PostHog
See which tools agents actually use.
Enable it
npx klaridian generate --spec ./api.yaml --out ./my-server --plugin posthogEvery tool call sends a PostHog event with the tool name, how long it took, and whether it succeeded. This tells you which tools get used—OpenTelemetry tells you if a call is slow or broken, but not whether anyone's calling it.
Configure it
POSTHOG_API_KEY=phc_... \
POSTHOG_HOST=https://app.posthog.com \
node dist/src/index.jsWhy this is a separate plugin from OTel
Tracing has one open standard—OpenTelemetry—so one otel plugin works with every backend. Product analytics doesn't have that: PostHog, Amplitude, and Mixpanel each need their own integration. posthog is the first; amplitude and mixpanel work the same way.
Code mode
With --architecture code-mode, the execute_code event also carries api_call_count and api_operations: how many API calls the script made and which operations they were. Arguments and response bodies aren't sent.
One plugin at a time
Today you can pick one plugin per server—otel, or one of the analytics plugins, not both together. Combining an engineering plugin and a product plugin on the same server is planned, not built yet.