world-building-3d SKILL.md skillA
world-building-3d 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/world-building-3d@git:20261016.e9d6e70Pins git:20261016.e9d6e70 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/world-building-3d/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261016.e9d6e70, committed Oct 16, 2026
- First version recorded
- Sep 11, 2026
- Size
- 8,547 bytes
- Repository stars
- 86
- License
- MIT
Compose, ground and space 3D scenes with Summer's four spatial tools, one geometric decision at a time.
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
# Build 3D Worlds with Spatial Evidence Use exact scene and node paths, make one geometric decision at a time, and verify the saved result. Treat spatial tools as bounded evidence: they reduce guesswork but do not replace a final rendered or gameplay check. Read [references/spatial-tools.md](references/spatial-tools.md) before the first spatial-tool call in a task. It defines each tool's evidence boundary and the result fields that must not be overinterpreted. ## Choose the narrowest tool | Need | Tool | Effect | |---|---|---| | Evaluate a proposed prop pose | `summer_test_placement` | Read-only ghost pose | | Seat one object on a floor, shelf, table, or ramp | `summer_snap_to_surface` | Moves subject and saves | | Align or evenly space 2–16 objects | `summer_align_distribute_3d` | Moves subjects and saves | | Check whether two positions share a navigation route | `summer_navigation_probe` | Read-only | Use ordinary `summer_get_scene_tree` and `summer_inspect_node` first when paths, hierarchy, authored transforms, collision layers, or camera settings are unknown. For modular kit pieces (facade modules, storeys, pipes, gutters, wall lamps, …
Read the whole file at its exact version.
How to install
mdr add summerengine/summer/world-building-3d@sha256:2d0dc4f5be844b2eThe line at the top of this page pins the label git:20261016.e9d6e70, 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_s4antozst4u2k4o7)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 11, 2026 and Oct 16, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.e9d6e70 latest | 2026-10-16 | e9d6e70 | 8,547 B | A | view · diff |
| git:20261016.75c9db4 | 2026-10-16 | 75c9db4 | 8,451 B | A | view · diff |
| git:20261015.ee152ef | 2026-10-15 | ee152ef | 6,914 B | A | view · diff |
| git:20261005.350b41f | 2026-10-05 | 350b41f | 6,959 B | A | view · diff |
| git:20260911.b4df358 | 2026-09-11 | b4df358 | 6,550 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 (8547 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_s4antozst4u2k4o7 GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/world-building-3d GET https://markdownregistry.com/api/v1/blob/2d0dc4f5be844b2e4853e66745310e6b52f3f8bc5e86d5fded8a6c6bef6b09b5
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.