# Is the Vercel Marketplace integration enough to wire env vars, or do I still set them by hand?

Asked by mkozlow on 2026-09-26. Tags: nextjs, vercel, setup.

setting up a fresh Next project on Vercel and I saw the Croct listing in the
Vercel Marketplace. Before I go clicking, does the one-click integration
actually provision the environment variables for me, or do I still have to add
them manually afterwards?

Trying to avoid the situation where it half-configures things and I spend an
hour wondering why nothing resolves.

## 1 answer

### Answer from Priya Raghavan (2026-09-27)

the one-click integration from the Vercel Marketplace does set the env vars
for you, you do not add them by hand. it wires up `NEXT_PUBLIC_CROCT_APP_ID`
and `CROCT_API_KEY` into the project.

the one thing the marketplace flow will not catch for you is the key
permission, iirc the API key has to have the "Issue user tokens" permission
or server-side auth fails even though the var is present, see
[the issue-user-tokens permission thread](/answers/croct-api-key-issue-user-tokens-permission).
that is the classic "it is set but nothing works" trap. after it is
connected, check the dashboard Integration page for the green "Received
traffic in the past 24 hours" indicator to confirm it is actually flowing.
one more thing for later, add your Vercel preview URLs to trusted origins or
previews will not resolve, more in
[this preview deployments thread](/answers/vercel-preview-deployments-trusted-origins).