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Agent skill

Openrig Cmux

by mvschwarz in mvschwarz/openrig

A skill your agent uses when opening OpenRig fleet terminals into cmux — turning a rig, pod, mission, slice, or saved view into live agent tiles via rig terminal --provider cmux, or driving cmux on…

Apache-2.0Auto-check passedAgent Workflows

Install Openrig Cmux

skills CLI
$ npx skills add mvschwarz/openrig --skill openrig-cmux -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install mvschwarz/openrig openrig-cmux --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/mvschwarz/openrig.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/_canonical/core/openrig-cmux .claude/skills/openrig-cmux && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
openrig-cmux
GitHub stars
6.2k
Token cost
~1.2k tokens
SKILL.md length
518 words
Files
1
Skills in repo
49
Repo updated
First seen
Licence
Apache-2.0

At a glance

A skill your agent uses when opening OpenRig fleet terminals into cmux — turning a rig, pod, mission, slice, or saved view into live agent tiles via rig terminal --provider cmux, or driving cmux on…

  • Opening OpenRig fleet terminals into cmux — turning a rig
  • SKILL.md covers Provider status — cmux is…, The surface (same three verbs,…, What carries over unchanged… and cmux-specific notes, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Saved view into live agent tiles via rig terminal --provider cmux

What it does

Openrig Cmux is an agent skill from mvschwarz/openrig. Use when opening OpenRig fleet terminals into cmux — turning a rig, pod, mission, slice, or saved view into live agent tiles via rig terminal --provider cmux, or driving cmux on an agent's request. Same OpenRig view semantics as openrig-herdr (the verbs, honest-partial/degrade, read-only cross-rig, scroll/copy, same-size-only duplicates); cmux is the best-effort provider (herdr is the default and the proof-gated one). Prefer openrig-herdr unless cmux is specifically wanted.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows. The repository describes itself as: Build your own network of agents from Claude Code, Codex and Pi: persistent teams with roles, shared context and owned work. The licence is Apache-2.0.

When your agent uses it

  • Opening OpenRig fleet terminals into cmux — turning a rig
  • Saved view into live agent tiles via rig terminal --provider cmux
  • Driving cmux on an agents request

Example prompts

  • “/openrig-cmux”

What it can do on your machine

Read from SKILL.md and the folder at commit a29dfbc. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Openrig Cmux loads about 1.2k tokens when it runs. Until then it costs about 124 tokens; SKILL.md has 518 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~124
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from mvschwarz/openrig at commit a29dfbc, republished under its Apache-2.0 licence (© mvschwarz). 518 words, ~1,187 tokens.

Download SKILL.mdSave it as .claude/skills/openrig-cmux/SKILL.md (or your agent's skills folder).
name
openrig-cmux
description
Use when opening OpenRig fleet terminals into cmux — turning a rig, pod, mission, slice, or saved view into live agent tiles via `rig terminal --provider cmux`, or driving cmux on an agent's request. Same OpenRig view semantics as openrig-herdr (the verbs, honest-partial/degrade, read-only cross-rig, scroll/copy, same-size-only duplicates); cmux is the **best-effort** provider (herdr is the default and the proof-gated one). Prefer openrig-herdr unless cmux is specifically wanted.

openrig-cmux

cmux is a provider for OpenRig views — the same rig terminal surface as herdr, rendering the tiles into cmux instead. It is the provider OpenRig already shipped (the existing "Launch in cmux" affordance generalizes onto rig terminal <provider>), kept working. The OpenRig-semantic half is identical to openrig-herdr: OpenRig decides which agents form a view; the provider renders the pixels. Read openrig-herdr first for the full model — this skill only calls out what differs for cmux.

Provider status — cmux is best-effort

  • herdr is the default and the proof-gated provider; cmux is best-effort — it ships on the same rig terminal <provider> + web-launcher neighborhood, but a cmux miss is not a slice failure. Reach for cmux when it is specifically wanted; otherwise default to herdr (rig terminal open <view> with no --provider).
  • Views are provider-agnostic: the same view + the same agents + the same semantics carry across herdr and cmux. A saved view opens in either.

The surface (same three verbs, --provider cmux)

bash
rig terminal open <view> --provider cmux [--json]   # open a view into cmux (herdr is the no-flag default)
rig terminal views [--json]                          # the same view library, provider-agnostic
rig terminal status --provider cmux [--json]         # cmux liveness / health

<view> resolves exactly as with herdr: a rig name · pod:<rig>/<podNamespace> · mission:<id> · slice:<id> (derived live) · a saved-view name.

