v2.0.0 v0.186.0
microsoft/agent-host-protocolJun 10, 2026 → Jun 10, 20261 day between releases
Building the comparison
Reading what changed between v2.0.0 and v0.186.0. This page updates automatically — usually within a minute.
The Two Releases
ECC 2.0.0 — The Agent Harness Operating System
Jun 10, 2026· 5 months ago
v2.0.0 marks the stable graduation of ECC as a cross-harness operating system, enabling a unified environment for skills, rules, and hooks across multiple AI agents like Claude Code and Codex. It introduces a new control pane for session management and expands the ecosystem with 261 skills and 64 agents.
Full release notesv0.186.0
Jun 10, 2026· 5 months ago
This release introduces Windows sandbox snapshots and forking, upgrades the dashboard React Router to v7, and includes fixes for DNS caching and volume ID path traversal bugs.
Full release notes