docx

docx is a skill for Claude Code, Codex from asgeirtj/system_prompts_leaks. It costs 211 tokens per session (1,933 once invoked), scanned A, original, CC0-1.0.

A toolset for creating, reading, and editing Word documents and templates in .docx or .dotx format. These are Microsoft Word file formats that can contain formatted text, tables, and page layouts.

In plain words
What is it for?
Creating professional Word documents, reading their contents, editing existing files, and producing layouts with features such as tables of contents or page numbers.
Why use it?
It provides task-specific methods for working with Word files instead of treating them as plain text. It also accounts for the internal file structure used when editing existing documents.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is (cd unpacked && rm -f ../out.docx && zip -Xr ../out.docx .).

Good fit Creating professional Word documents, reading their contents, editing existing files, and producing layouts with features such as tables of contents or page numbers.

Compare 6 skills from other repositories ↓
About the project

System Prompts Leaks is a collection of captured system instructions used to guide AI chatbots and coding agents before they receive user messages. It serves researchers and developers studying how different AI assistants are directed.

asgeirtj/system_prompts_leaks · 69,759 stars · on GitHub

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaks
agentmods
npx agentmods add skills/asgeirtj/system_prompts_leaks/docx

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 docx

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/asgeirtj/system_prompts_leaks/docx"><img src="https://agentmods.dev/badge/skills/asgeirtj/system_prompts_leaks/docx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 211 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,933 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 $0.00211 $0.01933
Opus 5.5 $0.00084 $0.00773
Sonnet 5.5 $0.00042 $0.00387
Haiku 4.5 $0.00021 $0.00193

Measured 8d ago against content hash 620b86152193, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

docx 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 8d ago.

The scan reads SKILL.md. This mod also ships 15 executable files (scripts/__init__.py, scripts/accept_changes.py, scripts/comment.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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

Copies of this mod

8 near-identical copies found in the catalogue:

  • docx — 92% identical, 2 lines differ
  • docx — 92% identical, 6 lines differ
  • docx — 92% identical, 6 lines differ
  • docx — 92% identical, 6 lines differ
  • docx — 92% identical, 6 lines differ
  • docx — 92% identical, 2 lines differ
  • docx — 92% identical, 6 lines differ
  • docx — 92% identical, 6 lines differ
Anthropic/claude-code/skills/docx/SKILL.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DOCX creation, editing, and analysis

If you are about to make a new document and this session offers Claude's own docs (a Docs connector, docs skill or Docs artifact type), and the user has neither named Word/.docx/.dotx, asked for tracked changes, nor supplied a .docx/.dotx file to change or use as a template, make the document there instead. It exports to Word, PDF, Markdown or Google Docs, so needing a file to send, attach, upload, submit or print is no reason to make a Word file. A .docx/.dotx given only as source material does not count as supplied. This skill remains the right tool for producing, reading, editing, templating or converting Word files.

A .docx is a ZIP archive of XML files. Choose your approach by task:

Task Approach
Create a new document Write a docx (npm) script — see gotchas below
Edit an existing document unzip → edit word/document.xml → zip (docx-js cannot open existing files)
Read content pandoc -t markdown file.docx

Script paths below are relative to this skill's directory.

Creating with docx-js — gotchas

docx is preinstalled — do not run npm install first; write the script and require('docx') directly. Only if that require fails: npm install docx. The model knows the API; these are the footguns:

  • Page size defaults to A4. For US Letter set page: { size: { width: 12240, height: 15840 } } (DXA; 1440 = 1").
  • Landscape: pass portrait dimensions and orientation: PageOrientation.LANDSCAPE — docx-js swaps width/height internally.
  • Tables need dual widths: set columnWidths on the table AND width on every cell, both in WidthType.DXA (PERCENTAGE breaks in Google Docs). Column widths must sum to the table width.
  • Table shading: use ShadingType.CLEAR, never SOLID (renders black).
  • Lists: never insert • literally; use a numbering config with LevelFormat.BULLET.
  • ImageRun requires type: ("png", "jpg", …).
  • PageBreak must be inside a Paragraph.
  • Never use \n — use separate Paragraph elements.
  • TOC: headings must use built-in HeadingLevel.*; custom heading styles need outlineLevel set or they won't appear.
  • Don't use a table as a horizontal rule — use a paragraph bottom border instead.
  • Dot-leader / right-aligned-on-same-line: use PositionalTab (alignment: PositionalTabAlignment.RIGHT, leader: PositionalTabLeader.DOT) inside a TextRun, not literal . or space padding.

Read the full file on GitHub · 94 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago Changed · +2 lines 620b86152193
  2. 19d ago Changed · -14 tokens per session 4eb1429e75a5
  3. 24d ago First seen · 92 lines · 225 tokens per session scan A 62a566a86aea

Subscribe to this mod's changes

docx is a skill published in the GitHub repository asgeirtj/system_prompts_leaks (69,759 stars, last pushed today), licensed CC0-1.0. It adds 211 tokens to every session and 1,933 once invoked, about $0.0008 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 2026-09-23.