Identity establishes the actor.
Know whether the actor is a person, workload, machine or autonomous principal and who is accountable for it.
- Attributable principal
- Valid authority origin
- Current policy and trust
- Enforceable action decision
One system, several kinds of principals
A human signs in through an identity provider, a workload presents a service credential, a machine has a device or platform identity, and an agent may act through several tools. Each is a principal, but the evidence used to establish it differs. A reliable identity record should identify the principal, its owner, its origin and the credential or session context used for a request.
Attribution matters when an agent acts after a human interaction. The person who initiated a task, the organization that operates the system and the agent that issued an API call should not collapse into one vague “user” field. Those relationships are essential to later review.
- Human identity and sign-in context
- Workload and service identity
- Machine or device identity
- Autonomous principal and owner attribution
Authentication is a foundation
OAuth 2.0, OpenID Connect and SAML can establish delegated API access and federated sign-in. MFA can strengthen a human authentication event. Session management maintains authenticated state across requests. These existing controls help establish a trustworthy actor; API authorization and RBAC can limit conventional resource access.
A token can identify a caller and carry scopes, but it usually cannot explain why an autonomous sub-agent may make a specific change to a payment, clinical record or production system. That requires an authority origin, purpose, limits and current policy.
Lifecycle and continuity
Identity has a lifecycle: creation, ownership, credential issuance, rotation, suspension and retirement. Long-lived non-human identities deserve particular care because they often continue operating without a person present. Changes to owner, workload or credential posture should become signals to reevaluate downstream access and authority.
ProofGrid’s architectural model treats identity as the start of a traceable chain, not as permanent permission. Its expanded autonomous controls are intended to connect that chain to the decision at the point where an action could cause an outcome.
Attribution through an agent stack
An API server may see a service account, while the actual request began with a human who assigned a task to an agent running inside a shared workload. A useful identity model preserves all of those relationships. It does not pretend that the human is the direct caller, nor does it let the shared workload identity erase the logical agent. Attribution should include the agent, its owning organization or team, the runtime or machine that hosted it, and the initiating task when available.
This becomes especially important when work moves through queues and delegated agents. A downstream executor needs trusted identity context from the upstream system, not an unverified free-text assertion that the agent writes about itself. If that context is missing, high-risk action should not silently inherit a broad machine credential.
Identity proof has a lifecycle
Human, workload, device and agent identities each have issuance and revocation concerns. A human can leave an organization, a workload can be redeployed, a machine can change operator and an agent can be retired. Credentials may rotate independently of a task. The authorization design must decide which changes invalidate existing grants and which simply require renewed authentication.
OAuth scopes, OIDC claims, SAML assertions, MFA events and session state are useful sources of identity and access context. Their exact semantics depend on the issuing system. ProofGrid carries those facts into the authority decision over whether an identified actor remains permitted to cause the requested outcome.
- Credential provenance and rotation
- Owner and deployment environment
- Agent-task binding
- Suspension and retirement
- Identity change impact on grants
Platform / Next Step