New session

ahpc opens on a new session, and ctrl+n opens one from anywhere.

The first message starts the session, and the screen becomes the session.

The agent

The host serves the agents, which the protocol calls harnesses. The first chip picks one, such as Claude or Copilot. Each host has its own list. See Agents.

The fields

Below the composer, each chip is a field the host sends. The agent and the host each send their own, so the fields change with the host and with the agent you pick. ahpc draws a chip for a field it does not know too.

The usual fields:

Field	In the picture
Agent	Agent Demo	Which agent runs the session
Model	default	The model the next message runs on
Mode	Interactive	How the agent works: step by step, plan first, or on its own
Permissions	Writes	Which tools wait for your approval
Folder	notes-app	The workspace on the host
Isolation	Folder	Work in the folder itself, or in a new worktree beside it. Only for a git repository
Branch	main	The branch to work from. Only for a git repository

plain in the picture is a field of the demo agent's own. Another host may send fewer fields, or others.

The folder chip opens a folder dialog over the host's own directories. Workspace path in the palette takes a typed path instead.

Keys

Key
enter	Send
alt+enter	Newline
tab	Move through the field rows
/	Slash commands, from the host and from ahpc. See Customizations
@	Complete a file path on the host
ctrl+g	Edit the message in $VISUAL or $EDITOR
esc	Close the menu, leave the field, then go to the session list

The composer takes the editing keys too.