engine-export-presets SKILL.md skillB

engine-export-presets from tmhsdigital/blender-developer-tools is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add tmhsdigital/blender-developer-tools/engine-export-presets@git:20261007.f59ff3f

Pins git:20261007.f59ff3f in mdr.lock. Pin the fingerprint instead.

Audit grade
B, 16 of 17 checks passed
Kind
SKILL.md skill
Repository
tmhsdigital/blender-developer-tools
Path
skills/engine-export-presets/SKILL.md
Versions recorded
7
Latest version
git:20261007.f59ff3f, committed Oct 7, 2026
First version recorded
Sep 12, 2026
Size
11,868 bytes
Repository stars
17
License
a license file GitHub does not identify

Export presets for Unity, Godot and Unreal. glTF is +Y up and meters by spec, so every engine gets export_yup=True with no scale bake (Unreal converts to centimeters on import); FBX takes axis_forward/axis_up plus global_scale. Use when the user exports for a game engine, mentions export_yup, axis_forward, axis_up, global_scale, Y-up or centimeters, passes FBX axis kwargs to export_scene.gltf, or gets a model that imports lying on its back or 100x too large. Targets 5.2 LTS with 4.5 LTS…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Engine Export Presets

## Trigger

Use this skill when the user:

- Needs a Unity, Godot, or Unreal export from Blender Python
- Mentions Y-up, Z-up, centimeter scale, `export_yup`, `axis_forward`, or `axis_up`
- Is about to pass FBX axis kwargs to `bpy.ops.export_scene.gltf`
- Wants a headless preset the later `ai-asset-pipeline-template` can call

This skill is the export layer. It composes `ai-mesh-cleanup` (apply transforms, units), `depsgraph-and-evaluated-data` (`export_apply` ships evaluated mesh), and the `unapplied-scale-gltf` witness (`export_apply` does not bake object scale). It does not generate meshes.

## The core misunderstanding

glTF and FBX do not share axis RNA. `bpy.ops.export_scene.gltf` has `export_yup` (boolean, "+Y Up"). It does not have `axis_forward` or `axis_up`. `bpy.ops.export_scene.fbx` has `axis_forward` and `axis_up` (axis enums) and `global_scale`. It does not have `export_yup`. Passing the other exporter's kwargs is a TypeError or a silent no-op depending on how the call is built.

That split is the contract. Verified on current RNA:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tmhsdigital/blender-developer-tools/engine-export-presets@sha256:325b37ba62091008

The line at the top of this page pins the label git:20261007.f59ff3f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_2y4zwlh7bpnhhmx5.svg)](https://markdownregistry.com/a/art_2y4zwlh7bpnhhmx5)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 7 versions of this file, between Sep 12, 2026 and Oct 7, 2026, about one every 4 days. Its first recorded version is graded A and its latest B.

versioncommittedcommitsizeaudit
git:20261007.f59ff3f latest2026-10-07 f59ff3f 11,868 BB view · diff
git:20261005.f80411b2026-10-05 f80411b 11,044 BB view · diff
git:20261005.5e0299c2026-10-05 5e0299c 9,511 BA view · diff
git:20261005.74813ec2026-10-05 74813ec 9,264 BA view · diff
git:20261005.ae57f0d2026-10-05 ae57f0d 7,503 BA view · diff
git:20261004.cf881a72026-10-04 cf881a7 7,259 BA view · diff
git:20260912.41a82f22026-09-12 41a82f2 5,893 BA view

Audit of the latest version

B  16 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • fail: No script tag (matched: <script)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (11868 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address

Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.

Source

GitHub

tmhsdigital/blender-developer-tools · 17 stars · license a license file GitHub does not identify · pushed 2026-10-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2y4zwlh7bpnhhmx5
GET https://markdownregistry.com/api/v1/resolve?ref=tmhsdigital/blender-developer-tools/engine-export-presets
GET https://markdownregistry.com/api/v1/blob/325b37ba6209100838d4aa7525a620815dc82939c326b48432e960deff111745

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from tmhsdigital/blender-developer-tools

AGENTS.md AGENTS.md file
tmhsdigital/blender-developer-tools · AGENTS.md
git:20261012.ed48f75 · audit A · 17 stars
CLAUDE.md CLAUDE.md file
tmhsdigital/blender-developer-tools · CLAUDE.md
git:20261012.2363c1f · audit A · 17 stars
blender-rules SKILL.md skill
tmhsdigital/blender-developer-tools · claude/skills/blender-rules/SKILL.md · Blender Python anti-pattern rules (bmesh leaks, bpy.ops in loops, deprecated context-copy overrides, bulk mesh writes…
git:20261012.5a56f5e · audit A · 17 stars
AGENTS.md@exports AGENTS.md file
tmhsdigital/blender-developer-tools · exports/AGENTS.md
git:20261012.0663419 · audit A · 17 stars
live-blender-session SKILL.md skill
tmhsdigital/blender-developer-tools · live-session/skills/live-blender-session/SKILL.md · Work against the user's running Blender through the Blender Lab MCP server (the blender tools): read the scene with the…
git:20261012.98b5a40 · audit A · 17 stars
addon-scaffolding SKILL.md skill
tmhsdigital/blender-developer-tools · skills/addon-scaffolding/SKILL.md · Scaffold a Blender add-on as an Extensions Platform package: blender_manifest.toml, modular file layout…
git:20261012.96b6076 · audit B · 17 stars
ai-mesh-cleanup SKILL.md skill
tmhsdigital/blender-developer-tools · skills/ai-mesh-cleanup/SKILL.md · Ordered cleanup for an imported generated or scanned mesh before it goes to an engine: scene units, apply rotation and…
git:20261007.f59ff3f · audit B · 17 stars
bake-high-to-low SKILL.md skill
tmhsdigital/blender-developer-tools · skills/bake-high-to-low/SKILL.md · Cage-bake high-poly surface detail onto a low-poly target as a tangent-space normal map with bpy.ops.object.bake…
git:20261007.4636c25 · audit B · 17 stars
bl-info-migration SKILL.md skill
tmhsdigital/blender-developer-tools · skills/bl-info-migration/SKILL.md · Migrate a legacy bl_info add-on to the Extensions Platform in three steps, with a before/after diff and the dual-format…
git:20261012.96b6076 · audit B · 17 stars
custom-properties SKILL.md skill
tmhsdigital/blender-developer-tools · skills/custom-properties/SKILL.md · Define and bind custom properties with bpy.props annotations, PropertyGroup and PointerProperty, and choose where to…
git:20261012.96b6076 · audit B · 17 stars
depsgraph-and-evaluated-data SKILL.md skill
tmhsdigital/blender-developer-tools · skills/depsgraph-and-evaluated-data/SKILL.md · Read the evaluated geometry the user actually sees through the dependency graph instead of raw obj.data…
git:20261007.4636c25 · audit B · 17 stars
drivers-and-app-handlers SKILL.md skill
tmhsdigital/blender-developer-tools · skills/drivers-and-app-handlers/SKILL.md · Drive properties from expressions with the Driver API (driver_add, driver_namespace for custom Python functions) and…
git:20261007.4636c25 · audit B · 17 stars

Every file in tmhsdigital/blender-developer-tools

Browse by kind, by grade B, or by owner.