mesh-editing-and-bmesh SKILL.md skillB
mesh-editing-and-bmesh from tmhsdigital/blender-developer-tools is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tmhsdigital/blender-developer-tools/mesh-editing-and-bmesh@git:20261012.f62501dPins git:20261012.f62501d 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/mesh-editing-and-bmesh/SKILL.md- Versions recorded
- 12
- Latest version
- git:20261012.f62501d, committed Oct 12, 2026
- First version recorded
- Apr 26, 2026
- Size
- 18,961 bytes
- Repository stars
- 17
- License
- a license file GitHub does not identify
Create, edit and read meshes efficiently: when to use bpy.data, bpy.ops or bmesh, the bmesh.new / try / finally / free pattern, foreach_get and foreach_set for bulk data, and evaluated meshes for modifier results. Use when the user writes mesh-generating or mesh-editing Python, mentions bmesh, from_pydata, foreach_set or mesh.vertices, has a slow script looping over bpy.ops.mesh or per-vertex assignments, or a bmesh script that misbehaves on its second run. Targets 5.2 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
# Mesh Editing and bmesh
## Trigger
Use this skill when the user:
- Wants to create, modify, or read mesh geometry from Python
- Mentions `bmesh`, `mesh.vertices`, `foreach_set`, `from_pydata`, `evaluated_get`
- Has a script that's slow and uses `bpy.ops.mesh.*` in a loop
- Needs the mesh after modifiers (subdivision surface, mirror, geometry nodes) have been applied
- Asks why their bmesh script crashes on the second run
## Three layers, three use cases
There are three ways to touch mesh data and each is right in a specific situation.
### Layer 1: `bpy.data.meshes` and direct vertex/edge/face access
For creating new meshes from scratch or reading static geometry:
```python
import bpy
mesh = bpy.data.meshes.new("MyMesh")
verts = [(0, 0, 0), (1, 0, 0), (1, 1, 0), (0, 1, 0)]
faces = [(0, 1, 2, 3)]
mesh.from_pydata(verts, [], faces)
mesh.update()
obj = bpy.data.objects.new("MyObject", mesh)
bpy.context.scene.collection.objects.link(obj)
```
Use this layer when:
- You're constructing a mesh from a list of vertices and faces.
- You're reading vertex coordinates, normals, or face indices from an existing static mesh.
- You're doing one-shot bulk operations.
…Read the whole file at its exact version.
How to install
mdr add tmhsdigital/blender-developer-tools/mesh-editing-and-bmesh@sha256:321097564a094863The line at the top of this page pins the label git:20261012.f62501d, 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.
[](https://markdownregistry.com/a/art_3ij4b3gdvmvqdgej)
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 12, 2026, about one every 15 days. Its first recorded version is graded A and its latest B.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261012.f62501d latest | 2026-10-12 | f62501d | 18,961 B | B | view · diff |
| git:20261007.dccca5d | 2026-10-07 | dccca5d | 17,033 B | B | view · diff |
| git:20261007.4636c25 | 2026-10-07 | 4636c25 | 17,033 B | B | view · diff |
| git:20261005.f80411b | 2026-10-05 | f80411b | 16,776 B | B | view · diff |
| git:20261005.5e0299c | 2026-10-05 | 5e0299c | 10,048 B | A | view · diff |
| git:20261005.040e994 | 2026-10-05 | 040e994 | 9,793 B | A | view · diff |
| git:20261004.cf881a7 | 2026-10-04 | cf881a7 | 9,327 B | A | view · diff |
| git:20260910.dd6b45e | 2026-09-10 | dd6b45e | 9,135 B | A | view · diff |
| git:20260909.e5b1642 | 2026-09-09 | e5b1642 | 8,464 B | A | view · diff |
| git:20260613.e6324e5 | 2026-06-13 | e6324e5 | 8,460 B | A | view · diff |
| git:20260426.5a05f16 | 2026-04-26 | 5a05f16 | 8,459 B | A | view · diff |
| git:20260426.c441526 | 2026-04-26 | c441526 | 8,459 B | A | view |
Audit of the latest version
- 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 (18961 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
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_3ij4b3gdvmvqdgej GET https://markdownregistry.com/api/v1/resolve?ref=tmhsdigital/blender-developer-tools/mesh-editing-and-bmesh GET https://markdownregistry.com/api/v1/blob/321097564a094863c1e35d425b9fce348fe5d6d21e4340bb913e5f27b48b7219
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.