OpenCode Plugin

The OpenCode plugin adds Agentuity-aware AI agents and slash commands to OpenCode, providing intelligent assistance for building, deploying, and managing your agents.

Installation

Install the plugin using the CLI:

agentuity ai opencode install

This configures OpenCode with:

• Specialized AI agents for different development tasks
• Slash commands for common Agentuity operations
• MCP servers for library documentation and code search

To remove the plugin:

agentuity ai opencode uninstall

Specialized Agents

The plugin provides various specialized agents, each focused on a specific aspect of development:

Primary Agents

Sub-Agents

These agents work as sub-agents, called by other agents when needed:

OpenCode automatically routes tasks to the appropriate agent based on context.

Builder vs Architect

Use Builder when working interactively, making quick changes, or needing guidance. Use Architect when running Cadence mode, implementing complex multi-file features, or needing autonomous execution with deep reasoning.

Memory System

The Memory agent uses entity-centric storage to persist context across sessions. It stores:

Memory tracks conclusions (patterns learned from your work), corrections (mistakes to avoid), and relationships between entities. The Reasoner sub-agent periodically extracts new insights from sessions.

Use /agentuity-memory-save to explicitly save important context, or let Memory capture it automatically during Cadence sessions.

Model Configuration

Override any agent's model in opencode.json. See Agent Model Overrides for full configuration options.

Run opencode models to see all available models.

Slash Commands

The plugin adds slash commands for common Agentuity tasks:

Use these commands by typing them directly in OpenCode:

/agentuity-coder Create a new agent that processes webhooks from Stripe

MCP Servers

The plugin configures two MCP servers that provide additional context to the AI agents:

context7: Provides access to library documentation for common dependencies (AI SDK, Zod, Hono, etc.). Agents can look up API references and examples without leaving your editor.

grep_app: Enables searching GitHub repositories for code examples and patterns. Useful when you need to see how others have implemented similar features.

Headless Mode

Run Agentuity tasks from the command line without opening OpenCode:

agentuity ai opencode run "Create an agent that validates email addresses"

This executes the task using the appropriate agents and outputs the result. Useful for:

• CI/CD pipelines that need AI-assisted code generation
• Scripting repetitive development tasks
• Batch processing multiple requests

Cadence Mode

Cadence enables long-running autonomous work sessions. Start it with the /agentuity-cadence slash command:

/agentuity-cadence Build a complete auth system with tests

Control Cadence through natural language:

For headless execution:

agentuity ai opencode run "/agentuity-cadence Build the feature"

Background Agents

Run agents in the background while continuing other work. Background agents execute asynchronously and notify you when complete.

The plugin provides three tools for background task management:

Concurrency Control

Background tasks are rate-limited to prevent overwhelming providers. Configure in your Agentuity CLI profile (~/.config/agentuity/production.yaml):

coder:
  background:
    enabled: true
    defaultConcurrency: 3  # Override the default of 1

Tmux Integration

When running inside tmux, background agents can spawn in separate panes for visual multi-agent execution.

Configure in your Agentuity CLI profile:

coder:
  tmux:
    enabled: true
    maxPanes: 6

When enabled, agents spawn in a dedicated "Agents" window with a tiled grid layout. Oldest panes close automatically when maxPanes is reached.

Configuration

Agent models are configured in ~/.config/opencode/opencode.json. Plugin behavior settings go in your Agentuity CLI profile (~/.config/agentuity/production.yaml).

Agent Model Overrides

Override any agent's default model in opencode.json:

{
  "agent": {
    "Agentuity Coder Builder": {
      "model": "anthropic/claude-opus-4-5-20251101",
      "temperature": 0.7
    },
    "Agentuity Coder Architect": {
      "model": "openai/gpt-5.2-codex",
      "reasoningEffort": "xhigh"
    }
  }
}

MCP Server Configuration

Add MCP servers for enhanced agent capabilities in opencode.json:

{
  "mcp": {
    "context7": { "type": "remote", "url": "https://mcp.context7.com/mcp" },
    "grep_app": { "type": "remote", "url": "https://mcp.grep.app" }
  }
}

Plugin Behavior Settings

Configure plugin behavior in your Agentuity CLI profile (~/.config/agentuity/production.yaml):

coder:
  tmux:
    enabled: true
  background:
    defaultConcurrency: 3

Next Steps

• AI Commands: Other AI-related CLI commands
• Local Development: Run agents locally
• Creating Agents: Build your first agent