Documentation

App Use documentation

Everything needed to understand and adopt the open protocol — the model an app declares, the tools an agent calls, how security and consent work, how hubs federate across devices, and how to make your own app agent-drivable.

GETTING STARTED

Start here

Overview →

What App Use is, the problem it solves, and the three-layer model in plain terms.

5-minute quickstart →

Add the SDK, implement the surface, host it — with real code.

CONCEPTS

How it fits together

Architecture →

The four runtime components — surface, endpoint, hub, console — and how a call flows.

Glossary →

Every key term — AppSpec, surface, hub, cluster, audit chain — in one place.

PROTOCOL SPEC

The open standard

The AppSpec model →

Screens, elements, flows, events — the declarative shape an app publishes.

MCP tool reference →

The full app.* and apps.* vocabulary, with risk levels.

SECURITY & SCALE

Governance and many devices

Security & consent →

Capability scopes, the human-in-the-loop consent gate, the audit chain, secret redaction.

Federation →

Clusters of hubs, LAN mTLS, the end-to-end-encrypted relay, revocation and audit.

Accessibility →

How App Use supports accessibility — including color-vision deficiency — plus an audit checklist and agent prompt.