Your first visitor ID

Run a local example and see what changes between visits.

Start an existing Doorman engine, then run the relay:

cd examples/go-http
DOORMAN_ENDPOINT=https://identity.your-app.example/api/visitor go run .

It listens at http://127.0.0.1:3001/api/visitor. For local development, the Cloudflare example provides a no-key engine at http://127.0.0.1:8787/api/visitor with local D1. Configure its allowed browser origins for your application. In production mount client.Handler() inside your existing server’s origin/CSRF and rate controls. Optional DOORMAN_GATEWAY_TOKEN requires your own gateway to verify it.

curl -i http://127.0.0.1:3001/api/visitor -H 'Content-Type: application/json' -d '{"signals":{}}'

This is a transport check, not a browser identity benchmark. Use the JavaScript browser client in your frontend for actual signal collection.