Agentmemory Launcher for OpenCode

OpenCode plugin that auto-starts the agentmemory backend with health-check supervision.

Requirements

• Node.js ≥ 18.0.0
• OpenCode with plugin support
• agentmemory backend (auto-installed via npx @agentmemory/agentmemory if not present)

Note: This plugin has only been tested on Windows 11. If you need support for other platforms, pull requests are welcome.

What It Does

This plugin automatically starts the agentmemory backend (REST API + iii-engine) when OpenCode loads its configuration. It runs once per OpenCode process and health-checks the backend every 60 seconds, restarting it if the process dies.

Installation

From npm (recommended)

Add to your OpenCode config:

// opencode.json
{
  "plugin": ["opencode-agentmemory-launcher@latest"]
}

OpenCode will automatically install the package at startup. See the OpenCode Plugins documentation for more details.

From local file

Place the plugin file in .opencode/plugins/:

.opencode/plugins/
└── agentmemory-launcher.ts

Files in this directory are automatically loaded at startup.

Manual Installation (from GitHub Releases)

1. Download agentmemory-launcher.ts from the latest GitHub Release
2. Place it in .opencode/plugins/:

.opencode/plugins/
└── agentmemory-launcher.ts

OpenCode loads .ts files from .opencode/plugins/ automatically at startup.

Usage

This launcher starts the agentmemory backend. To use agentmemory with OpenCode, also install the agentmemory plugin and refer to the OpenCode agentmemory plugin usage guide for setup instructions, available tools, and configuration options.

Updating

To update agentmemory to the latest version:

npx @agentmemory/agentmemory upgrade

After updating, stop the running agentmemory process and clear the npx cache:

Windows (PowerShell):

# Stop the agentmemory process
Get-Process -Name "node" | Where-Object {
    (Get-CimInstance Win32_Process -Filter "ProcessId = $($_.Id)").CommandLine -match 'agentmemory'
} | Stop-Process -Force

# Clear the npx cache
Get-ChildItem "$env:LOCALAPPDATA\npm-cache\_npx" -Directory | Where-Object {
    Test-Path "$($_.FullName)\node_modules\@agentmemory"
} | Remove-Item -Recurse -Force

Restart OpenCode to relaunch agentmemory with the updated version.

How It Works

1. On first config load: The plugin starts a health-check interval (60s)
2. Health check: Pings GET /agentmemory/livez on the backend (public, no auth)
3. Auto-restart: If the health check fails, spawns npx @agentmemory/agentmemory in a detached process
4. Debug mode: Set OPENCODE_AGENTMEMORY_DEBUG=1 for verbose logging

Environment Variables

| Variable | Default | Description | |----------|---------|-------------| | AGENTMEMORY_URL | http://localhost:3111 | Backend API URL | | OPENCODE_AGENTMEMORY_DEBUG | unset | Set to 1 for debug logging |

API

The plugin exports a single object conforming to the @opencode-ai/plugin interface:

import type { Plugin } from "@opencode-ai/plugin";

export const AgentmemoryLauncherPlugin: Plugin;

This plugin implements the config lifecycle hook, which is called each time OpenCode loads its configuration.

Development

# Install dependencies
npm install

# Type-check
npm run typecheck

# Build
npm run build

# Run tests
npm test

Community

• Contributing Guide
• Code of Conduct
• Security Policy

License

GNU Affero General Public License v3.0

Copyright

Copyright (C) 2026 Cle2ment.