Authorization Infrastructure
for the Age of AI Agents
AI agents are executing in enterprise systems right now, sending payments, creating vendors, triggering workflows. Current security models verify access. They do not verify intent. This paper presents the authorization layer that fills that gap.
yebo.dev · hello@yebo.dev · © 2026 Yebo Inc.
Contents
Abstract
AI agents are no longer passive tools. They are active participants in enterprise operations, sending payments, approving vendors, calling APIs, and triggering workflows across critical infrastructure. The security systems enterprises rely on were designed for humans. They verify access. They do not verify intent.
Yebo is the authorization layer that fills this gap. Every AI action is converted into a structured mandate, evaluated against enterprise policy, and, where required, cryptographically bound to a human authorization before it can execute. The result is a deterministic, auditable, and compliant execution layer that sits between AI decision and real-world consequence.
1. The Problem
Enterprise security infrastructure was built for a world where humans initiate actions. The authorization model is linear: identity verified → credentials valid → permission exists → action allowed. In this model, if a user has the right credentials and permissions, action is assumed to be appropriate.
This assumption breaks entirely when applied to autonomous AI agents. Agents make probabilistic decisions. They operate across dynamic, multi-step workflows. They can be manipulated through prompt injection. They act at machine speed, faster than any human review process. And they have no inherent understanding of organizational intent.
The gap is structural: current systems verify who is acting. They do not verify whether the action should happen right now, under these conditions, with this context.
Illustrative scenario
An AI agent is instructed: "Pay this vendor $25,000."
Execution proceeds. But what the system did not evaluate:
The system behaved exactly as designed. It verified access. It did not verify intent.
2. The Missing Layer
Enterprises today have identity systems, authentication systems, permission systems, and audit systems. What they do not have is a universal layer that answers one question at the moment of execution:
"Should this action execute right now, under these conditions, with this context?"
That is the missing layer. That is what Yebo provides.
3. The Yebo Solution
Yebo replaces the legacy execution pattern, Login → Session → Action, with a model built for autonomous agents:
Intent → Mandate → Policy → Authorization → Execution → Audit
Every AI action proposed through Yebo is converted into an AP2 Mandate, a deterministic, time-bound, cryptographically-bound structure that captures who is acting, what is being proposed, the exact parameters, the policy constraints active at that moment, and a unique nonce that prevents replay. Mandates are immutable once created.
The mandate is evaluated against enterprise policy in milliseconds. Every evaluation produces exactly one of three outcomes: Allow, Require Approval, or Deny. There is no fourth state. This creates clarity, consistency, and auditability.
4. Human Authorization
When policy requires human approval, Yebo generates a challenge delivered to the authorized approver's mobile device. The human reviews the exact proposed action and approves using Face ID or Touch ID. This triggers an hardware-bound cryptographic signature inside the device's Secure Enclave, the isolated cryptographic processor that ensures the private key never leaves hardware.
The result is a PAI token (Proof of Authorized Intent) that cryptographically binds the specific action, the identity of the authorizer, the moment of authorization, and the policy in effect. It cannot be replayed, forged, or transferred. It expires in five minutes.
5. The YAC Open Standard
Every completed authorization generates a Yebo Authorization Certificate (YAC), an open-standard cryptographic receipt that proves the full authorization chain. YACs are signed with hardware-bound cryptography, hash-chained (tamper-evident), exportable for compliance audits, and independently verifiable by any third party.
The YAC specification is publicly available at yebo.dev/yac. Any party can implement verification independently without relying on Yebo infrastructure.
6. Compliance Coverage
| Framework | Yebo Coverage |
|---|---|
| SOC 2 Type II | Complete audit trail, access control evidence, authorization chain for every action |
| EU AI Act | Human oversight documentation for high-risk AI decisions, exportable evidence |
| SOX | Immutable authorization chain for financial transactions, policy version control |
| HIPAA | Biometric-authorized data access, patient authorization artifacts, audit export |
7. Integration
Yebo integrates with the Model Context Protocol (MCP), the emerging standard for AI tool access, meaning any MCP-compatible agent (Claude, Cursor, Windsurf, and others) can be governed by Yebo with a single configuration block. A REST API supports custom integrations. Execution adapters connect to payment providers, enterprise software, and internal APIs.
Yebo does not replace existing infrastructure. It governs execution across it.
8. Getting Started
Yebo offers a 14-day pilot starting with one workflow. We implement one policy package and deliver a full audit trail of every action blocked, approved, or escalated, plus a policy blueprint for the broader rollout. No commitment required.
Contact: hello@yebo.dev · yebo.dev/contact
Developer quickstart: yebo.dev/developer
© 2026 Yebo Inc. Version 1.0, March 2026. This document is provided for informational purposes. Specifications subject to update. For the latest information, visit yebo.dev.
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