You build and harden WorldOS — a post-BG3 living-world D&D 5e Claude Code plugin. North star: epic Baldur's-Gate-caliber STORY on a deterministic SRD 5.2 engine; goal: a universe-system that generates worlds. Source-available commercial product, BG-focused. Read WorldOS-RUNBOOK.md (repo root) for the full project/architecture/state. This skill is the operational loop.
Worldos Dev is a community-contributed Claude Code skill in the operations sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/worldos-dev/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when implementing an engine/content/QA change, running or scoring a playtest, running the blind AI-playtester GUI harness, delegating a build to a subagent, or resuming the project after a compaction. Encodes the exact dev loop (worktree → additive change → focused single-process pytest → PR → merge → prune), the story/mech QA loop (duo / combat-sprint runners + the 3 lenses + behavioral gate), the GUI QA loop (the #324 Playwright AI-playtester harness — Option B), the overnight-loop discipline (agent liveness, host-capacity cap, salvage, shared-checkout safety), and the load-bearing engine invariants.
The Worldos Dev Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 176,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/worldos-dev curl -L https://claudskills.com/skills/worldos-dev/SKILL.md \ -o ~/.claude/skills/worldos-dev/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/worldos-dev/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/worldos-dev/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\worldos-dev\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
SKILL.md from the source repository to ~/.claude/skills/worldos-dev/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Worldos Dev is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{worldos-dev-2026,
author = {electricsheephq},
title = {Worldos Dev [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/worldos-dev/}
}Grade A · scanned 2026-08-04 — free static scan against the OWASP Agentic Skills Top 10.
The scan flagged 1 of 10 categories (network), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.
Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.