How do I install the Yggdrasil skill?

Run npx skillmds@latest add dvcrn/yggdrasil 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.

Is Yggdrasil safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: CAUTION, Skill Scanner: PASS. 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?

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 free to use?

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

Who published Yggdrasil?

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

Yggdrasil by dvcrn — Agent Skill

Name: Yggdrasil
Rating: 4.2 (5 reviews)
Author: dvcrn

File contents

Yggdrasil Setup

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

Quick Reference

Situation	Action
"Is P2P working?" / "Can I connect?"	`yggdrasil_check()`, explain result
"What is my address?" (first time)	`yggdrasil_check()` to confirm routable
`p2p_send_message` fails	`yggdrasil_check()` to diagnose
Yggdrasil not installed	Guide through install (see `references/install.md`)
User asks what Yggdrasil is	Explain briefly, offer to install

Interpreting yggdrasil_check Results

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

Troubleshooting derived_only

If yggdrasil_check() returns derived_only after install:

Binary not on PATH: Run which yggdrasil. If not found, add to PATH or reinstall.
Gateway not restarted: The plugin detects the binary at startup. Restart the OpenClaw gateway.
Permission denied: On Linux, Yggdrasil needs CAP_NET_ADMIN to create a TUN interface. Run as root or use setcap.
Docker: Container needs --cap-add=NET_ADMIN and --device=/dev/net/tun.

After Install

Restart the OpenClaw gateway.
The plugin detects Yggdrasil, generates a config, and starts the daemon automatically.
Call yggdrasil_check() to confirm the routable 200: address.

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

---name: yggdrasildescription: Diagnose Yggdrasil installation and daemon status for IPv6 P2P connectivity. Use when P2P fails, user asks about connectivity, or Yggdrasil needs to be installed.---# Yggdrasil SetupYggdrasil gives every OpenClaw agent a globally-routable `200::/8` IPv6 address derived from their Ed25519 keypair. Without it, P2P addresses are local-only.## Quick Reference| Situation | Action ||---|---|| "Is P2P working?" / "Can I connect?" | `yggdrasil_check()`, explain result || "What is my address?" (first time) | `yggdrasil_check()` to confirm routable || `p2p_send_message` fails | `yggdrasil_check()` to diagnose || Yggdrasil not installed | Guide through install (see `references/install.md`) || User asks what Yggdrasil is | Explain briefly, offer to install |## Interpreting yggdrasil_check Results| Address type | Meaning | Tell the user ||---|---|---|| `yggdrasil` | Daemon running, globally routable | Ready. Share the address with peers. || `test_mode` | Local/Docker only | Fine for testing on the same machine. Not reachable by internet peers. || `derived_only` | Yggdrasil not running | Address is NOT reachable. Install Yggdrasil first. |## Troubleshooting derived_onlyIf `yggdrasil_check()` returns `derived_only` after install:1. **Binary not on PATH**: Run `which yggdrasil`. If not found, add to PATH or reinstall.2. **Gateway not restarted**: The plugin detects the binary at startup. Restart the OpenClaw gateway.3. **Permission denied**: On Linux, Yggdrasil needs `CAP_NET_ADMIN` to create a TUN interface. Run as root or use `setcap`.4. **Docker**: Container needs `--cap-add=NET_ADMIN` and `--device=/dev/net/tun`.## After Install1. Restart the OpenClaw gateway.2. The plugin detects Yggdrasil, generates a config, and starts the daemon automatically.3. Call `yggdrasil_check()` to confirm the routable `200:` address.See `references/install.md` for platform-specific install commands.

Frequently asked questions

Yggdrasil