marx-practice

marx-practice is a command for Claude Code from Xiaoyun-0922/openmarx. It costs 20 tokens per session (346 once invoked), scanned A, a copy of marx-history, MIT.

A practice-design command for turning project analysis into experiments, adoption tests, pilots, and small validation steps. It asks for an intervention, an observable measure, and a success or failure rule.

In plain words
What is it for?
Use it to design an experiment for a project, test whether people will adopt a tool, run a small pilot, or define how to judge whether an intervention worked.
Why use it?
It helps replace broad recommendations with a testable action. A pilot is a limited trial used to learn whether an approach works before wider use.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the marx plugin — 1 skill, 16 commands, 3 hooks shipped together

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.

agentmods
npx agentmods add commands/xiaoyun-0922/openmarx/marx-practice
Clone the repo
git clone --depth 1 https://github.com/Xiaoyun-0922/openmarx

Made for: Claude Code.

Or install marx, the plugin that ships this one along with the rest of its 1 skill, 16 commands, 3 hooks.

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 marx-practice

README.md
[![agentmods](https://agentmods.dev/badge/commands/xiaoyun-0922/openmarx/marx-practice.svg)](https://agentmods.dev/commands/xiaoyun-0922/openmarx/marx-practice)
Your own site
<a href="https://agentmods.dev/commands/xiaoyun-0922/openmarx/marx-practice"><img src="https://agentmods.dev/badge/commands/xiaoyun-0922/openmarx/marx-practice.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 346 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 86% copy Near-identical to another mod 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 $0.00020 $0.00346
Opus 5 $0.00010 $0.00173
Sonnet 5 $0.00004 $0.00069
Haiku 4.5 $0.00002 $0.00035

Measured 6d ago against content hash 44d2fc5b99db, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

marx-practice 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 6d 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.

Origin

This is a copy

86% identical to marx-history — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

commands/marx-practice.md · 31 lines

What it actually says

Use the marx skill in practice mode.

Response language policy:

  • Match the user's language.
  • Keep required contract labels exactly: 已检查证据:, 未检查项目证据:, 实践方案, and 验证标准.
  • Provide bilingual output only when explicitly requested.

Evidence pass:

  • Inspect available project evidence first for concrete project/repository/GitHub/adoption questions.
  • Start with 已检查证据 or 未检查项目证据.
  • First visible output line must be either 已检查证据: or 未检查项目证据: before any title, table, horizontal rule, or summary. Use an ASCII colon :, not a full-width Chinese colon . Do not use variants such as 已检查项目证据:.
  • Do not start with a horizontal rule, generic title, or 证据表; the evidence line comes first.
  • Output a concrete intervention, observable metric, and success/failure rule.

Evidence freshness:

  • Mark prior-turn facts as reused evidence, not freshly inspected evidence.
  • If a concrete implementation target matters, inspect it this turn or label it as an assumption.

Required final sections:

  • Include 实践方案 and 验证标准 exactly in every project-grounded answer.
  • Do not rename these sections to "next steps", "建议", "接下来的路", or "最小下一步验证".
  • 验证标准 must contain an observable pass/fail rule or measurable metric.

User request: $ARGUMENTS

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. 6d ago First seen · 31 lines · 20 tokens per session scan A 44d2fc5b99db

Subscribe to this mod's changes

marx-practice is a command published in the GitHub repository Xiaoyun-0922/openmarx (5 stars, last pushed 4mo ago), licensed MIT. It adds 20 tokens to every session and 346 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to marx-history, differing in 6 lines, and is treated as a copy.