Quickstart
Snippet to first event in the live tail in about two minutes. Start here.
kilden_ docs
One event stream. Analytics, feature flags, email campaigns and session replay built on top of it — not bolted together.
Everything runs on the same events
Section titled “Everything runs on the same events”Instrument once. Every feature reads the same stream, the same persons, the same identity graph — a funnel, a flag rollout, a campaign trigger and a session replay all agree on who did what.
Identify & verify users
Link anonymous visitors to signed-in users, and let your backend prove identity with a signed token so nobody can spoof events.
Feature flags
Deterministic rollouts targeted by traits and cohorts, evaluated in milliseconds. How flags work.
Campaigns
Event-triggered email journeys with exactly-once sends and delivery events flowing back into analytics. Campaigns guide.
Session replay
Sampled, privacy-first recordings, joinable 1:1 with the event timeline. Replay guide.
HTTP API
// for AI tools
Your AI editor already knows Kilden
@kilden/mcp gives Claude Code, Cursor and Claude Desktop searchable access to everything on this site — no API key, no setup beyond one command. And every page here is machine-readable: /llms.txt,/llms-full.txt, or append .md to any URL.