Opalstack already supports OpenClaw. But if you want a minimal footprint clone, you can use Picoclaw.
Git clone the repository
You would need a provider and model id. You can get them from open router.
Sign up for a new telegram bot
Update config.json
Bring up podman
You got your own telegram AI assistant.
Detailed tutorial here: https://www.jjude.com/tech-notes/picoclaw-opalstack/