opencode-seiz-setup

Cross-platform installer for opencode preconfigured with the oh-my-opencode-slim multi-agent plugin, the SeizAI provider, MCP servers, the Zellij multiplexer, and bundled skills.

One command takes a clean machine (Windows, macOS, or Linux) to a working opencode setup.

What it installs

• opencode (global, via npm or bun)
• Zellij multiplexer (winget / brew / cargo / distro package manager)
• oh-my-opencode-slim plugin with a per-agent model preset
• SeizAI provider with the full model catalog
• MCP servers: context7, grep_app, github, time, and optionally exa, pinchtab, obsidian-webdav
• Skills: multi-brain and ocs, written to ~/.config/opencode/skills/

Usage

No clone required. Run the one-liner for your OS.

Windows (PowerShell)

irm https://raw.githubusercontent.com/seiz888/opencode-setup/main/setup.ps1 | iex

macOS / Linux

curl -fsSL https://raw.githubusercontent.com/seiz888/opencode-setup/main/setup.sh | bash

The launcher ensures Node.js is present (installing it if needed), downloads setup-opencode.mjs, then runs it to prompt for credentials and write the config.

From a clone

If you prefer to inspect first, clone and run locally:

git clone https://github.com/seiz888/opencode-setup.git
cd opencode-setup
node setup-opencode.mjs        # if Node.js is already installed
# or use the bootstrap launcher: bash setup.sh  /  powershell -ExecutionPolicy Bypass -File setup.ps1

Prompts

The installer asks for:

Prompt	Required	Notes
SeizAI API key	yes	provider auth
Exa MCP api-key	no	leave blank to skip
PinchTab MCP token	no	leave blank to skip
WebDAV URL / user / password	no	for the obsidian-webdav MCP + multi-brain skill

No secrets are hardcoded; everything is entered at runtime and written only to your local ~/.config/opencode/ files.

Idempotent behavior

• If opencode is already installed, it asks before upgrading.
• If a config file already exists, it asks before overwriting (a timestamped .bak is kept).

After install

Open a fresh terminal, then start opencode inside Zellij with a port (required for the multiplexer integration):

zellij
# inside zellij:
OPENCODE_PORT=4096 opencode --port 4096

Then run opencode models --refresh and ping all agents to verify.

Files

File	Purpose
setup.ps1	Windows bootstrap (installs Node, runs the installer)
setup.sh	macOS/Linux bootstrap (installs Node, runs the installer)
setup-opencode.mjs	Cross-platform core installer

License

MIT