What carries over unchanged from openrig-herdr

All of these behave identically — see openrig-herdr for the detail:

  • Honest-partial / honest-degrade — opened / absent / degraded, each named; partial opens exit 0, zero-pane exits non-zero; an http-registered host's agents degrade with the reason ("host <id> is http-registered; tiles need ssh"), never silently dropped.
  • Read-only policy — a rig or pod: view is interactive; mission: / slice: views are read-only by construction; a saved view is per-member (readOnly). A read-only pane is tmux attach -r (client readonly=1, keystrokes physically cannot reach the agent). See openrig-herdr.
  • Safety rails (the fleet-safety rail) — a tile is a view (nested tmux attach) of a daemon-owned session; never move/join/kill/re-parent a daemon-owned pane; closing a tile detaches one client and leaves the session untouched; never live-flip tmux options on a running seat in production (prove it in an isolated environment first).
  • Scroll + copy out of the box — the daemon's terminal defaults (per-session scroll at launch + the server's clipboard defaults); running seats pick up wheel-scroll at their next relaunch.
  • Limits — tile chrome v1 = a plain label; same-size panes for duplicate/multi-view membership (the different-size resize mismatch is an inherent tmux multi-client limit, documented not fixed).
Show full SKILL.md (152 more words)Show less

cmux-specific notes

  • Open-or-focus per agent — cmux's shipped integration opens a node or focuses it if already open; expect focus (not a duplicate) when a seat is already tiled in cmux.
  • The shipped "Launch in cmux" affordance is preserved (byte-compatible) and generalizes into the provider + view picker; opening cmux from the web launcher still works.
  • No AGPL arm's-length concern — unlike herdr, cmux is OpenRig's shipped provider integration; the clean-room/never-embed rail that applies to herdr is not a cmux constraint. (This skill itself is still authored clean-room.)

Saved views — provider-agnostic

Saved views are hand-authored in terminal-views.yaml (v1 has no save/write verb) and are provider-agnostic — see openrig-herdr for the exact schema, the store facts (atomic tmp+rename, byte-stable, at the OpenRig home root), and the derived-views-never-persisted rule. Reopen any saved view in cmux with rig terminal open <id> --provider cmux. Derived views (a rig, pod:<rig>/<pod>, mission:<id>, slice:<id>) are computed live and never written to the file.

© mvschwarz, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/_canonical/core/openrig-cmux of mvschwarz/openrig.

Open the folder on GitHubat commit a29dfbc

Compare with similar skills

Openrig Cmux next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Openrig Cmux compared with similar skills
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Openrig Cmux this skillmvschwarz/openrig6.2k—~1.2kAutomated safety check: PassApache-2.0
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Hook Development for Claude Code Pluginsanthropics/claude-plugins-official38k10 repos~4.1kAutomated safety check: NotesApache-2.0
Using Superpowersfarm-fe/farm5.6k35 repos~1.4kAutomated safety check: PassMIT
Executing Plans Inlineobra/superpowers297k2 repos~5.1kAutomated safety check: PassMIT
Skill CreatorAzure/azqr79589 repos~8.2kAutomated safety check: PassApache-2.0

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Categories

Questions about Openrig Cmux

What does Openrig Cmux do?

A skill your agent uses when opening OpenRig fleet terminals into cmux — turning a rig, pod, mission, slice, or saved view into live agent tiles via rig terminal --provider cmux, or driving cmux on…. Openrig Cmux is an agent skill from mvschwarz/openrig. Use when opening OpenRig fleet terminals into cmux — turning a rig, pod, mission, slice, or saved view into live agent tiles via rig terminal --provider cmux, or driving cmux on an agent's request.

When should I use Openrig Cmux?

Openrig Cmux fits situations like: opening OpenRig fleet terminals into cmux — turning a rig; saved view into live agent tiles via rig terminal --provider cmux; driving cmux on an agents request.

How do I install Openrig Cmux in Claude Code?

Run `npx skills add mvschwarz/openrig --skill openrig-cmux -a claude-code`. Or copy the skill folder (skills/_canonical/core/openrig-cmux in mvschwarz/openrig) into .claude/skills/openrig-cmux in your project. Claude Code loads it when a task matches its description.

How do I install Openrig Cmux in Codex?

Run `npx skills add mvschwarz/openrig --skill openrig-cmux -a codex`. Or copy the skill folder (skills/_canonical/core/openrig-cmux in mvschwarz/openrig) into .agents/skills/openrig-cmux in your project. Codex loads it when a task matches its description.

Can I use Openrig Cmux in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mvschwarz/openrig --skill openrig-cmux -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/openrig-cmux, .gemini/skills/openrig-cmux, .github/skills/openrig-cmux and .opencode/skills/openrig-cmux in your project.

What does Openrig Cmux need to run?

SKILL.md names no scripts, command-line tools or credentials: Openrig Cmux is instructions for the agent only.

Does Openrig Cmux access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Openrig Cmux safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Openrig Cmux use?

Openrig Cmux is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Openrig Cmux use?

About 1.2k tokens (SKILL.md is roughly 4.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Openrig Cmux?

Skills that share tags, products or a category with Openrig Cmux: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 38k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 297k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Openrig Cmux?

mvschwarz (a GitHub user) maintains it in mvschwarz/openrig, which has 6,242 GitHub stars. The repository holds 49 skills in this directory. The repository was last updated on October 9, 2026.

Source: mvschwarz/openrig on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.