Federated Trust For AI & Machine Identities

The Cross-Organization Challenge

AI agents won't live in a single walled garden. They connect with SaaS services, partner APIs, and cross-cloud platforms—creating cross-boundary interactions with significant security hurdles.

The solution: A standardized, automated identity trust framework that both sides adhere to—built on OAuth 2.1, Trust Registries, DCR, and OpenID Connect Federation.

Federation Capabilities In Agent Authority

• Trust registries keep a governed list of the external organizations and AI agents allowed to integrate with your systems, and block unknown or unverified parties by default.
• Controlled onboarding admits a partner only after security vetting, and binds its identity to its OAuth client through public keys or certificates.
• Secure dynamic client registration lets approved external AI agents register themselves via API, protected by initial access tokens, signed software statements and signed requests.
• OpenID Connect Federation 1.0 establishes trust automatically between parties with no prior relationship, through signed entity statements that chain back to an agreed trust anchor.
• Every external agent gets least-privilege access through scopes, Rich Authorization Requests and policy-controlled federation, checked per request.
• Removing a partner from the trust registry cuts off all of its connections in one action, and an expired certificate is denied on the next request.
• Every cross-organization access goes through your authorization server and is logged with its federation context.

How Federation Works

1. 1

   Register The Partner In A Trust Registry

   The partner organization passes security vetting and is added to your trust registry, with its identity bound to its public keys or certificates.

2. 2

   Verify The Entity Statement

   The external AI client presents its signed entity configuration and a trust chain of entity statements, which SecureAuth validates back to a trust anchor you accept.

3. 3

   Register The Client Dynamically

   The agent calls the dynamic client registration endpoint with a signed software statement, and SecureAuth checks it against the trust registry before creating a client profile with appropriate scopes.

4. 4

   Issue A Token Bound To The Agent

   The agent presents the verifiable credentials bound to it in the registry during the OAuth flow, and SecureAuth issues a short-lived access token scoped to that agent.

5. 5

   Authorize Each Request At The Resource

   Your MCP server or API validates the token on every call and enforces its scopes per action, so a partner removed from the registry is denied on its next request.

6. 6

   Audit Every Cross-Organization Call

   Each access by the external agent goes through your authorization server and is logged with its federation context, giving you a full record of what it did in your domain.

Trust Registries & Controlled Onboarding

A Trust Registry is a governed list of which external parties are trusted to integrate with your system. It acts as a security gatekeeper for federation—unknown or unverified parties are blocked. For background, read about the public launch of the Agent Trust Registry.

OpenID Connect Federation 1.0

OIDC Federation enables policy-governed, automated trust establishment among parties with no direct prior relationship. Your authorization server and an external AI provider's system can dynamically establish mutual trust through signed metadata and agreed-upon trust anchors. Our article on automated trust with OpenID Federation walks through trust chains and accreditation in more depth.