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OpenCode is Tools tier. The installer writes a remote MCP server and installs the skill suite as OpenCode command files. It does not install capture hooks or recall injection. There is no hook surface on this target.

Agent Instructions

Add --backend local or -Backend local for local data storage. See Local-First Setup. See Support Tiers.

What the installer writes

The MCP entry:
A local backend uses http://127.0.0.1:3211/api/mcp. Restart opencode, or start a new session, so it loads the server. Each command file is the skill body with a description frontmatter field. OpenCode does not gain SessionStart, UserPromptSubmit, or Stop hooks from this install. Call crystal_recall when you need past context.

Remove

OpenCode is not in the default uninstall target list. Select it explicitly:
This removes the MCP entry. Delete the installed Crystal command files yourself if you no longer want them; this target does not declare skill cleanup. See Uninstall.