OpenCode v1.2.8: Adaptive Thinking & MCP Responses

OpenCode v1.2.8 adds adaptive thinking for Claude Sonnet 4.6, collapsible MCP responses in the TUI, and fixes a critical desktop launch bug.

OpenCode v1.2.8: Adaptive Thinking & MCP Responses

TL;DR

  • Claude Sonnet 4.6 now supports adaptive thinking in OpenCode
  • Custom tool and MCP call responses are now visible and collapsible in the TUI
  • Desktop app black screen on launch fixed

New

  • Adaptive thinking for Claude Sonnet 4.6 — Extended thinking mode now available for Sonnet 4.6, letting the model reason through complex problems before responding.
  • Custom tool and MCP call responses — Tool and MCP responses are now visible and collapsible in the TUI, giving you better control over output visibility.

Fixed

  • Black screen on launch with sidecar server — Desktop app no longer hangs on startup.
  • Clear todos on abort — Todo list now properly clears when aborting operations.

Update with: npm install opencode@latest or check the release page for your platform.

Source: OpenCode