---
title: "Glossary"
description: "The words Treehouse uses, and what each one means in the app and in these docs."
canonical_url: "https://trytree.house/docs/help/glossary"
last_updated: "2026-09-29"
---

# Glossary

The words Treehouse uses, and what each one means in the app and in these docs.

| Term | Meaning |
| --- | --- |
| **Activity** | The feed of every change in a workspace, marking which came from people and which from agents. See [activity](https://trytree.house/docs/sharing/activity). |
| **Agent** | An AI teammate that works in your workspace, through a synced folder or the MCP server. See [how agents work](https://trytree.house/docs/agents/connect/how-agents-work). |
| **AGENTS.md** | A file at the workspace root holding the rules agents follow. See [write your AGENTS.md](https://trytree.house/docs/playbooks/write-your-agents-md). |
| **API key** | A credential that lets an agent or script act as you. Labelled as agent or human, which decides how its changes are attributed. See [API keys](https://trytree.house/docs/agents/connect/api-keys). |
| **Calendar view** | A folder of markdown files with `date:` front matter, shown as a month calendar. See [folder pages](https://trytree.house/docs/files/folder-pages). |
| **Comment thread** | A review conversation attached to text in a markdown file. See [comments](https://trytree.house/docs/sharing/comments). |
| **Conflicted copy** | The second of two colliding edits, kept as its own file so nothing is lost. See [conflicted copies](https://trytree.house/docs/files/conflicted-copies). |
| **Device** | A computer running the desktop app or sync CLI, approved in the browser for one workspace. |
| **Folder front page** | A folder's `README.md`, `index.md` or `index.html`, shown when you open the folder. |
| **Front matter** | YAML between `---` lines at the top of a markdown file, holding metadata such as `title` and `date`. See [front matter](https://trytree.house/docs/files/front-matter). |
| **Inbox** | A folder where anything can be dropped unsorted and filed later, usually by an agent. See [inbox and filing](https://trytree.house/docs/playbooks/inbox-and-filing). |
| **MCP server** | The Treehouse endpoint agents connect to, at `https://api.trytree.house/api/mcp`. See [MCP server](https://trytree.house/docs/agents/reference/mcp-server). |
| **Member** | A person who has joined a workspace. Members are Owners, Admins or Members. |
| **Member link** | A link to a file or folder that only works for members. |
| **Private** | A file or folder only the person who marked it, and their own keys, can see. |
| **Public link** | A read-only link to a file or folder that works for anyone who has it, optionally with a password. See [share links](https://trytree.house/docs/sharing/share-links). |
| **Seedling, Grove, Forest** | The Treehouse plans. See [plans and limits](https://trytree.house/docs/account/plans-and-limits). |
| **Synced folder** | A folder on your computer kept in step with a workspace by the desktop app or CLI. See [how sync works](https://trytree.house/docs/desktop/how-sync-works). |
| **Version** | A saved state of a file. Every save adds one, and earlier versions can be restored. See [version history](https://trytree.house/docs/files/version-history). |
| **Workspace** | A set of files and folders with its own members. Everything in Treehouse lives in one. |