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PTERI Documentation

Cryptographic proof of authority — instead of shared-secret trust.

The internet was designed to move information, not value, and not identity. Identity was bolted on later through passwords, SMS codes, and centralized databases — mechanisms that represent what someone knows, never who someone is.

If a secret can be typed, it can be phished. If it can be stored, it can be breached. If it can be forwarded, it can be replayed.

PTERI replaces shared-secret trust with cryptographic proof of authority, for humans and AI agents alike.

PTERI overview

Start here

If you want to…Go to
Understand the problem PTERI solvesFoundations
See what the platform can doPlatform Capabilities
Grasp the core mental modelThe PTERI Model
Call the APIAPI Reference
Integrate with an SDKSDKs & Integration
Secure AI agents with MCPAI Agents & MCP
See pricing and get accessProduct & Access

How these docs are organized

Concepts — Foundations, The PTERI Model, and Comparisons explain why PTERI works the way it does.

Build — Platform Capabilities, API Reference, SDKs & Integration, and AI Agents & MCP cover how to build on it.

Trust — Architecture & Security, Payments & Identity, Threat Model & Cryptography, and Operations & Scaling document what guarantees you get and how the system behaves at scale.

Product — Use Cases and Product & Access cover what you can build and how to get started.