
Minimax DOCX
FreeEfficiently create and format DOCX documents with OpenXML.
Free · Opens the source repo
What Minimax DOCX does
Minimax DOCX is a skill designed for professionals who need to create, edit, and format DOCX documents using the OpenXML SDK in .NET. This skill provides three main pipelines: creating new documents from scratch, filling or editing content in existing documents, and applying template formatting with XSD validation. It is particularly useful for tasks such as writing reports, drafting proposals, or modifying contracts, making it an essential tool for anyone who regularly works with Word documents.
The skill operates through a command-line interface (CLI) as well as direct C# scripting, allowing users to choose the best method for their specific needs. For simpler tasks, users can utilize CLI commands to create or edit documents quickly. For more complex requirements, such as custom styles or multi-section layouts, writing C# scripts provides greater flexibility and control. The setup process is straightforward, requiring just a single command to initialize the environment, followed by a readiness check before proceeding with document operations.
Minimax DOCX also emphasizes the importance of validation throughout the document creation and editing process. After each operation, users are encouraged to run a validation pipeline to ensure that the document adheres to the required structure and business rules. This feature helps prevent errors and ensures that the final output meets professional standards. Whether you are a developer, designer, or business professional, this skill streamlines the process of producing high-quality DOCX documents efficiently and accurately.
When to use it
Use this skill whenever you need to create, modify, or format Word documents, especially when specific styles or templates are required.
When not to use it
This skill is not suitable for simple text editing tasks that do not require formal document formatting or when working with non-DOCX file types.
What you can build with it
Creating a New Report
Use the CLI to quickly generate a new report by specifying the type and content configuration.
Editing an Existing Contract
Load an existing DOCX file and use the editing commands to update specific sections or replace text.
Applying a Corporate Template
Utilize the template application pipeline to format a document according to corporate styling guidelines.
How to install Minimax DOCX
View source1. Install with the skills CLI
npx skills add minimax-ai/skills/minimax-docx --agent claude-code2. Or install it manually
Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.
Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs
Inside SKILL.md
Written by minimax-aiminimax-docx
Create, edit, and format DOCX documents via CLI tools or direct C# scripts built on OpenXML SDK (.NET).
Setup
First time: bash scripts/setup.sh (or powershell scripts/setup.ps1 on Windows, --minimal to skip optional deps).
First operation in session: scripts/env_check.sh — do not proceed if NOT READY. (Skip on subsequent operations within the same session.)
Quick Start: Direct C# Path
When the task requires structural document manipulation (custom styles, complex tables, multi-section layouts, headers/footers, TOC, images), write C# directly instead of wrestling with CLI limitations. Use this scaffold:
// File: scripts/dotnet/task.csx (or a new .cs in a Console project)
// dotnet run --project scripts/dotnet/MiniMaxAIDocx.Cli -- run-script task.csx
#r "nuget: DocumentFormat.OpenXml, 3.2.0"
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Wordprocessing;
using var doc = WordprocessingDocument.Create("output.docx", WordprocessingDocumentType.Document);
var mainPart = doc.AddMainDocumentPart();
mainPart.Document = new Document(new Body());
// --- Your logic here ---
// Read the relevant Samples/*.cs file FIRST for tested patterns.
// See Samples/ table in References section below.
Before writing any C#, read the relevant Samples/*.cs file — they contain compilable, SDK-version-verified patterns. The Samples table in the References section below maps topics to files.
CLI shorthand
All CLI commands below use $CLI as shorthand for:
dotnet run --project scripts/dotnet/MiniMaxAIDocx.Cli --
Pipeline routing
Route by checking: does the user have an input .docx file?
