animation-tree SKILL.md skillA
animation-tree from summerengine/summer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add summerengine/summer/animation-tree@git:20261010.4ade947Pins git:20261010.4ade947 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- summerengine/summer
- Path
library/skills/animation-tree/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261010.4ade947, committed Oct 10, 2026
- First version recorded
- Sep 2, 2026
- Size
- 17,344 bytes
- Repository stars
- 86
- License
- MIT
Design and wire AnimationTree state machines and blend trees so clips respond to gameplay — locomotion blends, attack interrupts, hit reactions.
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
# AnimationTree — Wire Clips Into Behavior This skill generates nothing. It composes existing clips on an `AnimationPlayer` into an `AnimationTree` with a `StateMachine` for distinct states (idle / attack / hit / dead) and `BlendSpace` nodes for continuous parameters (walk-run blend by speed). Wired wrong, you get T-poses, snapping, or clips that cut each other off. The canonical Summer Engine stack: ``` Character (CharacterBody3D) ├── Skeleton3D (from the rigged GLB) ├── AnimationPlayer # holds the raw clips (idle, walk, run, attack_sword, ...) └── AnimationTree # references AnimationPlayer, drives behavior ``` Before adding the tree, prove direct `AnimationPlayer.play()` visibly moves the rig. The engine may import animation GLBs as `AnimationLibrary` resources or as `PackedScene`s with embedded `AnimationPlayer`s. If a copied clip appears in the list but the mesh T-poses, its tracks probably target a different root/skeleton path. Use the embedded player that came with the matching GLB, or remap/copy tracks only after confirming they target the active `Skeleton3D`. An inactive AnimationTree is also a no-op, so always set `AnimationTree.active = true`. …
Read the whole file at its exact version.
How to install
mdr add summerengine/summer/animation-tree@sha256:7fc0b6f9ea4249c2The line at the top of this page pins the label git:20261010.4ade947, 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_omxndeladz5655x2)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 2, 2026 and Oct 10, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261010.4ade947 latest | 2026-10-10 | 4ade947 | 17,344 B | A | view · diff |
| git:20260911.b4df358 | 2026-09-11 | b4df358 | 17,560 B | A | view · diff |
| git:20260910.5e63174 | 2026-09-10 | 5e63174 | 17,822 B | A | view · diff |
| git:20260902.548800b | 2026-09-02 | 548800b | 17,814 B | A | view · diff |
| git:20260902.56774bb | 2026-09-02 | 56774bb | 18,032 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (17344 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
- pass: No script tag
Source
summerengine/summer · 86 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_omxndeladz5655x2 GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/animation-tree GET https://markdownregistry.com/api/v1/blob/7fc0b6f9ea4249c2b85effb9334f0caf3e358fe005e96f793f3254512de0a6a5
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.