ATH (Agent Trust Handshake) is a protocol that lets AI agents access your users’ data on external services — but only after both the service AND the user say yes. It’s OAuth for the agent era. That’s it. Two gates, both must pass. The agent gets the intersection of what was approved — never more.

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Who Are You?

Pick the path that matches your situation. Each is a self-contained tutorial.
1

I have an app and want agents to access my API securely

You’ll add ATH endpoints to your existing backend. Takes ~100 lines of code.Go to: Add ATH to Your App →
2

I want to put a trust layer in front of existing services (GitHub, Google, etc.)

You’ll deploy a gateway. Zero changes to upstream services.Go to: Set Up a Gateway →
3

I'm building an agent that needs to call ATH-protected APIs

You’ll use our SDK (TypeScript/Python) or CLI tool.Go to: Build an Agent →

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But First

Before diving into any path, we recommend two things:
  1. Learn the basics of JWT & OAuth — if you’re not already familiar, this 10-minute read explains the two technologies ATH builds on, with real-world examples.
  2. Run the demo — 5 minutes to see the entire protocol working in a real e-commerce app. You’ll understand everything much faster.