Unity Assets Pipeline
Part of the Unity Skills plugin.
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 |
|---|---|---|---|
| asset | SA* | Asset refresh/find/info | modules/asset/SKILL.md |
| importer | Mixed | Texture/audio/model import | modules/importer/SKILL.md (+ IMPORT_REFERENCE.md) |
| cleaner | SA* | Unused/duplicate assets | modules/cleaner/SKILL.md |
| optimization | Mixed | Asset optimization | modules/optimization/SKILL.md |
| package | Mixed* | UPM install/query | modules/package/SKILL.md |
| validation | SA* | Broken reference checks | modules/validation/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. asset_find, importer_set_texture_settings, cleaner_find_unused). Run validation before and after bulk cleanup/optimization passes to catch broken references early. cleaner and optimization skills can touch many assets at once — prefer *_batch where available and dryRun first.
Open the matching module doc before calling any skill whose exact parameters you don't already hold — dryRun first.