Huawei Huawei Huawei Huawei Workloads in multi-system environments, including AI agents acting on behalf of users and organizations, increasingly present multiple credentials of heterogeneous types within a single request: workload identity tokens, user-delegated OAuth access tokens, W3C Verifiable Presentations, X.509 certificates, or platform-specific API keys. These are issued by different authorities, follow different formats, are verified by different verifiers, and carry different assurance semantics. A relying party that receives such a heterogeneous credential set has no common way to represent the set, identify each credential's type, determine the authoritative verifier for it, interpret verification results consistently, or combine multiple results into a single handling decision. This document defines a mechanism for processing a heterogeneous credential set on receipt. It specifies a representation of the credential set, a procedure for identifying each credential's type and determining its verifier, a minimal common model for verification results that lets results from different verifiers be compared, and a policy model that combines multiple results into one handling decision. The mechanism is transport-agnostic and does not constrain where the processing functions are deployed.