User task
├─ No input file → Pipeline A: CREATE
│ signals: "write", "create", "draft", "generate", "new", "make a report/proposal/memo"
│ → Read references/scenario_a_create.md
│
└─ Has input .docx
├─ Replace/fill/modify content → Pipeline B: FILL-EDIT
│ signals: "fill in", "replace", "update", "change text", "add section", "edit"
│ → Read references/scenario_b_edit_content.md
│
└─ Reformat/apply style/template → Pipeline C: FORMAT-APPLY
signals: "reformat", "apply template", "restyle", "match this format", "套模板", "排版"
├─ Template is pure style (no content) → C-1: OVERLAY (apply styles to source)
└─ Template has structure (cover/TOC/example sections) → C-2: BASE-REPLACE
(use template as base, replace example content with user content)
→ Read references/scenario_c_apply_template.md
If the request spans multiple pipelines, run them sequentially (e.g., Create then Format-Apply).
Pre-processing
Convert .doc → .docx if needed: scripts/doc_to_docx.sh input.doc output_dir/
Preview before editing (avoids reading raw XML): scripts/docx_preview.sh document.docx
Analyze structure for editing scenarios: $CLI analyze --input document.docx
Scenario A: Create
Read references/scenario_a_create.md, references/typography_guide.md, and references/design_principles.md first. Pick an aesthetic recipe from Samples/AestheticRecipeSamples.cs that matches the document type — do not invent formatting values. For CJK, also read references/cjk_typography.md.
Choose your path:
- Simple (plain text, minimal formatting): use CLI —
$CLI create --type report --output out.docx --config content.json - Structural (custom styles, multi-section, TOC, images, complex tables): write C# directly. Read the relevant
Samples/*.csfirst.
CLI options: --type (report|letter|memo|academic), --title, --author, --page-size (letter|a4|legal|a3), --margins (standard|narrow|wide), --header, --footer, --page-numbers, --toc, --content-json.
Then run the validation pipeline (below).
Scenario B: Edit / Fill
Read references/scenario_b_edit_content.md first. Preview → analyze → edit → validate.
Choose your path:
- Simple (text replacement, placeholder fill): use CLI subcommands.
- Structural (add/reorganize sections, modify styles, manipulate tables, insert images): write C# directly. Read
references/openxml_element_order.mdand the relevantSamples/*.cs.
Available CLI edit subcommands:
replace-text --find "X" --replace "Y"fill-placeholders --data '{"key":"value"}'fill-table --data table.jsoninsert-section,remove-section,update-header-footer
$CLI edit replace-text --input in.docx --output out.docx --find "OLD" --replace "NEW"
$CLI edit fill-placeholders --input in.docx --output out.docx --data '{"name":"John"}'
Then run the validation pipeline. Also run diff to verify minimal changes:
$CLI diff --before in.docx --after out.docx
Scenario C: Apply Template
Read references/scenario_c_apply_template.md first. Preview and analyze both source and template.
$CLI apply-template --input source.docx --template template.docx --output out.docx
For complex template operations (multi-template merge, per-section headers/footers, style merging), write C# directly — see Critical Rules below for required patterns.
Run the validation pipeline, then the hard gate-check:
$CLI validate --input out.docx --gate-check assets/xsd/business-rules.xsd
Gate-check is a hard requirement. Do NOT deliver until it passes. If it fails: diagnose, fix, re-run.
Also diff to verify content preservation: $CLI diff --before source.docx --after out.docx
Validation pipeline
Run after every write operation. For Scenario C the full pipeline is mandatory; for A/B it is recommended (skip only if the operation was trivially simple).
$CLI merge-runs --input doc.docx # 1. consolidate runs
$CLI validate --input doc.docx --xsd assets/xsd/wml-subset.xsd # 2. XSD structure
$CLI validate --input doc.docx --business # 3. business rules
If XSD fails, auto-repair and retry:
$CLI fix-order --input doc.docx
$CLI validate --input doc.docx --xsd assets/xsd/wml-subset.xsd
If XSD still fails, fall back to business rules + preview:
$CLI validate --input doc.docx --business
scripts/docx_preview.sh doc.docx
# Verify: font contamination=0, table count correct, drawing count correct, sectPr count correct
Final preview: scripts/docx_preview.sh doc.docx
Critical rules
These prevent file corruption — OpenXML is strict about element ordering.
