# Is there a machine-readable catalogue of official templates that lets me preflight minimum ComfyUI version, required custom nodes and download size before loading one?

- id: art_01M5P28XN65PSVSETSQHP8B78B
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T08, T09 · tags: none
- updated: 2026-10-24T04:21:31.424Z
- url: https://veyrul.com/articles/art_01M5P28XN65PSVSETSQHP8B78B

Problem. Loading a template to find out it needs a newer core, a custom-node pack or tens of GB is slow. Conditions. Reading templates/index.json from the repo (also shipped in the package). Method. The manifest is a list of categories each with templates; per entry fields include name, title, tags, date, usage, minComfyUIVersion (present in 715 of 718), requiresCustomNodes (79), size in bytes, tutorialUrl (128), io (input/output node ids and files), openSource and thumbnail. Filter first by minComfyUIVersion against your core, then by requiresCustomNodes (most common: comfyui-kjnodes x41, comfyui_essentials x29, comfyui-videohelpersuite x24, comfyui_controlnet_aux x9), then by size. Note the manifest 'models' field holds display names (for example ['Nano Banana'] on an API template), not file names or URLs; real download links live in each workflow JSON's node properties (see C3-B682-12). Failure modes. Treating manifest 'models' as downloadable files; assuming size is present for ...

Problem. Loading a template to find out it needs a newer core, a custom-node pack or tens of GB is slow. Conditions. Reading templates/index.json from the repo (also shipped in the package). Method. The manifest is a list of categories each with templates; per entry fields include name, title, tags, date, usage, minComfyUIVersion (present in 715 of 718), requiresCustomNodes (79), size in bytes, tutorialUrl (128), io (input/output node ids and files), openSource and thumbnail. Filter first by minComfyUIVersion against your core, then by requiresCustomNodes (most common: comfyui-kjnodes x41, comfyui_essentials x29, comfyui-videohelpersuite x24, comfyui_controlnet_aux x9), then by size. Note the manifest 'models' field holds display names (for example ['Nano Banana'] on an API template), not file names or URLs; real download links live in each workflow JSON's node properties (see C3-B682-12). Failure modes. Treating manifest 'models' as downloadable files; assuming size is present for every entry ('size' key present in 696 of 718); API (partner-node) templates are 407 of 718 and need no local weights. Limitations. Fields are not documented in the README, so semantics are inferred from names and one sample. Version/date. 2026-10-24 UTC.

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

Limitations: Field meanings are inferred; entries lacking fields (for example size) cannot be preflighted. Snapshot of main.

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/Comfy-Org/workflow_templates/main/templates/index.json",
      "note": "templates/index.json; Architecture / Adding New Templates; researcher reasoning"
    },
    {
      "url": "https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/README.md",
      "note": "templates/index.json; Architecture / Adding New Templates; researcher reasoning"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Problem. Loading a template to find out it needs a newer core, a custom-node pack or tens of GB is slow. Conditions. Reading templates/index.json from the repo (also shipped in the package). Method. The manifest is a list of categories each with templates; per entry fields include name, title, tags, date, usage, minComfyUIVersion (present in 715 of 718), requiresCustomNodes (79), size in bytes, tutorialUrl (128), io (input/output node ids and files), openSource and thumbnail. Filter first by minComfyUIVersion against your core, then by requiresCustomNodes (most common: comfyui-kjnodes x41, comfyui_essentials x29, comfyui-videohelpersuite x24, comfyui_controlnet_aux x9), then by size. Note the manifest 'models' field holds display names (for example ['Nano Banana'] on an API template), not file names or URLs; real download links live in each workflow JSON's node properties (see C3-B682-12). Failure modes. Treating manifest 'models' as downloadable files; assuming size is present for every entry ('size' key present in 696 of 718); API (partner-node) templates are 407 of 718 and need no local weights. Limitations. Fields are not documented in the README, so semantics are inferred from names and one sample. Version/date. 2026-10-24 UTC. · locator: templates/index.json; Architecture / Adding New Templates; researcher reasoning · source: https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/templates/index.json

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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