posthog?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/PostHog/posthog/tree/master/services/mcp
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add posthog -- <command from README> claude mcp add --transport http posthog <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs posthog for you:
Add the "posthog" MCP server from https://github.com/PostHog/posthog/tree/master/services/mcp to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.