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Guide for using the meshconvert command-line tool to convert Wavefront OBJ files to DirectX runtime formats (CMO, SDKMESH, VBO).
OfficialMITAuto-check passed
Install Mesh Converter
$ npx skills add microsoft/DirectXMesh --skill mesh-converter -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install microsoft/DirectXMesh mesh-converter --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/mesh-converter .claude/skills/mesh-converter && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "mesh-converter" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/mesh-converter into .claude/skills/mesh-converter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mesh-converter", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/microsoft/DirectXMesh/tree/main/skills/mesh-converterType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add microsoft/DirectXMesh --skill mesh-converter -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install microsoft/DirectXMesh mesh-converter --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/mesh-converter .agents/skills/mesh-converter && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "mesh-converter" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/mesh-converter into .agents/skills/mesh-converter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mesh-converter", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add microsoft/DirectXMesh --skill mesh-converter -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install microsoft/DirectXMesh mesh-converter --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/mesh-converter .cursor/skills/mesh-converter && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "mesh-converter" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/mesh-converter into .cursor/skills/mesh-converter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mesh-converter", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/microsoft/DirectXMesh.git --path skills/mesh-converter--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add microsoft/DirectXMesh --skill mesh-converter -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install microsoft/DirectXMesh mesh-converter --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/mesh-converter .gemini/skills/mesh-converter && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "mesh-converter" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/mesh-converter into .gemini/skills/mesh-converter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mesh-converter", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install microsoft/DirectXMesh mesh-converterInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add microsoft/DirectXMesh --skill mesh-converter -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/mesh-converter .github/skills/mesh-converter && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "mesh-converter" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/mesh-converter into .github/skills/mesh-converter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mesh-converter", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add microsoft/DirectXMesh --skill mesh-converter -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install microsoft/DirectXMesh mesh-converter --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/microsoft/DirectXMesh.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/mesh-converter .opencode/skills/mesh-converter && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "mesh-converter" agent skill from https://github.com/microsoft/DirectXMesh/tree/main/skills/mesh-converter into .opencode/skills/mesh-converter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mesh-converter", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
mesh-converter- GitHub stars
- 859
- Token cost
- ~1.2k tokens
- SKILL.md length
- 484 words
- Files
- 2
- Skills in repo
- 2
- Repo updated
- First seen
- Licence
- MIT
At a glance
Guide for using the meshconvert command-line tool to convert Wavefront OBJ files to DirectX runtime formats (CMO, SDKMESH, VBO).
- SKILL.md covers When to Use, Overview, Installation and Basic Syntax, plus 5 more sections
- Calls winget
What it does
Mesh Converter is an agent skill from microsoft/DirectXMesh, published by the product's own GitHub organization. Guide for using the meshconvert command-line tool to convert Wavefront OBJ files to DirectX runtime formats (CMO, SDKMESH, VBO).
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `reference/options.md`).
It works with C++. The repository describes itself as: DirectXMesh geometry processing library. The licence is MIT.
Example prompts
- “/mesh-converter”
What it can do on your machine
Read from SKILL.md and the folder at commit 27e180b. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
winget
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
github.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Mesh Converter loads about 1.2k tokens when it runs. Until then it costs about 36 tokens; SKILL.md has 484 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from microsoft/DirectXMesh at commit 27e180b, republished under its MIT licence (© microsoft). 484 words, ~1,247 tokens.
Download SKILL.mdSave it as
.claude/skills/mesh-converter/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- mesh-converter
- description
- Guide for using the meshconvert command-line tool to convert Wavefront OBJ files to DirectX runtime formats (CMO, SDKMESH, VBO).
- license
- MIT
- metadata.author
- chuckw
- metadata.version
- 1.0
Mesh Converter Skill
This skill provides guidance for using the meshconvert command-line tool to convert Wavefront OBJ geometry files into runtime formats consumed by DirectX Tool Kit.
When to Use
Invoke this skill when:
- Converting Wavefront OBJ files to SDKMESH, CMO, or VBO format.
- Preparing mesh geometry for use with DirectX Tool Kit (DirectXTK).
- Generating normals, tangents, or performing vertex-cache optimization on mesh data.
- Understanding the available output formats and their requirements.
Overview
The meshconvert tool imports geometry from Wavefront Object (OBJ) or VBO files and prepares it for runtime use. It can generate normals and tangent frames, perform vertex-cache optimization, and write to formats suited for DirectX applications.
- Repository: https://github.com/microsoft/DirectXMesh
- Documentation: https://github.com/microsoft/DirectXMesh/wiki/Meshconvert
- Installation:
winget install Microsoft.DirectX.Mesh
Installation
winget (Recommended)
winget install Microsoft.DirectX.Meshvcpkg
vcpkg install directxmesh[tools]Basic Syntax
meshconvert [options] [--file-list <filename>] <file-name(s)>The tool uses Windows-style - or / for options, and also supports GNU long options with --.
Output Formats
| Format | Switch | Description | Requirements |
|---|---|---|---|
| SDKMESH | -ft sdkmesh | Default output format for DirectX Tool Kit Model class | None |
| SDKMESH (PBR) | -ft sdkmesh2 | SDKMESH with PBR materials | None |
| CMO | -ft cmo | Visual Studio CMO format for DirectX Tool Kit Model class | Normals, tangents, and texture coordinates |
| VBO | -ft vbo | Simple vertex buffer object format for DirectX Tool Kit | Normals and texture coordinates |
| OBJ | -ft obj | Re-export as Wavefront OBJ | None |
Common Workflows
Basic Conversion to SDKMESH (Default)
meshconvert model.objProduces model.sdkmesh with no additional processing.
