Install the Plugin

Plugin

The plugin runs inside your coding agent (Claude Code or Cursor). It reuses the MCP server provided by the Archcore CLI, so you install the CLI first, then the plugin on top.

Prerequisite: install the CLI

The plugin depends on archcore mcp being on your PATH. If you don’t have the CLI yet, see the CLI install guide.

Quick check:

archcore --version

If this prints a version, you’re good.

Install the plugin

From your shell:

claude plugin marketplace add archcore-ai/archcore-plugin
claude plugin install archcore@archcore-plugins

Or, from within Claude Code:

/plugin marketplace add archcore-ai/archcore-plugin
/plugin install archcore@archcore-plugins

Install from the Cursor plugin marketplace, or locally:

cursor --plugin-dir ./archcore-plugin

Cursor support is implemented but has a slightly different hooks API — see Supported Hosts.

Clone the plugin repo and point your host at it directly:

git clone https://github.com/archcore-ai/archcore-plugin
claude --plugin-dir ./archcore-plugin    # Claude Code
cursor --plugin-dir ./archcore-plugin    # Cursor

Local mode is useful when hacking on skills or hooks.

Initialize your project

The plugin expects .archcore/ to exist. If you haven’t run archcore init yet:

cd your-project
archcore init

Verify

Restart your coding agent so the session-start hook can run.
In a fresh conversation, run:
```
/archcore:help
```
You should see a list of available skills and intent commands.
Try an intent command on a real decision:
```
/archcore:adr choose PostgreSQL as primary database
```
The agent should create a draft ADR in .archcore/ via MCP — not via direct file writes.

If /archcore:* commands don’t appear, check Troubleshooting.

Uninstall

Claude Code:

/plugin uninstall archcore@archcore-plugins

Cursor: remove Archcore from plugin settings.

Next steps

Supported hosts — confirm your host supports the features you need.
Intent commands — the 8 commands you’ll use most.
Tracks — multi-step workflows for product, architecture, standards.