Add Kevin's full tool surface to Claude Code, Cursor, or any MCP-compatible client. Two minutes from here to running.
Your device gets 14 days of full access from the moment of first connection. After that, upgrade at iiiai.us/upgrade to keep going.
Sign up for a free trial token at iiiai.us/upgrade. Your token is scoped to your account and rotatable at any time.
Already have one? Skip to step 2.
Kevin tracks trial access per device using your network MAC address. Run the command for your OS:
# macOS ifconfig en0 | grep ether | awk '{print $2}' # Linux ip link show | grep ether | awk '{print $2}' | head -1 # Windows (PowerShell) (Get-NetAdapter | Where-Object Status -eq Up | Select-Object -First 1).MacAddress
Your MAC looks like AA:BB:CC:DD:EE:FF. Keep it handy for the config below.
Paste this into your .mcp.json (Claude Code) or MCP settings (Cursor / Windsurf):
{
"mcpServers": {
"kevin": {
"url": "https://mcp.iiiai.us",
"transport": "http",
"headers": {
"Authorization": "Bearer {YOUR_KEVIN_TOKEN}",
"X-Kevin-Mac": "{YOUR_MAC_ADDRESS}"
}
}
}
}
{YOUR_KEVIN_TOKEN} and {YOUR_MAC_ADDRESS} with your actual values. Never commit your token to a public repo — add .mcp.json to your .gitignore.
In Claude Code, run:
/mcp
You should see kevin listed with a green status. If you get a 402 error, your trial has expired — head to iiiai.us/upgrade.
Publish messages, walk the LVC snapshot, subscribe to real-time event streams from Kevin's Mx bus.
Read and write structured markdown holons from Hank. Full path traversal of your Kevin knowledge vault.
Start, stop, and inspect Kevin platform services. Get live status across the Kevin family.
Subscribe to live event streams from any bus subject. Persistent connection through nginx.
When your trial expires, all MCP calls return HTTP 402 with a link to the upgrade page. Your data and config are preserved — you pick up exactly where you left off after upgrading.
X-Kevin-Mac header is missing from your config. Double-check the headers block./mcp to confirm the server is registered. Restart Claude Code if needed.