Convert with Normals and Optimization
meshconvert model.obj -n -opGenerates normals (weight by angle) and performs vertex-cache optimization using the Hoppe algorithm.
Convert to CMO Format
CMO format requires normals, tangents, and texture coordinates:
meshconvert model.obj -ft cmo -n -tbConvert to VBO Format
VBO format requires normals and texture coordinates:
meshconvert model.obj -ft vbo -nConvert with Full Processing Pipeline
meshconvert model.obj -n -tb -op -yGenerates normals, tangent frames (tangents and bi-tangents), optimizes the vertex cache, and overwrites any existing output file.
Show full SKILL.md (201 more words)Show less
Convert for Direct3D Coordinate System
OBJ files from tools using OpenGL conventions may need coordinate adjustments:
meshconvert model.obj -n -op --flip-v --flip-zFlips the V texture coordinate and negates Z for right-hand to left-hand conversion.
Batch Conversion
meshconvert -r *.obj -n -op -yRecursively processes all OBJ files in the current directory and subdirectories.
Or use a file list:
meshconvert --file-list models.txt -n -op -yWhere models.txt contains one filename per line (lines starting with # are comments).
Option Reference
See reference/options.md for the complete command-line options reference.
Format-Specific Notes
SDKMESH
- Default output format.
- Supports 16-bit and 32-bit index buffers (auto-selects 16-bit when possible).
- Supports configurable vertex formats for normals, UVs, and colors.
- Used by DirectX Tool Kit's
Modelclass viaModel::CreateFromSDKMESH.
CMO
- Visual Studio's mesh format.
- Requires normals, tangents, and texture coordinates — use
-n -tbswitches. - Fixed vertex format (no
-fn,-fuv,-fc, or-ib32options). - Used by DirectX Tool Kit's
Modelclass viaModel::CreateFromCMO.
VBO
- Simple binary format with position, normal, and texture coordinates.
- Requires normals and texture coordinates — use
-nswitch. - Fixed vertex format (no
-fn,-fuv,-fc, or-ib32options). - Limited to 65535 vertices (16-bit indices only).
- Used by DirectX Tool Kit's
Modelclass viaModel::CreateFromVBO.
Key References
© microsoft, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in skills/mesh-converter of microsoft/DirectXMesh.
- SKILL.md
- reference/options.md
Open the folder on GitHubat commit 27e180b
Compare with similar skills
Mesh Converter next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Mesh Converter this skillmicrosoft/DirectXMesh | 859 | — | ~1.2k | Automated safety check: Pass | MIT | |
| Ab Test Store Listingappeeky/aso-skills | 2.2k | — | ~1.8k | Automated safety check: Pass | MIT | |
| Meta Ads ConnectLeoYeAI/openclaw-marketing-skills | 1k | 1 repos | ~2k | Automated safety check: Pass | Custom licence | |
| Apple Search Adsappeeky/aso-skills | 2.2k | — | ~1.8k | Automated safety check: Pass | MIT | |
| Custom Product Pagesappeeky/aso-skills | 2.2k | — | ~1.7k | Automated safety check: Pass | MIT | |
| Custom Product Pagesgustavscirulis/snapgrid | 117 | 1 repos | ~2.2k | Automated safety check: Pass | Custom licence |
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More from microsoft/DirectXMesh
- Official
Directxmesh Usage
microsoft/DirectXMesh
Guide for integrating the DirectXMesh geometry processing library into a C++ project.
Related
Works with
Questions about Mesh Converter
What does Mesh Converter do?
Guide for using the meshconvert command-line tool to convert Wavefront OBJ files to DirectX runtime formats (CMO, SDKMESH, VBO). Mesh Converter is an agent skill from microsoft/DirectXMesh, published by the product's own GitHub organization. Guide for using the meshconvert command-line tool to convert Wavefront OBJ files to DirectX runtime formats (CMO, SDKMESH, VBO).
How do I install Mesh Converter in Claude Code?
Run `npx skills add microsoft/DirectXMesh --skill mesh-converter -a claude-code`. Or copy the skill folder (skills/mesh-converter in microsoft/DirectXMesh) into .claude/skills/mesh-converter in your project. Claude Code loads it when a task matches its description.
How do I install Mesh Converter in Codex?
Run `npx skills add microsoft/DirectXMesh --skill mesh-converter -a codex`. Or copy the skill folder (skills/mesh-converter in microsoft/DirectXMesh) into .agents/skills/mesh-converter in your project. Codex loads it when a task matches its description.
Can I use Mesh Converter in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add microsoft/DirectXMesh --skill mesh-converter -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mesh-converter, .gemini/skills/mesh-converter, .github/skills/mesh-converter and .opencode/skills/mesh-converter in your project.
What does Mesh Converter need to run?
Going by SKILL.md and its folder, Mesh Converter needs the command-line tools its instructions call (winget).
Does Mesh Converter access the network?
SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.
Is Mesh Converter safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Mesh Converter use?
Mesh Converter is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Mesh Converter use?
About 1.2k tokens (SKILL.md is roughly 5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Mesh Converter?
Skills that share tags, products or a category with Mesh Converter: Ab Test Store Listing (appeeky/aso-skills, 2.2k stars), Meta Ads Connect (LeoYeAI/openclaw-marketing-skills, 1k stars), Apple Search Ads (appeeky/aso-skills, 2.2k stars) and Custom Product Pages (appeeky/aso-skills, 2.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Mesh Converter?
microsoft (a GitHub organization, an official publisher) maintains it in microsoft/DirectXMesh, which has 859 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on October 6, 2026.
Source: microsoft/DirectXMesh on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.