Agent authority comparisons
Compare where controls make a decision, which task facts they can see and what evidence they leave after an agent acts. Named-platform evaluations cite current vendor documentation and avoid feature scores.
Architecture choices
Find the boundary each control can protect.
A credential, route policy, model guardrail, human approval and executor interlock may all be useful in one system. The right comparison is the concrete operation, its originating grant, the request attributes visible at each boundary and the observed outcome.
01 / Evaluation paths
Control models
Use one real agent action to test where permission is established and enforced.
IAM versus AI agent authorizationWhere does identity management end and an action decision begin?PAM versus agent action authorityWhy can a privileged credential still be insufficient?MCP gateway versus runtime authorizationWhat can an MCP gateway decide, and what belongs at the executor?AI guardrails versus action authorizationWhich risks remain after checking model input and output?Policy engine versus authority infrastructureWhere do grants and effect evidence live around a decision service?Authentication, authorization and authorityWhich question does each control answer for an agent?RBAC, ABAC and delegated authorityWhich model expresses a narrowing task grant?OAuth scopes versus action-level policyWhat does a token scope omit about one consequential call?Human approval versus runtime policyWhich decisions need a person, and what must software still enforce?
02 / Evaluation paths
Named-platform evaluations
Use one real agent action to test where permission is established and enforced.
ProofGrid and PlainID: architecture evaluationHow should a buyer evaluate policy decisions alongside agent grant lineage?ProofGrid and Permit.io: MCP evaluationWhat does a tool-call gateway decision cover in an agent authority chain?ProofGrid and Pomerium: route and action controlWhen does route authorization need downstream action context?ProofGrid and Microsoft Entra Agent IDHow can an agent identity participate in a task-bound action decision?
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