Element order (properties always first):
| Parent | Order |
|---|---|
w:p | pPr → runs |
w:r | rPr → t/br/tab |
w:tbl | tblPr → tblGrid → tr |
w:tr | trPr → tc |
w:tc | tcPr → p (min 1 <w:p/>) |
w:body | block content → sectPr (LAST child) |
Direct format contamination: When copying content from a source document, inline rPr (fonts, color) and pPr (borders, shading, spacing) override template styles. Always strip direct formatting — keep only pStyle reference and t text. Clean tables too (including pPr/rPr inside cells).
Track changes: <w:del> uses <w:delText>, never <w:t>. <w:ins> uses <w:t>, never <w:delText>.
Font size: w:sz = points × 2 (12pt → sz="24"). Margins/spacing in DXA (1 inch = 1440, 1cm ≈ 567).
Heading styles MUST have OutlineLevel: When defining heading styles (Heading1, ThesisH1, etc.), always include new OutlineLevel { Val = N } in StyleParagraphProperties (H1→0, H2→1, H3→2). Without this, Word sees them as plain styled text — TOC and navigation pane won't work.
Multi-template merge: When given multiple template files (font, heading, breaks), read references/scenario_c_apply_template.md section "Multi-Template Merge" FIRST. Key rules:
- Merge styles from all templates into one styles.xml. Structure (sections/breaks) comes from the breaks template.
- Each content paragraph must appear exactly ONCE — never duplicate when inserting section breaks.
- NEVER insert empty/blank paragraphs as padding or section separators. Output paragraph count must equal input. Use section break properties (
w:sectPrinsidew:pPr) and style spacing (w:spacingbefore/after) for visual separation. - Insert oddPage section breaks before EVERY chapter heading, not just the first. Even if a chapter has dual-column content, it MUST start with oddPage; use a second continuous break after the heading for column switching.
- Dual-column chapters need THREE section breaks: (1) oddPage in preceding para's pPr, (2) continuous+cols=2 in the chapter HEADING's pPr, (3) continuous+cols=1 in the last body para's pPr to revert.
- Copy
titlePgsettings from the breaks template for EACH section. Abstract and TOC sections typically needtitlePg=true.
Multi-section headers/footers: Templates with 10+ sections (e.g., Chinese thesis) have DIFFERENT headers/footers per section (Roman vs Arabic page numbers, different header text per zone). Rules:
- Use C-2 Base-Replace: copy the TEMPLATE as output base, then replace body content. This preserves all sections, headers, footers, and titlePg settings automatically.
- NEVER recreate headers/footers from scratch — copy template header/footer XML byte-for-byte.
- NEVER add formatting (borders, alignment, font size) not present in the template header XML.
- Non-cover sections MUST have header/footer XML files (at least empty header + page number footer).
- See
references/scenario_c_apply_template.mdsection "Multi-Section Header/Footer Transfer".
References
Load as needed — don't load all at once. Pick the most relevant files for the task.
The C# samples and design references below are the project's knowledge base ("encyclopedia"). When writing OpenXML code, ALWAYS read the relevant sample file first — it contains compilable, SDK-version-verified patterns that prevent common errors. When making aesthetic decisions, read the design principles and recipe files — they encode tested, harmonious parameter sets from authoritative sources (IEEE, ACM, APA, Nature, etc.), not guesses.
