The use case: how Fastr deploys PostHog
Fastr, a conversion rate optimization platform, uses PostHog Endpoints and materialized views as the analytics backend for Fastr Optimize, its CRO and A/B testing product. This lets it deliver a custom dashboard and an AI question-and-answer interface to each e-commerce customer.
In the customer’s words
Endpoints cache well, give us a nice clean surface in front of the data, and we don't have to think about everything we'd need to set up around it if we built a custom API ourselvesOther companies using PostHog
Customers across industries, with public evidence.
11XConfirmed
Arena (LMArena)ConfirmedCloudPeekConfirmed
CounterPressConfirmed
ElevenLabsConfirmed
ExaConfirmedGo straight to the source
Based on PostHog’s published case study. We check the public evidence; the results are reported by the vendor.
posthog.com- Last checked
- Nov 12, 2026
Open source capture What the story claims, and what we checked
What we compared with the page.
- The passage quoted aboveChecked
Copied word for word from the page, near the name of Fastr.
- Fastr uses PostHogChecked
Confirmed line.
- The result itselfNot checked
We quote it; we did not measure it.
The reason Fastr can stamp out a custom dashboard for every customer is their agentic pipeline. Fastr's engineers don't click around the PostHog UI. They write Claude skills that go figure out the current PostHog API, generate the endpoints and materialized views a feature needs, and deploy them.