Before you start
Connect PostHog at https://mcp.posthog.com/mcp?readonly=true. PostHog's docs say experiments over MCP can also end experiments and ship variants, and that read-only mode removes every tool that creates, updates or deletes. Install PM Data Analytics: /plugin marketplace add phuryn/pm-skills, then /plugin install pm-data-analytics@pm-skills.
1
Pull the results
Ask by experiment name. You need the numbers per variant to check the design yourself: exposures, conversions, dates.
Say to ClaudeWhat are the results of my [experiment name] experiment? Give me, per variant, the number of users exposed and converted, the goal metric, the start and end dates, and whether PostHog calls it significant.
2
Check nobody changed it mid-test
PostHog's docs say the agent can read an experiment's audit trail. A change to targeting or rollout while it ran can make the result misleading.
