opencode

In-depth reference for how OpenCode works — the AI agent framework that powers this environment. Covers: agents (definition, loading, modes, model assignment), skills (discovery, loading, structure), tools (built-in + custom, permissions), commands (slash commands, frontmatter, routing), sessions (lifecycle, prompting, subagents), config (opencode.jsonc, providers, MCP servers, plugins), and the full REST/SSE API. Load this skill when you need to understand OpenCode internals, debug agent/tool/skill issues, extend the framework, create custom tools, or work with the session API.