Scenario guides (read first for each pipeline)
| File | When |
|---|---|
references/scenario_a_create.md | Pipeline A: creating from scratch |
references/scenario_b_edit_content.md | Pipeline B: editing existing content |
references/scenario_c_apply_template.md | Pipeline C: applying template formatting |
C# code samples (compilable, heavily commented — read when writing code)
| File | Topic |
|---|---|
Samples/DocumentCreationSamples.cs | Document lifecycle: create, open, save, streams, doc defaults, settings, properties, page setup, multi-section |
Samples/StyleSystemSamples.cs | Styles: Normal/Heading chain, character/table/list styles, DocDefaults, latentStyles, CJK 公文, APA 7th, import, resolve inheritance |
Samples/CharacterFormattingSamples.cs | RunProperties: fonts, size, bold/italic, all underlines, color, highlight, strike, sub/super, caps, spacing, shading, border, emphasis marks |
Samples/ParagraphFormattingSamples.cs | ParagraphProperties: justification, indentation, line/paragraph spacing, keep/widow, outline level, borders, tabs, numbering, bidi, frame |
Samples/TableSamples.cs | Tables: borders, grid, cell props, margins, row height, header repeat, merge (H+V), nested, floating, three-line 三线表, zebra striping |
Samples/HeaderFooterSamples.cs | Headers/footers: page numbers, "Page X of Y", first/even/odd, logo image, table layout, 公文 "-X-", per-section |
Samples/ImageSamples.cs | Images: inline, floating, text wrapping, border, alt text, in header/table, replace, SVG fallback, dimension calc |
Samples/ListAndNumberingSamples.cs | Numbering: bullets, multi-level decimal, custom symbols, outline→headings, legal, Chinese 一/(一)/1./(1), restart/continue |
Samples/FieldAndTocSamples.cs | Fields: TOC, SimpleField vs complex field, DATE/PAGE/REF/SEQ/MERGEFIELD/IF/STYLEREF, TOC styles |
Samples/FootnoteAndCommentSamples.cs | Footnotes, endnotes, comments (4-file system), bookmarks, hyperlinks (internal + external) |
Samples/TrackChangesSamples.cs | Revisions: insertions (w:t), deletions (w:delText!), formatting changes, accept/reject all, move tracking |
Samples/AestheticRecipeSamples.cs | 13 aesthetic recipes from authoritative sources: ModernCorporate, AcademicThesis, ExecutiveBrief, ChineseGovernment (GB/T 9704), MinimalModern, IEEE Conference, ACM sigconf, APA 7th, MLA 9th, Chicago/Turabian, Springer LNCS, Nature, HBR — each with exact values from official style guides |
Note: Samples/ path is relative to scripts/dotnet/MiniMaxAIDocx.Core/.
Markdown references (read when you need specifications or design rules)
| File | When |
|---|---|
references/openxml_element_order.md | XML element ordering rules (prevents corruption) |
references/openxml_units.md | Unit conversion: DXA, EMU, half-points, eighth-points |
references/openxml_encyclopedia_part1.md | Detailed C# encyclopedia: document creation, styles, character & paragraph formatting |
references/openxml_encyclopedia_part2.md | Detailed C# encyclopedia: page setup, tables, headers/footers, sections, doc properties |
references/openxml_encyclopedia_part3.md | Detailed C# encyclopedia: TOC, footnotes, fields, track changes, comments, images, math, numbering, protection |
references/typography_guide.md | Font pairing, sizes, spacing, page layout, table design, color schemes |
references/cjk_typography.md | CJK fonts, 字号 sizes, RunFonts mapping, GB/T 9704 公文 standard |
references/cjk_university_template_guide.md | Chinese university thesis templates: numeric styleIds (1/2/3 vs Heading1), document zone structure (cover→abstract→TOC→body→references), font expectations, common mistakes |
references/design_principles.md | Aesthetic foundations: 6 design principles (white space, contrast/scale, proximity, alignment, repetition, hierarchy) — teaches WHY, not just WHAT |
references/design_good_bad_examples.md | Good vs Bad comparisons: 10 categories of typography mistakes with OpenXML values, ASCII mockups, and fixes |
references/track_changes_guide.md | Revision marks deep dive |
references/troubleshooting.md | Symptom-driven fixes: 13 common problems indexed by what you SEE (headings wrong, images missing, TOC broken, etc.) — search by symptom, find the fix |
Frequently asked questions about Minimax DOCX
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