What Why How It Works Capabilities Use Cases Draft Spec

Open Behavior Settlement Standard

X208 Protocol

A Code Symbol of a Technological Shift

Behavior Settlement Standard for AI & Web3.
Making actions verifiable, composable, and settleable.

// Value is no longer derived only from outcomes, but from actions.

What is X208

X208 is an open protocol standard for describing, authorizing, and settling behavior across AI agents, decentralized applications, and autonomous systems.

X208 is not:

  • Not a payment system
  • Not a financial product
  • Not an application or platform

Why X208

  • Behavior is becoming a new production factor.
  • Existing systems can settle results, not processes.
  • Behavior settlement must exist at the protocol level.

How It Works

Action Event Authorization Settlement Receipt Composition

Every action becomes a verifiable settlement event and produces composable outputs.

Core Capabilities

Behavior Settlement Events (BSE)

Canonical event structure for recording behavior-level intent and execution.

Context-aware Rulesets

Deterministic rules that bind behavior to context, policy, and constraints.

Dynamic Weight Engine

Configurable weighting across actors, signals, and execution paths.

Multi-path Settlement

On-chain, off-chain, and channel-based settlement primitives.

Composable Receipts

Receipts that can be referenced, chained, and reused by other systems.

Use Cases

Representative domains where behavior-level settlement becomes a protocol concern.

  • AI Agent Economy
  • GameFi & Interactive Systems
  • DAO Governance
  • Social Protocols
  • PayFi & RWA Infrastructure