How do I install the Yggdrasil Setup skill?

Run npx skillmds add modbender/yggdrasil-setup in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the Yggdrasil Setup skill do?

Diagnose and guide Yggdrasil installation so the agent can establish globally-routable IPv6 P2P connections. It is listed under AI & ML on SkillMD.

Is Yggdrasil Setup safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Yggdrasil Setup?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Yggdrasil Setup free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Yggdrasil Setup?

modbender (@modbender) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Yggdrasil Setup by modbender — Agent Skill

Name: Yggdrasil Setup
Rating: 4.666666666666667 (3 reviews)
Author: modbender

File contents

Yggdrasil Setup Skill

Yggdrasil gives every OpenClaw agent a globally-routable 200::/8 IPv6 address derived from their Ed25519 keypair. Without it, P2P addresses are local-only and unreachable by peers on other machines.

When to use

Situation	Action
User asks "is P2P working?" or "can I connect?"	Call `yggdrasil_check()`, explain the result
User asks "what is my address?" for the first time	Call `yggdrasil_check()` to confirm it is routable
`p2p_send_message` fails	Call `yggdrasil_check()` to diagnose
User says Yggdrasil is not installed	Guide through installation (see `references/install.md`)
User asks what Yggdrasil is	Explain briefly, then ask if they want to install

Interpreting yggdrasil_check results

Address type	Meaning	What to tell the user
`yggdrasil`	Daemon running, address is globally routable	Ready. Share the address with peers.
`test_mode`	Local/Docker only	Fine for testing on the same machine/network. Not for internet peers.
`derived_only`	Yggdrasil not running	Address is NOT reachable. Install Yggdrasil first.

After install

Tell the user: "Restart the OpenClaw gateway. The plugin will detect Yggdrasil automatically and start the daemon — no extra configuration needed."

Then call yggdrasil_check() again to confirm the daemon started and show the real routable address.

See references/install.md for platform-specific install commands.

Frequently asked questions