You can for a read-only, single-system agent, but not for one that acts across systems. A platform’s native RBAC governs access inside that platform, which is enough when an agent only reads or works in one system. Once an agent writes, transacts, or spans the ERP, the CRM, and other systems, native roles cannot evaluate cross-system context or broker a scoped token for the whole stack. That is where a policy-enforced execution bridge adds a role check, an ABAC context check, and a per-action token across systems, above any iPaaS.