BuildWithHQ is the platform where builders create, configure, and resell branded SaaS to their own tenants.
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Protected by rate limiting · repeated failures trigger a short lockout.
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Sign in to your builder account. If your email belongs to more than one organization, you’ll pick which one to enter — but only after your password checks out, so the sign-in screen never reveals anything to someone who doesn’t know it.
Repeated wrong guesses trigger a short lockout. If you’ve forgotten your password, the Forgot link sends a one-time reset link to your email.
sp_Auth_GetLoginCandidates returns candidate rows; the API verifies the password before disclosing anything.sp_Auth_CheckAndRecordLoginAttempt (throttle) → verify hash app-side → sp_Builder_RecordLogin + sp_Auth_RegisterSession.Implement this scaffold from the structured contract, then remove hard-coded preview rows. The source of truth is CLI Handoff and admin-cli-manifest.json.
Server-inject identity and scope values; never trust browser-supplied account, app, tenant, user, entitlement, price, or permission identifiers. Preserve the loading, empty, forbidden, failed, retrying, and completed states shown by the preview.