Most AI incidents are not model failures. They are permission design failures.
If one agent can use every tool, every channel, and every credential, your blast radius is your whole stack.
Role-based access checklist
- Define agent roles by job, not by team name.
- Set a default deny posture for tools and channels.
- Approve capability bundles per role instead of per prompt.
- Require explicit review for high-impact tools.
- Log every tool invocation with agent identity and timestamp.
- Review permissions on a fixed cadence.
What good looks like
A content agent should not have deployment tools. An operations agent should not need outbound marketing channels.
When each agent has a narrow permission profile, mistakes stay local and accountability stays clear.
Role-based access is not extra process. It is the operating system for running AI crews safely at scale.