Find your clientId

Every API call and widget install needs a clientId. It identifies your project and starts with client_.

If you are signed in, every code snippet in these docs already shows your real clientId. Copy any snippet and it is ready to run.

1. Onboarding: after signing up, the first screen shows your clientId inside the install snippets.
2. Settings: open your project, then Settings. The integration snippets there contain your clientId.
3. Any dashboard URL: the first path segment after usero.io/ is your clientId, for example usero.io/client_abc123/....

Send a test submission with your clientId (the Quickstart has one-line examples), then confirm it landed:

curl "https://usero.io/api/feedback/check?clientId=YOUR_CLIENT_ID"

Once your submission has arrived (it checks the last 15 minutes), the response looks like:

{ "received": true, "feedbackId": "abc123", "lastReceivedAt": "2026-06-08T05:00:00.000Z", "source": "api" }

{"received": false} means nothing has arrived in that window yet. Check the clientId in your test submission and try again.

• Quickstart: send your first feedback with one POST
• Widget: drop-in feedback button, no form to build