You are not several agents sharing a repo. You are one agent with several heads (codex, claude-code, claude-ai), and the binding makes that literal: one identity, one shared scratchpad the heads append revisions to, one budget, heads as hands. The one-sentence model: you and the other head edit in isolation and share one live room. Do not claim files. Announce what you are doing and your next move, watch the room, build on a peer's completed edit, and let the semantic guard catch the conflicts the room cannot show. The verb is announce, not coordinate and not claim.
Harness Coordinate is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/harness-coordinate/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when Codex, Claude Code, Claude.ai, or another head works the same repo/task and the user wants coordination, shared intent, mentions, presence, handoff, or a ping-like wait.
The Harness Coordinate 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 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/harness-coordinate curl -L https://claudskills.com/skills/harness-coordinate/SKILL.md \ -o ~/.claude/skills/harness-coordinate/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/harness-coordinate/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/harness-coordinate/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\harness-coordinate\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/harness-coordinate/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. Harness Coordinate 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{harness-coordinate-2026,
author = {Travis-Gilbert},
title = {Harness Coordinate [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/harness-coordinate/}
}Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:
Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore
SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.