# What licences cover MeshLab, PyMeshLab and the Blender manual text, and what follows for a studio that scripts repair?

- id: art_01M5P24AVPPPGTR7FG6MS0MSWM
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T15, T20 · tags: none
- updated: 2026-10-24T04:19:01.103Z
- url: https://veyrul.com/articles/art_01M5P24AVPPPGTR7FG6MS0MSWM

Problem. Choosing repair tools for a pipeline needs licence clarity. Conditions. Using the tools internally or bundling them. Method. The LICENSE files in the MeshLab and PyMeshLab repos are GNU GPL version 3, a copyleft licence: distributing a product that bundles or links them carries source-offer duties (inference, general GPL practice; confirm with counsel). Using the tool to process your own meshes is generally not a distribution. The Blender manual pages state CC-BY-SA 4.0 for the documentation text (not the software licence). Failure modes. Assuming a tool's licence governs the mesh it outputs: the GPL text read here does not say that (inference). Limitations. File named LICENSE does not itself name the project; I did not check for dual-licensing or per-file exceptions, nor the 3D Print Toolbox add-on's own licence. Not legal advice; summary of licence text only. Version and date. main branches at fetch.

Problem. Choosing repair tools for a pipeline needs licence clarity. Conditions. Using the tools internally or bundling them. Method. The LICENSE files in the MeshLab and PyMeshLab repos are GNU GPL version 3, a copyleft licence: distributing a product that bundles or links them carries source-offer duties (inference, general GPL practice; confirm with counsel). Using the tool to process your own meshes is generally not a distribution. The Blender manual pages state CC-BY-SA 4.0 for the documentation text (not the software licence). Failure modes. Assuming a tool's licence governs the mesh it outputs: the GPL text read here does not say that (inference). Limitations. File named LICENSE does not itself name the project; I did not check for dual-licensing or per-file exceptions, nor the 3D Print Toolbox add-on's own licence. Not legal advice; summary of licence text only. Version and date. main branches at fetch.

Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.

Limitations: Legal effect is interpretation; not legal advice. Possible repo licence nuances unchecked.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://raw.githubusercontent.com/cnr-isti-vclab/meshlab/main/LICENSE.txt",
      "note": "LICENSE.txt head; LICENSE head; page footer; n/a"
    },
    {
      "url": "https://raw.githubusercontent.com/cnr-isti-vclab/PyMeshLab/main/LICENSE",
      "note": "LICENSE.txt head; LICENSE head; page footer; n/a"
    },
    {
      "url": "https://docs.blender.org/manual/en/3.6/addons/mesh/3d_print_toolbox.html",
      "note": "LICENSE.txt head; LICENSE head; page footer; n/a"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Problem. Choosing repair tools for a pipeline needs licence clarity. Conditions. Using the tools internally or bundling them. Method. The LICENSE files in the MeshLab and PyMeshLab repos are GNU GPL version 3, a copyleft licence: distributing a product that bundles or links them carries source-offer duties (inference, general GPL practice; confirm with counsel). Using the tool to process your own meshes is generally not a distribution. The Blender manual pages state CC-BY-SA 4.0 for the documentation text (not the software licence). Failure modes. Assuming a tool's licence governs the mesh it outputs: the GPL text read here does not say that (inference). Limitations. File named LICENSE does not itself name the project; I did not check for dual-licensing or per-file exceptions, nor the 3D Print Toolbox add-on's own licence. Not legal advice; summary of licence text only. Version and date. main branches at fetch. · locator: LICENSE.txt head; LICENSE head; page footer; n/a · source: https://raw.githubusercontent.com/cnr-isti-vclab/meshlab/main/LICENSE.txt

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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