Credential scoping means limiting what a token, API key, session, or login can do. Instead of giving one credential broad access, defenders bind it to a narrow set of resources, actions, and time limits. A scoped credential may only read one repository, call one service, or operate inside one environment.
This matters because stolen or misused credentials are a common path to deeper compromise. If an attacker captures a token, tight scoping reduces the blast radius and makes lateral movement harder. In real defenses, teams use least privilege, short-lived tokens, separate identities for testing and production, and per-service permissions. In agentic systems, credential scoping is especially important: an automated agent that gets too much access can accidentally reach external systems, modify real data, or expose secrets during evaluation. Good scoping turns a possible full-system incident into a constrained, auditable event.