OpenRig is a software harness that coordinates Claude Code and Codex coding agents as one system, with agent teams defined in YAML and launched together. It is for organizing persistent teams of coding agents that can delegate work to specialists and return results or decisions. The catalogue lists 53 skills and one plugin as add-ons for OpenRig.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add mvschwarz/openrig --skill openrig-cmuxgit clone --depth 1 https://github.com/mvschwarz/openrigWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mvschwarz/openrig/openrig-cmux)<a href="https://agentmods.dev/skills/mvschwarz/openrig/openrig-cmux"><img src="https://agentmods.dev/badge/skills/mvschwarz/openrig/openrig-cmux/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mvschwarz/openrig/openrig-cmux"><img src="https://agentmods.dev/badge/skills/mvschwarz/openrig/openrig-cmux.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00122 | $0.01214 |
| Opus 5.5 | $0.00049 | $0.00486 |
| Sonnet 5.5 | $0.00024 | $0.00243 |
| Haiku 4.5 | $0.00012 | $0.00121 |
Grade A, and why
openrig-cmux scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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)
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 istmux attach -r(clientreadonly=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).
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 82 lines · 122 tokens per session scan A 73a86eac45d6
openrig-cmux is a skill published in the GitHub repository mvschwarz/openrig (8,168 stars, last pushed today), licensed Apache-2.0. It adds 122 tokens to every session and 1,214 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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