OpenCode Arc

Official npm-style OpenCode plugin package for arc workflow integration.

Install

Add the package to your OpenCode config:

{
  "plugin": ["@sentiolabs/opencode-arc"]
}

OpenCode installs plugin packages automatically with Bun. After enabling the plugin, run arc onboard in each project root to resolve the active Arc project and load current work context.

Provided surfaces

• Fail-open arc prime automation on session.created and session.compacted.
• /arc-* commands registered from this package's bundled command markdown.
• arc-* helper agents registered from this package's bundled agent markdown.
• Arc workflow skills exposed through this package's bundled skills/ directory.

The legacy copy-based installer can still install the same commands, agents, skills, and runtime hook from this directory for local development or environments that do not use package plugins yet.

Target surfaces

• OpenCode web sessions
• OpenCode interactive CLI sessions
• Attached sessions for verification and testing (proof still pending)

Testing-only target

• opencode run (proof still pending)

Contract

• arc prime automation is fail-open; missing or unhealthy arc must not block OpenCode startup.
• OpenCode commands, agents, and skills remain explicitly prefixed with arc.
• The OpenCode workflow is sequential and subagent-driven.
• This plugin does not claim worktree-isolated parallel execution.