Secret and redeploy

Symptom

App with login is saved, and the widget still cannot verify clients after you connected Vercel. Signing secret does not show a live secret, or Redeploy now does not finish.

Causes

MODIFEE_SECRET is not on Vercel

Confirm. Settings → Client access → Signing secret says "MODIFEE_SECRET is not on Vercel yet." The section mark says "HMAC secret is not on Vercel yet". If Vercel is not connected, the line is "Vercel not connected — connect or add it manually". If nothing is linked, it is "This project is not linked to a Vercel project."

Fix. Connect Vercel, link the project, and press Set MODIFEE_SECRET on Vercel. The toast is "MODIFEE_SECRET is set on Vercel". The check then reads "MODIFEE_SECRET set on Vercel ✓". That checkmark means the variable is stored on Production, not that the current deployment loaded it. If the variable already exists, the page asks "MODIFEE_SECRET already exists on Vercel. Replace it for production and preview?" Press Replace MODIFEE_SECRET. See Signing secret. MDF-VERCEL-001 when Vercel refuses the call.

A redeploy is still required

Confirm. The checkmark is shown, and the banner says "Redeploy required — the secret applies on the next deployment." The longer line is "The secret is on Vercel, but it only applies on the next deployment." Clients still see "Could not verify your identity. Refresh the page and try again."

Fix. Press Redeploy now. When the latest production deployment is ready and was created at or after the push, the banner says "Deployed ✓ — the widget is live". Preview receives the variable and is not redeployed by this button. Redeploy preview from Vercel, or push a commit. See Redeploy.

Redeploy returns 403

Confirm. The banner switches to "Redeploy from Vercel or push a commit." and offers Update integration permissions. The server reason is "Missing deployment permission."

Fix. In Vercel, open Integrations → modifee → Manage and approve the update. Deployments must be Read and Write for redeploy. Then press Redeploy now again. See Vercel integration. MDF-VERCEL-001.

The Vercel project is not in the list

Confirm. Vercel project does not list the site, or the note says "None of your granted Vercel projects use" the owner/repo name. Refresh does not add it.

Fix. On the Vercel installation page, grant that project under Project Access, then press Refresh in Modifee. If you link a project that does not use this repository, confirm Link anyway. See Vercel integration.