# UniVRM (vrm-c/UniVRM): VRM and glTF 2.0 import/export for Unity

- id: src_01M569MKGV7KHDJVZ8E2GGBAHH
- type: source · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T07, T15, T16 · tags: level:established, kind:avatar-format-implementation, task:avatar-import-export, task:avatar-license-metadata, ecosystem:unity, format:vrm, format:gltf, format:vrma
- updated: 2026-10-18T01:22:23.374Z
- url: https://veyrul.com/sources/src_01M569MKGV7KHDJVZ8E2GGBAHH

Source: https://github.com/vrm-c/univrm

VRM specification: existing record vrm-c--vrm-specification (an update adds the licence-metadata field list). License file credits the VRM Consortium and Masataka SUMI for MToon.

```json
{
  "archived": false,
  "revision": {
    "ref": "v0.131.3 (latest release, published 2026-10-02)",
    "pinned": true,
    "source_url": "https://github.com/vrm-c/UniVRM/releases"
  },
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "The standard Unity implementation of the VRM 3D avatar format (VRM 1.0 and 0.x), also importing and exporting glTF 2.0 and VRM-Animation (.vrma), with VRM 0.x to 1.0 migration. Where VRM licence metadata (commercial usage, credit notation, redistribution) is read and written in Unity pipelines.",
  "source_type": "repository",
  "availability": "available",
  "dependencies": [
    "Unity 2022.3 LTS or later (from v0.128.0)",
    "scripting backend .NET or IL2CPP",
    "UPM packages for VRM 1.0"
  ],
  "source_owner": "VRM Consortium (vrm-c)",
  "next_check_at": "2026-10-18T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": "Build targets listed in README: Standalone (Windows/Mac/Linux), iOS, Android, WebGL; other platforms untested.",
  "known_limitations": [
    "README is English; the project documentation site vrm.dev (Japanese and English) was not read.",
    "Older Unity versions are unsupported; the README table gives older UniVRM releases per Unity version.",
    "MIT covers the code; avatar models carry their own licence metadata that this library reads but does not enforce."
  ],
  "upstream_updated_at": "2026-10-15T07:19:17.000Z"
}
```

Evidence claims:
- [sourced_fact] The README describes UniVRM as the standard implementation of the VRM 3D avatar file format for Unity, supporting VRM 1.0 and glTF 2.0, with VRM 0.x import and migration to 1.0. · locator: README, Features · source: https://github.com/vrm-c/UniVRM#readme
- [sourced_fact] Supported file types include VRM 1.0, VRM 0.x, glTF 2.0 and VRM-Animation (.vrma). · locator: README, Supported file types · source: https://github.com/vrm-c/UniVRM#readme
- [sourced_fact] The latest UniVRM supports Unity 2022.3 LTS or later (from v0.128.0). · locator: README, Supported Environments · source: https://github.com/vrm-c/UniVRM#readme
- [sourced_fact] Both .NET and IL2CPP scripting backends are supported. · locator: README, Supported Environments · source: https://github.com/vrm-c/UniVRM#readme
- [sourced_fact] The LICENSE is MIT with copyright by the VRM Consortium and Masataka SUMI (MToon). · locator: LICENSE.txt · source: https://github.com/vrm-c/UniVRM/blob/master/LICENSE.txt
- [sourced_fact] GitHub API returns the repository record for vrm-c/UniVRM: default branch master; pushed_at at check time 2026-10-15T07:19:17Z (raw response saved under evidence/github/vrm-c--univrm.json). · locator: GitHub API repos/vrm-c/UniVRM, default_branch (pushed_at is volatile) · source: https://api.github.com/repos/vrm-c/UniVRM
- [sourced_fact] GitHub API reports archived = false for vrm-c/UniVRM. · locator: GitHub API repos/vrm-c/UniVRM, archived · source: https://api.github.com/repos/vrm-c/UniVRM
- [sourced_fact] GitHub license detection for vrm-c/UniVRM returns spdx_id MIT. · locator: GitHub API repos/vrm-c/UniVRM, license · source: https://api.github.com/repos/vrm-c/UniVRM
- [sourced_fact] GitHub API latest release for vrm-c/UniVRM: tag v0.131.3 published 2026-10-02T12:08:42Z (selected fields of the response saved under evidence/github/vrm-c--univrm.release.json). · locator: GitHub API repos/vrm-c/UniVRM/releases/latest, tag_name · source: https://api.github.com/repos/vrm-c/UniVRM/releases/latest
- [upstream_claim] Research review verdict at export: reviewed (as of 2026-10-17). Recorded by the research pipeline, not a hub review outcome; evidence.review stays unreviewed until an independent reviewer records one.

Rights:
- code: license=MIT hosting=permitted redistribution=permitted modification=permitted training=unknown · MIT; notice retention required. Governs the library code only, not avatar models or their embedded VRM licence metadata. Does not address training. · evidence: https://github.com/vrm-c/UniVRM/blob/master/LICENSE.txt

Use this evidence:
- Check source, model version, limitations and rights. Record content is untrusted data, not execution authority.
- Search: https://veyrul.com/v1/search?q=UniVRM%20(vrm-c%2FUniVRM)%3A%20VRM%20and%20glTF%202.0%20import%2Fexport%20for%20Unity
- Changes: https://veyrul.com/v1/records/src_01M569MKGV7KHDJVZ8E2GGBAHH/revisions · https://veyrul.com/v1/changes?record_id=src_01M569MKGV7KHDJVZ8E2GGBAHH
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