better-auth-tenancyMulti-tenant auth for Better Auth

Tenant-scoped users, per-tenant OAuth, and management APIs — as a Better Auth plugin.

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Tenant-scoped users

The same email can sign up under different tenants as separate users. Sessions, accounts, and verification records are scoped by tenant.

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Platform users get owner / admin / member roles on tenants they manage, with a full membership CRUD API.

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Optional invite-only sign-up and email-domain allowlists. Tenant-scoped email verification via GET /tenant/verify-email.

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Store OAuth client credentials per tenant in the database, encrypted at rest. Fall back to global providers when no tenant config exists.

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Create, update, list, and delete tenants, members, invites, and OAuth configs through typed Better Auth endpoints.

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Adds schema, endpoints, and a client plugin that integrate with Better Auth's adapter, session, and social provider systems.