SCN Chat #

An AI assistant chat app where each conversation lives in a permissioned space on the user's own PDS, built to be forked and extended.

Extension #

Fork: A copy of this project that a programmer changes and runs as their own app. The web app is extended by changing a fork's code. Avoid: Web plugin, extension, customization

Plugin: A package installed with the server that adds to it, such as a model provider, a tool, or a turn hook. Avoid: Extension, add-on

Plugin instance: One plugin an admin has added in the admin area, with its own options. A plugin is added once, unless it allows several instances. Avoid: Plugin config, plugin entry

Tool: A capability a plugin offers that the model can call during a turn. Avoid: Function, action

Part view: The component that shows one kind of message part, chosen by the part's type. Avoid: Renderer, widget

Tool view: The component that shows one tool's call and result together, chosen by the tool's name. Avoid: Tool UI, tool renderer

Tool status: Where a tool call stands: running, done, error, or incomplete. Derived from the call, its result, and the message. Avoid: Tool state, phase

Steps: A run of consecutive reasoning parts and tool calls in one reply, shown folded together. Avoid: Tool group, chain of thought

Message action: A control under a message, like copy, edit, regenerate, or stop. Avoid: Message button, hover action

Access #

Role: A named group of users, held through explicit membership, a matching PDS host or handle domain, or a plugin's answer. Roles decide invites and admin models. Avoid: Group, permission

Viewer: A signed-in user without access to the chat app, who can only open chats shared with them. Avoid: Guest, read-only user

Turns #

Fallback model: The model a turn runs with when it names none: the model of the nearest completed reply up the branch, else the user's default model, else the admin's. Avoid: Default model (that is the user's preference), inherited model

Reply follower: What follows each pending reply in the open conversation until its final record arrives: it shows the reply's stream as it comes, and checks for the record when the stream can't tell. Avoid: Reply stream (that is the stream itself), live reply

Look #

Theme: The design tokens, for light and dark, that set the web app's look. Forkers and the designer edit it, and users only get the system's light or dark mode. Avoid: Skin, style, appearance