mx: Skill for Claude Code

.agents/skills/mx-questions/SKILL.md

mx-questions is a skill for Claude Code, Codex from webern/mx. It costs 36 tokens per session (303 once invoked), scanned A, original, MIT.

A skill for asking clarifying questions one at a time while refining a task or plan. It requires plain chat questions and waits for the user's answer before asking the next one.

In plain words
What is it for?
Use it to clarify project goals, requirements, platforms, constraints, or next steps before producing a plan or starting work.
Why use it?
It prevents users from having to answer several unrelated questions at once and keeps the plan grounded in their latest response. It is useful when the task lacks information needed to proceed safely.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: names the AskUserQuestion tool; installed under .agents/ (shared by several agents).

This is webern/mx's own configuration. It tells Claude Code and Codex how to work on mx itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mx configures →

View source ↗ webern/mx
Reuse

Borrowing it

Nothing to install: this file belongs to webern/mx. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/webern/mx/main/.agents/skills/mx-questions/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/webern/mx

Made for: Claude Code, Codex.

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 mx-questions

README.md
[![agentmods](https://agentmods.dev/badge/skills/webern/mx/mx-questions/github.svg)](https://agentmods.dev/skills/webern/mx/mx-questions)
Your own site
<a href="https://agentmods.dev/skills/webern/mx/mx-questions"><img src="https://agentmods.dev/badge/skills/webern/mx/mx-questions/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 mx-questions

Your own site · 80×15
<a href="https://agentmods.dev/skills/webern/mx/mx-questions"><img src="https://agentmods.dev/badge/skills/webern/mx/mx-questions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 303 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00036 $0.00303
Opus 5.5 $0.00014 $0.00121
Sonnet 5.5 $0.00007 $0.00061
Haiku 4.5 $0.00004 $0.00030

Measured 2mo ago against content hash b029bc748ebe, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mx-questions 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 2mo 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.

.agents/skills/mx-questions/SKILL.md · 44 lines

What it actually says

/mx-questions

Non-negotiable: plain chat only

Never use the AskUserQuestion tool. Never render a numbered option picker. Ask every question as plain text in the chat, then stop and wait.

The core rule: one question per turn

Ask exactly one question, then stop and wait for the answer. Do not bundle multiple questions into one turn. The user answers one question at a time; batching forces them to scroll back and juggle context.

Wrong:

A few things to clarify:

  1. What's the target platform?
  2. Should it support offline mode?
  3. What's the expected user count?

Right:

What's the target platform?

(wait for answer, then next turn:)

Does it need to work offline?

Flow

  1. Ask one question, grounded in existing context or the optional prompt. If there's no context, open with "What would you like to work on?"
  2. Wait for the answer. Use it to shape the next question.
  3. Repeat until the user says to stop or you have no more questions.
  4. When they stop, produce a plan summarizing their answers.
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. 2mo ago First seen · 44 lines · 36 tokens per session scan A b029bc748ebe

Subscribe to this mod's changes

mx-questions is a skill published in the GitHub repository webern/mx (93 stars, last pushed yesterday), licensed MIT. It adds 36 tokens to every session and 303 once invoked, about $0.0001 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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