ac-workflow-mux-ospec

ac-workflow-mux-ospec is a skill for Claude Code from WaterplanAI/agentic-config. It costs 32 tokens per session (1,422 once invoked), scanned A, original, MIT.

A workflow skill for running explicit specification stages through pimux, a tool for coordinating staged work between processes or agents. It preserves the rules of the mux-ospec workflow.

In plain words
What is it for?
Use it for tasks that explicitly require mux-ospec stages and pimux-based coordination.
Why use it?
It prevents stages from being run out of order or with the wrong tools when following a formal specification.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions subagents; names the AskUserQuestion tool.

Part of the agentic-config plugin — 49 skills, 1 plugin shipped together

Good fit Use it for tasks that explicitly require mux-ospec stages and pimux-based coordination.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/waterplanai/agentic-config/ac-workflow-mux-ospec
Install

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.

Any agent
npx skills add WaterplanAI/agentic-config --skill ac-workflow-mux-ospec
Clone the repo
git clone --depth 1 https://github.com/WaterplanAI/agentic-config

Made for: Claude Code.

Or install agentic-config, the plugin that ships this one along with the rest of its 49 skills, 1 plugin.

Wrote 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.

agentmods badge for ac-workflow-mux-ospec

README.md
[![agentmods](https://agentmods.dev/badge/skills/waterplanai/agentic-config/ac-workflow-mux-ospec/github.svg)](https://agentmods.dev/skills/waterplanai/agentic-config/ac-workflow-mux-ospec)
Your own site
<a href="https://agentmods.dev/skills/waterplanai/agentic-config/ac-workflow-mux-ospec"><img src="https://agentmods.dev/badge/skills/waterplanai/agentic-config/ac-workflow-mux-ospec/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.

agentmods 80×15 button for ac-workflow-mux-ospec

Your own site · 80×15
<a href="https://agentmods.dev/skills/waterplanai/agentic-config/ac-workflow-mux-ospec"><img src="https://agentmods.dev/badge/skills/waterplanai/agentic-config/ac-workflow-mux-ospec.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,422 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00032 $0.01422
Opus 5 $0.00016 $0.00711
Sonnet 5 $0.00006 $0.00284
Haiku 4.5 $0.00003 $0.00142

Measured 10d ago against content hash c2317d4b89e7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

ac-workflow-mux-ospec 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 10d 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.

packages/pi-ac-workflow/skills/ac-workflow-mux-ospec/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MUX Spec Orchestrator - pi adaptation (pimux runtime)

Use this skill to execute explicit spec stages through pimux while preserving mux-ospec semantics.

Binding activation

If the user explicitly invokes mux-ospec / ac-workflow-mux-ospec, or embeds this skill text as the runtime for the task, treat this document as a binding runtime contract, not as optional guidance, commentary, or a planning reference.

Absolute compliance rule

For explicit mux-ospec requests in pi, the current session is a pimux-only cross-stage orchestrator.

  • FIRST after spawn: do not poll pimux or use Bash sleep/wait loops; wait for delivered child bridge activity.
  • The authoritative pimux extension applies a fail-closed parent control-plane lock for explicit mux-ospec execution.
  • Before the first child exists, the parent must not call Read, Bash, Edit, Write, NotebookEdit, Grep, Glob, web_search, subagent, or any other non-pimux tool for substantive repo work.
  • Do not execute substantive stage work directly in the parent.
  • Do not read, grep, or inspect repo files in the parent to figure out implementation details.
  • The first real move is to spawn the authoritative stage-owning pimux child.
  • The first observable parent tool call must be pimux spawn.
  • If the parent does substantive inspection before spawn, stop, acknowledge protocol violation, discard parent-side conclusions, and restart from pimux spawn.

Parent tool surface

While this skill is active, the parent is runtime-locked to pimux, AskUserQuestion, and say only:

  • before first child: pimux spawn only
  • AskUserQuestion is allowed only when the user has not provided an explicit spec path or inline prompt, or when a later required user gate is reached
  • after spawn: notify-first, not poll-first; wait for delivered child bridge activity instead of inspecting live state
  • do not poll pimux or use Bash sleep/wait loops; if you are about to inspect routine progress, stop and wait for delivered child activity instead
  • happy path after spawn forbids status, capture, tree, list, and open; those are recovery-only tools for explicit live inspection, suspected stall/protocol violation/failure, or the inactivity watchdog
  • after a child progress report arrives, use at most one send_message when the child needs input; then wait for closeout or another child report
  • say is allowed only for short user-attention prompts

Read the full file on GitHub · 107 lines

Changes

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.

  1. 10d ago First seen · 107 lines · 32 tokens per session scan A c2317d4b89e7

Subscribe to this mod's changes

ac-workflow-mux-ospec is a skill published in the GitHub repository WaterplanAI/agentic-config (30 stars, last pushed 1mo ago), licensed MIT. It adds 32 tokens to every session and 1,422 once invoked, about $0.0002 per session on Opus 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.