operators SKILL.md skillB

operators 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/operators@git:20261007.4aeb805

Pins git:20261007.4aeb805 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/operators/SKILL.md
Versions recorded
12
Latest version
git:20261007.4aeb805, committed Oct 7, 2026
First version recorded
Apr 26, 2026
Size
11,858 bytes
Repository stars
17
License
a license file GitHub does not identify

Author bpy.types.Operator classes: bl_idname naming, poll / invoke / execute / modal lifecycle, bl_options (REGISTER, UNDO, INTERNAL, BLOCKING), operator properties and defensive context handling. Use when the user creates an operator for a button, menu, keymap or script, asks why its properties are missing from the Adjust Last Operation (redo) panel or why Ctrl-Z ignores it, or gets poll failures or None context objects. Targets 5.2 LTS with 4.5 LTS compatibility.

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

# Operators

## Trigger

Use this skill when the user:

- Wants to create a new `bpy.types.Operator`
- Mentions `bl_idname`, `bl_label`, `bl_options`, "redo panel", "F6 panel", "operator props"
- Needs an action triggered from a button, menu, keymap, or chat command
- Asks why their operator's properties don't show up in the redo panel

## Required inputs

- **Action category**: the prefix of `bl_idname` (`mesh`, `object`, `scene`, `view3d`, etc.)
- **Operator name**: the suffix (`my_addon_action`)
- **Class name**: the conventional `CATEGORY_OT_name` (`MESH_OT_my_addon_action`)
- **Whether the action is undoable** (most are)

## Anatomy of a Blender operator

```python
import bpy

class MESH_OT_offset_along_normals(bpy.types.Operator):
    bl_idname = "mesh.offset_along_normals"
    bl_label = "Offset Along Normals"
    bl_description = "Move every vertex of the active mesh a fixed distance along its normal"
    bl_options = {'REGISTER', 'UNDO'}

    distance: bpy.props.FloatProperty(
        name="Distance",
        description="How far to move each vertex",
        default=0.5,
        min=-100.0,
        max=100.0,
        unit='LENGTH',
    )

    @classmethod
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add tmhsdigital/blender-developer-tools/operators@sha256:77af3800a846d749

The line at the top of this page pins the label git:20261007.4aeb805, 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_pkavpjg2ikpu54yf.svg)](https://markdownregistry.com/a/art_pkavpjg2ikpu54yf)

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

Versions

The registry has recorded 12 versions of this file, between Apr 26, 2026 and Oct 7, 2026, about one every 15 days. Its first recorded version is graded A and its latest B.

versioncommittedcommitsizeaudit
git:20261007.4aeb805 latest2026-10-07 4aeb805 11,858 BB view · diff
git:20261007.4636c252026-10-07 4636c25 11,849 BB view · diff
git:20261005.c9064382026-10-05 c906438 10,687 BB view · diff
git:20261005.f80411b2026-10-05 f80411b 10,454 BB view · diff
git:20261005.5e0299c2026-10-05 5e0299c 9,530 BA view · diff
git:20261005.040e9942026-10-05 040e994 9,275 BA view · diff
git:20261004.bce71a92026-10-04 bce71a9 9,168 BA view · diff
git:20260909.e5b16422026-09-09 e5b1642 8,843 BA view · diff
git:20260613.e6324e52026-06-13 e6324e5 8,839 BA view · diff
git:20260613.c801f772026-06-13 c801f77 8,838 BA view · diff
git:20260426.5a05f162026-04-26 5a05f16 8,620 BA view · diff
git:20260426.c4415262026-04-26 c441526 8,620 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 (11858 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_pkavpjg2ikpu54yf
GET https://markdownregistry.com/api/v1/resolve?ref=tmhsdigital/blender-developer-tools/operators
GET https://markdownregistry.com/api/v1/blob/77af3800a846d749a8a912ec8ddedab02e1e5deef679f9079fbcc1ab15ecd767

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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