addon-scaffolding SKILL.md skillB

addon-scaffolding 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/addon-scaffolding@git:20261012.96b6076

Pins git:20261012.96b6076 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/addon-scaffolding/SKILL.md
Versions recorded
10
Latest version
git:20261012.96b6076, committed Oct 12, 2026
First version recorded
Apr 26, 2026
Size
10,241 bytes
Repository stars
17
License
a license file GitHub does not identify

Scaffold a Blender add-on as an Extensions Platform package: blender_manifest.toml, modular file layout, register_classes_factory, symmetric register/unregister. Use when the user starts a new add-on or extension, writes or fixes blender_manifest.toml, asks which layout or registration pattern to use on Blender 4.5 LTS or 5.x, or has classes that fail to register or unregister cleanly. Targets 5.2 LTS with 4.5 LTS fallback.

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

# Addon Scaffolding (Extensions Platform)

## Trigger

Use this skill when the user:

- Wants to start a new Blender add-on
- Mentions `bl_info`, `blender_manifest.toml`, "extension", "register_classes_factory"
- Is migrating an existing add-on from the legacy `bl_info` format to the Extensions Platform
- Is unsure which file layout or registration pattern to use for Blender 4.5+ or 5.x

## Required inputs

- **Add-on name and short id** (snake_case for the manifest `id`, human-readable `name`)
- **Target Blender versions** (defaults to `blender_version_min = "4.5.0"` so the add-on works on 4.5 LTS, 5.1 and 5.2 LTS)
- **Maintainer string** (`Name <email@example.com>` form)
- **License SPDX identifier** (`SPDX:MIT`, `SPDX:GPL-2.0-or-later`, etc.)

## The Extensions Platform format (5.x default)

Since 4.2 and required in 5.x for new submissions to the official extensions site, add-ons ship as Extensions. An Extension is a directory containing a `blender_manifest.toml` plus Python modules.

### `blender_manifest.toml` required fields

```toml
schema_version = "1.0.0"

id = "my_addon"
version = "0.1.0"
name = "My Add-on"
tagline = "Short description, max 64 chars, no trailing period"
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tmhsdigital/blender-developer-tools/addon-scaffolding@sha256:15c9b2174f367b54

The line at the top of this page pins the label git:20261012.96b6076, 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_atsu7j74riv37woa.svg)](https://markdownregistry.com/a/art_atsu7j74riv37woa)

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

Versions

The registry has recorded 10 versions of this file, between Apr 26, 2026 and Oct 12, 2026, about one every 19 days. Its first recorded version is graded A and its latest B.

versioncommittedcommitsizeaudit
git:20261012.96b6076 latest2026-10-12 96b6076 10,241 BB view · diff
git:20261005.f80411b2026-10-05 f80411b 9,485 BA view · diff
git:20261005.5e0299c2026-10-05 5e0299c 9,199 BA view · diff
git:20261005.040e9942026-10-05 040e994 8,972 BA view · diff
git:20261004.cf881a72026-10-04 cf881a7 8,842 BA view · diff
git:20261004.0583b452026-10-04 0583b45 8,764 BA view · diff
git:20260909.e5b16422026-09-09 e5b1642 8,140 BA view · diff
git:20260613.e6324e52026-06-13 e6324e5 8,136 BA view · diff
git:20260426.5a05f162026-04-26 5a05f16 8,135 BA view · diff
git:20260426.c4415262026-04-26 c441526 8,135 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 (10241 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_atsu7j74riv37woa
GET https://markdownregistry.com/api/v1/resolve?ref=tmhsdigital/blender-developer-tools/addon-scaffolding
GET https://markdownregistry.com/api/v1/blob/15c9b2174f367b542d1e308cc517a3314841e647cefef38ddb0e10aec5935ad2

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.

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