procedural-animation SKILL.md skillA
procedural-animation 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/procedural-animation@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/procedural-animation/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261010.4ade947, committed Oct 10, 2026
- First version recorded
- Sep 2, 2026
- Size
- 16,080 bytes
- Repository stars
- 86
- License
- MIT
Runtime bone modification on top of clips — head look-at, foot IK, hand-grabs-prop, additive lean, recoil. Code-and-modifier patterns, not generation.
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
# Procedural Animation — Bones Driven by Code Generated clips cover most of a character's motion. The rest — the eye contact when an NPC speaks, feet that plant on slopes, hands that wrap a sword grip, the lean into a sprint, the recoil from a hit on the left shoulder — is procedural. In Summer Engine this is done via the `SkeletonModifier3D` family attached to the `Skeleton3D`, plus additive blend layers on the `AnimationTree`. None of it is generative; this skill is a set of recipes. Limit: Summer Engine's current IK is good enough for look-at, foot-snap, and simple two-bone arm/leg chains. It is not a full-body IK system with weight redistribution. For combat-grappling or contact-heavy interactions, hand-author the contact frame and accept some clipping. ## When to use this skill - Feet clip into / float over uneven terrain. - NPC head doesn't track the player during conversation — feels dead-eyed. - Character's hand doesn't actually hold the sword — pen-through. - Body doesn't lean into turns / aiming. - Hit reactions need to come from the hit *direction* (recoil left when struck left), not just one canned animation. - Ragdoll on death. ## When NOT to use this skill …
Read the whole file at its exact version.
How to install
mdr add summerengine/summer/procedural-animation@sha256:383cc87cbaade54eThe 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_qztn3tnzcfbgxteg)
1 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 | 16,080 B | A | view · diff |
| git:20261006.cb682ef | 2026-10-06 | cb682ef | 16,341 B | A | view · diff |
| git:20260911.b4df358 | 2026-09-11 | b4df358 | 16,226 B | A | view · diff |
| git:20260910.5e63174 | 2026-09-10 | 5e63174 | 16,439 B | A | view · diff |
| git:20260902.548800b | 2026-09-02 | 548800b | 16,423 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 (16080 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_qztn3tnzcfbgxteg GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/procedural-animation GET https://markdownregistry.com/api/v1/blob/383cc87cbaade54ef638b974eccb4f087596612612d3e162159244721518c02e
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.