Sentinel Docs

These are the terms that show up everywhere in Sentinel.

Workspace

A workspace is the project container.

It usually points at a local folder on disk.

A thread is the unit of work.

It keeps messages and the rest of the state around the task.

An engine is the runtime layer for a thread.

Sentinel supports sentinel, codex, claude, and copilot.

Chat mode is the normal back-and-forth thread mode.

Plan mode stores a plan document, tasks, and question sets as thread state.

A worktree is a separate repo checkout path tied to a thread.

A checkpoint is saved repo state tied to thread history.

An approval is a pause before a tool or tool group runs.

A sub-agent is delegated work stored as child thread state.

A skill is an installable package of behavior or instructions.

An MCP server is an external tool server connected over stdio or http.

An integration is a built-in connection to an outside system.