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fix(auth): send absolute callbackURL on Google sign-up #584

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Merged
0xdevcollins merged 1 commit into from
May 21, 2026
+15 −1
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fix(auth): send absolute callbackURL on Google sign-up #584

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16 changes: 15 additions & 1 deletion components/auth/SignupWrapper.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -27,11 +27,25 @@ const SignupWrapper = ({
setIsLoading(true);
setLoadingState(true);

// Better Auth treats a relative `callbackURL` as relative to the API
// host that handled the OAuth callback (e.g. api.boundlessfi.xyz),
// not the frontend host. The previous default of '/' caused
// successful sign-ups to land on the API host's root, so users saw
// a blank/404 page and thought sign-up had failed — yet the session
// cookie was already set, so a later cache clear silently logged
// them in. Always send an absolute URL pointing at the frontend.
const callbackURL =
typeof window !== 'undefined'
? window.location.origin
: (
process.env.NEXT_PUBLIC_APP_URL || 'https://boundlessfi.xyz'
).replace(/\/$/, '');

try {
await authClient.signIn.social(
{
provider: 'google',
callbackURL: process.env.NEXT_PUBLIC_APP_URL || '/',
callbackURL,
},
{
onRequest: () => {
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