datnt-cell Unity Scene Authoring
Part of the Unity Skills plugin. This skill covers module-specific guardrails and routing; the shared REST protocol every call depends on is summarized below.
Unity Skills protocol (quick reference)
This plugin talks to the Unity Editor through a local REST server. Before the first skill call in a session:
GET /health— discover the server (it binds a port in8090–8100). ReadcurrentMode("approval"/"auto"/"bypass") andsurfaceProfile(full/guide/noSceneAuthoring) — confirmprojectNamematches the project you're editing.- Under
approvalmode, the first write to aFullAutoskill returnsMODE_RESTRICTEDand needs a user grant; underauto/bypasswrites execute directly.
dryRun gate: before executing any skill whose exact parameters you don't already hold, call POST /skill/<name>?mode=dryRun and iterate until the response says valid:true — never guess parameters from a skill name alone. Then execute the same call without ?mode=dryRun.
Batch execution: when touching 2+ objects, prefer POST /skills/batch ({"steps":[{"skill","args"}],"continueOnError":false}, up to 50 steps per call, also supports ?mode=dryRun) over repeated single-item calls.
Error codes:
| Code | Meaning |
|---|---|
MODE_RESTRICTED / MODE_FORBIDDEN |
Needs a user grant, or needs Bypass/Allowlist. |
SURFACE_EXCLUDED |
Hidden by the current surfaceProfile — a configuration boundary, not a failure; don't retry or route around it. |
MISSING_PARAM / TARGET_NOT_FOUND |
Bad or unresolvable arguments — dryRun for the schema, locate the target first. |
For the full protocol detail, error code catalog, and guide-mode manual-* docs, optionally install the unity-core plugin — it's not required, this summary covers what you need for this skill.
Modules in this skill
| Module | Mode | Description | Doc |
|---|---|---|---|
| gameobject | FA* | Object create/move/parent | modules/gameobject/SKILL.md |
| component | Mixed* | Component add/remove/configure | modules/component/SKILL.md |
| prefab | FA | Prefab create/apply/spawn | modules/prefab/SKILL.md |
| scene | SA* | Scene load/save/query | modules/scene/SKILL.md |
| editor | SA* | Play/select/undo/redo/change journal | modules/editor/SKILL.md |
Mode legend: SA = runs without grant in all modes, FA = needs grant under Approval, Mixed = check per-skill, * = contains auto-forbidden skills.
Routing
Skills are named <module>_<verb> (e.g. gameobject_create, component_add, prefab_apply, scene_load). Open the matching module doc above before calling any skill whose exact parameters you don't already hold — dryRun first.
Guidance mode
If surfaceProfile is guide or noSceneAuthoring, GameObject/Component/Scene writes may be hidden. In that case, give the user manual step-by-step guidance (menu paths, Inspector fields) instead of calling REST skills; for the full guidance-boundary table and manual-* step-by-step docs, the optional unity-core plugin covers this in more depth.
Batch-first rule
When touching 2+ objects, prefer *_batch skills over repeated single-item calls (POST /skills/batch, owned by the unity-dev-workflow skill's batch module).