agent-zero/plugins/_commands

Commands

YAML-configured slash commands for Agent Zero.

This plugin lets you define reusable /commands as .command.yaml files with either:

• a .txt template body
• a .py script hook

Commands are managed from the plugin modal and can be inserted directly from the chat composer with prefix syntax (/goal objective) or an exact trailing command (objective /goal).

Features

• .command.yaml config files with command metadata
• Text template commands with {} placeholders and parsed args
• Python hook commands with parsed args and optional chat history payload
• Unified parser for positional args, free-form tail, and flags
• Prefix and postfix command resolution for WebUI and remote/AI-sent messages
• Scope-aware command resolution across project and global scopes
• Built-in A0 CLI connector command pack for common session, queue, model, project, browser, and connector status commands
• /stop control that uses the same hard-stop operation as the WebUI composer button
• Slash picker in the chat composer with keyboard navigation and create-on-empty flow

Command File Model

Each command is defined by one config file plus one content file in the same scope directory. Set webui_hidden: true to keep a command resolvable while omitting it from the chat composer picker.

Example text command:

scan.command.yaml

name: scan
description: Scan a Git repository.
argument_hint: /scan --git-url https://github.com/org/repo
type: text
template_path: scan.txt

scan.txt

Please scan repository: {args.flags.git_url}

Raw input:
{raw}

Example python hook command:

optimize.command.yaml

name: optimize
description: Optimize the current request.
argument_hint: /optimize 30%
type: script
script_path: optimize.py
include_history: true

optimize.py

def run(payload):
    args = payload["arguments"]
    pct = args["positional"][0] if args["positional"] else "10%"
    return {
        "text": f"Optimize this response by {pct}.",
        "effects": [],
    }

Argument Parsing

The parser supports:

• Positional input: /scan https://github.com/org/repo
• Postfix input: https://github.com/org/repo /scan
• Long flags: /scan --git-url https://github.com/org/repo
• Long flags with equals: /scan --git-url=https://github.com/org/repo
• Short flags and bundles: /scan -v -q or /scan -vq

Parsed data is available to:

• Text templates via {} placeholders:
  • {raw}
  • {args.positional.0}
  • {args.flags.git_url}
• Python scripts via payload["arguments"]

Script Hook Contract

Python hook file must expose:

def run(payload): ...

It can return:

• str (used as replacement text)
• dict with:
  • text: str (replacement text)
  • effects: list[dict]

Supported frontend effects:

• {"type": "replace_input", "text": "..."}
• {"type": "append_input", "text": "..."}
• {"type": "toast", "level": "info|error|success", "message": "..."}
• Built-in UI effects for existing WebUI actions such as chat switching, modals, attachments, compaction, queue actions, transcript copy, and toast output

Scope Resolution

Commands are discovered from these scope folders:

• Project: usr/projects/<project>/.a0proj/plugins/_commands/commands/
• Global fallback: usr/plugins/_commands/commands/
• Built-in defaults: plugins/_commands/commands/
• Other enabled plugins: plugins/<plugin>/commands/ or usr/plugins/<plugin>/commands/

Precedence in the chat picker:

1. Project
2. Global
3. Built-in _commands
4. Other plugin-distributed commands

Legacy Community Plugin Migration

When the built-in _commands plugin starts, it migrates files from the older community commands plugin namespace:

• Copies usr/plugins/commands/commands/ into usr/plugins/_commands/commands/
• Copies usr/plugins/commands/skills/ into usr/plugins/_commands/skills/
• Copies project and agent scoped plugins/commands/commands/ folders to matching plugins/_commands/commands/ folders
• Skips existing destination files
• Disables the legacy commands plugin roots so the WebUI does not load two slash-command popovers

UI Surfaces

• Plugin modal: manage project/global commands and create editable same-name overrides of bundled commands
• Chat composer: type / at the start or as the final token to browse commands

Agent Skill

The plugin ships with commands-create-slash-command, a plugin-scoped skill that helps Agent Zero create or update command files.