5.2 PTERI for AI Authority

PTERI treats AI agents as principals, not tools.

A principal must have:

• Identity

• Authority

• Limits

• Accountability

With PTERI

AI agents gain:

• Cryptographic identities

• Explicit authority via signatures

• Scoped permissions

• Revocable access

And they lose:

• Static secrets

• Implicit trust

• Silent escalation

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The new model

Instead of asking:

“Does this API key work?”

Systems ask:

“Does a valid signature exist for this exact intent?”

An AI agent:

1. Requests an action

2. Receives a scoped challenge

3. Obtains explicit authorization

4. Executes only what was approved

No signature → no action.

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Why this matters

This model ensures:

• Every AI action is attributable

• Every action has provable intent

• Authority can be limited and revoked

• Abuse is cryptographically detectable

AI becomes auditable, not just powerful.

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