slotted-actions-animation SKILL.md skillB
slotted-actions-animation 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/slotted-actions-animation@git:20261005.f80411bPins git:20261005.f80411b 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/slotted-actions-animation/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261005.f80411b, committed Oct 5, 2026
- First version recorded
- Apr 26, 2026
- Size
- 12,681 bytes
- Repository stars
- 17
- License
- a license file GitHub does not identify
Create and edit animation from Python under Slotted Actions (Blender 4.4+): Action, slots, layers, strips, channelbags. Bind the action slot, then reach F-curves through a channelbag; action_ensure_channelbag_for_slot exists only on 5.0+, so use strip.channelbag(slot, ensure=True) on 4.5 LTS. Use when the user inserts keyframes or builds F-curves in a script, hits AttributeError on action.fcurves in 5.x, or has keys that exist but never play back. 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
# Slotted Actions Animation ## Trigger Use this skill when the user: - Wants to create or edit animation from Python in Blender 5.x - Mentions `Action`, `slot`, `channelbag`, `keyframe_insert`, `fcurves` - Has older 4.x animation code (`action.fcurves.new(...)`) that no longer works in 5.x - Asks how to insert keyframes programmatically and have them persist ## What changed and why Blender **4.4** introduced the **Slotted Actions** data model to support non-linear, multi-target animation. The old model was a flat list of F-curves owned directly by the Action, which made it impossible for one Action to drive two different IDs (e.g. an armature pose and the armature's custom property channels at the same time) without overwriting each other. Two version boundaries matter: - **Blender 4.4 / 4.5 LTS**: the slotted data model (`action.slots`, `action.layers`, `strip.channelbag`) is present **alongside** the legacy flat API (`action.fcurves`, `action.groups`, `action.id_root`), which still works as a proxy. The helper `bpy_extras.anim_utils.action_get_channelbag_for_slot(action, slot)` exists; `action_ensure_channelbag_for_slot` does **not**. …
Read the whole file at its exact version.
How to install
mdr add tmhsdigital/blender-developer-tools/slotted-actions-animation@sha256:c553d80dab6d436fThe line at the top of this page pins the label git:20261005.f80411b, 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_57vn5cbqrgktcqjz)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Apr 26, 2026 and Oct 5, 2026, about one every 27 days. Its first recorded version is graded A and its latest B.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261005.f80411b latest | 2026-10-05 | f80411b | 12,681 B | B | view · diff |
| git:20261005.5e0299c | 2026-10-05 | 5e0299c | 12,087 B | A | view · diff |
| git:20261004.350b75d | 2026-10-04 | 350b75d | 11,931 B | A | view · diff |
| git:20260618.c39032d | 2026-06-18 | c39032d | 11,141 B | A | view · diff |
| git:20260613.e6324e5 | 2026-06-13 | e6324e5 | 8,886 B | A | view · diff |
| git:20260426.5a05f16 | 2026-04-26 | 5a05f16 | 8,885 B | A | view · diff |
| git:20260426.c441526 | 2026-04-26 | c441526 | 8,895 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 (12681 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_57vn5cbqrgktcqjz GET https://markdownregistry.com/api/v1/resolve?ref=tmhsdigital/blender-developer-tools/slotted-actions-animation GET https://markdownregistry.com/api/v1/blob/c553d80dab6d436fddb70fa8400b4f29351c6b26d91a38b3c9e13cd640dc07e5
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.