A guide to creating, reading, editing, and formatting Microsoft Word files such as .docx and .dotx documents. It covers document generation, existing-file edits, text conversion, page layout, headings, tables, and templates.

Use it to create reports, edit Word documents, work with templates, add structured content and tables, and convert documents for reading or processing.

It explains the different methods needed for new documents versus existing ones, reducing formatting problems in Word files.

docx — Skill for Claude Code and Codex by synthetic-sciences

About the project

synthetic-sciences/openscience is an AI workbench that carries out scientific research by reading papers, forming hypotheses, writing and running code, conducting experiments, analyzing results, and preparing reports. Researchers use it for work in machine learning, biology, physics, and chemistry with remote or local models. Catalogue add-ons extend its scientific workflows through skills and instructions.

synthetic-sciences/openscience · 4,025 stars · on GitHub · openscience.sh

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/synthetic-sciences/openscience

agentmods

npx agentmods add skills/synthetic-sciences/openscience/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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/synthetic-sciences/openscience/docx/github.svg)](https://agentmods.dev/skills/synthetic-sciences/openscience/docx)

Your own site

<a href="https://agentmods.dev/skills/synthetic-sciences/openscience/docx"><img src="https://agentmods.dev/badge/skills/synthetic-sciences/openscience/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/synthetic-sciences/openscience/docx"><img src="https://agentmods.dev/badge/skills/synthetic-sciences/openscience/docx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 184 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,930 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 89% 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.

Model	Per session	Once invoked
Fable 5.1	$0.00184	$0.01930
Opus 5.5	$0.00074	$0.00772
Sonnet 5.5	$0.00037	$0.00386
Haiku 4.5	$0.00018	$0.00193

Measured 1mo ago against content hash 4668727c70fc, 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 1mo 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

This is a copy

89% identical to docx — 22 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.

backend/cli/skills/document-parsing/docx/SKILL.md · 108 lines

How it starts

The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DOCX creation, editing, and analysis

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.

Verify the output

After writing a .docx, render it and look at it:

python scripts/office/soffice.py --headless --convert-to pdf output.docx
pdftoppm -jpeg -r 100 output.pdf page
ls page-*.jpg   # then Read the images

Read the full file on GitHub · 108 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.

1mo ago Changed · +6 lines 4668727c70fc
1mo ago First seen · 102 lines · 184 tokens per session scan A 4b15a235a9e5

Subscribe to this mod's changes

docx is a skill published in the GitHub repository synthetic-sciences/openscience (4,025 stars, last pushed today), licensed Apache-2.0. It adds 184 tokens to every session and 1,930 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 89% identical to docx, differing in 22 lines, and is treated as a copy.

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docx