PostHog MCP

PostHog's own hosted MCP server. It gives your agent PostHog's products as tools, so you can ask about your product data, dig into errors and logs, and create feature flags, experiments, dashboards and surveys in plain words. Connecting and calling its tools is free; standard PostHog usage and billing apply to the data your queries use. What you can do with it - Ask analytics questions and get answers from real trends, funnel, paths and retention queries, or run SQL (HogQL) - Find your top errors, pull full stack traces and propose fixes, then resolve issues and set assignment rules - Search logs and check ingestion warnings to see why events were dropped - Create and roll out feature flags, multivariate flags, A/B experiments and early access features - Build dashboards, insights, cohorts, surveys and notebooks - Set up CDP destinations and workflows, such as a Slack message when someone signs up - Triage support tickets, act on change requests, set reminders and search PostHog's docs How it connects PostHog hosts it at https://mcp.posthog.com/mcp. Sign in with OAuth, PostHog's recommended way, and it routes you to your US or EU data region based on your account. If your agent doesn't support OAuth, use a personal API key made with the MCP Server preset as a bearer token. PostHog's wizard (npx @posthog/wizard mcp add) installs it in Claude Code, Claude Desktop, Cursor, Codex, VS Code and Zed, and it's in Claude's connectors directory. PostHog also documents setup for Windsurf, Lovable, Replit and v0. Good to know - Add ?readonly=true to the address to expose only tools that read, never ones that create, update or delete. - Use ?features= or ?tools= to limit it to particular products or tools, and pin it to one organization or project with headers or query parameters. - Most agents see a single exec tool that finds and runs PostHog's tools on demand, which saves context; Cursor gets every tool individually. Add ?mode=tools or ?mode=cli to choose. - Some tools use LLMs and count as PostHog AI spend; they only appear when AI data processing is enabled for your organization. - PostHog advises reviewing tool calls before they run, because of prompt injection. - PostHog also offers a plugin for Claude Code, Codex, Cursor and Gemini CLI that adds slash commands on top of this server.

• “What are the top 5 errors in my project this week?”

  1. query-error-tracking-issues-list
  Copy

• “Show me the full stack trace for the most recent crash, then propose a fix.”

  Copy

• “How many unique users signed up in the last 7 days, broken down by day?”

  1. query-trends
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• “Create a feature flag called new-checkout-flow enabled for 20% of users.”

  1. create-feature-flag

No changes at all? Connect to https://mcp.posthog.com/mcp?readonly=true instead: it only ever offers the tools that read.