> ## Documentation Index
> Fetch the complete documentation index at: https://www.agentworldprotocol.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> Spec and SDK releases, newest first.

<Update label="2026-08" description="licensing & ecosystem">
  Reference-code license set to Apache-2.0 with a no-CLA contribution policy. Ecosystem directory pages (worlds, agents) and the ACP comparison added.
</Update>

<Update label="2026-08" description="spec v0.1 draft">
  Initial public draft of the Agent World Protocol: four-layer architecture, lockstep and streaming time models, action lifecycle, command channels, first-class task instruction, safety model (grants, envelopes, approval, audit log), six profiles, and error registry. The relay-transport, command-channel, task, follow\_trajectory, elicitation, and capabilities proposals were folded into the draft specification text.
</Update>