importing-subgraphs

Development

Imports and registers subgraph blueprints into the ComfyUI workflow_templates repository. Handles placing blueprint JSON files, adding thumbnails, running the import/sync pipeline, and validating results. Use when asked to: import a subgraph, add a blueprint, register a blueprint, add a subgraph blueprint, import a subgraph blueprint, contribute a subgraph, add a new node component, publish a blueprint, upload a subgraph, create a blueprint, onboard a subgraph, add a reusable node. Triggers on: import subgraph, add blueprint, subgraph blueprint, new blueprint, register blueprint, blueprint import.

QUICK START

How to use this skill

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Source SKILL.md: https://github.com/Comfy-Org/workflow_templates/blob/HEAD/.claude/skills/importing-subgraphs/SKILL.md

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Importing Subgraph Blueprints

Subgraph blueprints are pre-built ComfyUI node components stored in blueprints/ and shipped via the comfyui-subgraph-blueprints package.

Rules

Never modify scripts, build tooling, or CI configuration.
Always validate after changes (Step 4).
Blueprint filenames must be snake_case — the import script handles renaming automatically.
Use double-quotes " in all JSON files.
Blueprint JSON must contain a definitions.subgraphs array with at least one entry.

Step 1 — Obtain the Blueprint JSON

Two sources:

Option A — Import from an external directory:

python scripts/blueprints/import_blueprints.py --source /path/to/external/blueprints/

The script copies all *.json files (skipping index*.json) into blueprints/, renames them to snake_case, regenerates blueprints/index.json, and updates blueprints_bundles.json.

Option B — Manual placement (single file):

Export the subgraph from ComfyUI (Save → Export workflow JSON).
Copy the .json file to blueprints/ with a snake_case name, e.g. my_blueprint.json.
Run the import script (no --source needed) to normalize and regenerate index + bundles:
```
python scripts/blueprints/import_blueprints.py
```

Required blueprint JSON structure

The file must contain definitions.subgraphs[0] with these fields:

Field	Required
`name`	yes — display name shown in the node palette
`inputs`	yes — exposed input slots
`outputs`	yes — exposed output slots
`nodes`	yes — internal ComfyUI nodes

Step 2 — Add a Thumbnail (Optional)

Thumbnail files live in blueprints/ and follow the naming pattern:

{blueprint_name}-1.webp     # primary (required for thumbnail display)
{blueprint_name}-2.webp     # secondary (optional, for compare/hover effects)

Convert to webp format (lossy ~65% quality).
The import script sets "mediaSubtype": "webp" in index.json automatically.

Step 3 — Embed Model Metadata (Recommended)

For every model-loading node inside definitions.subgraphs[0].nodes (e.g. UNETLoader, VAELoader, CLIPLoader), add a "models" array to the node's "properties":

"properties": {
  "Node name for S&R": "UNETLoader",
  "cnr_id": "comfy-core",
  "ver": "0.3.40",
  "models": [
    {
      "name": "flux1-dev.safetensors",
      "url": "https://huggingface.co/.../resolve/main/flux1-dev.safetensors?download=true",
      "hash": "<sha256>",
      "hash_type": "SHA256",
      "directory": "diffusion_models"
    }
  ]
}

The name field must exactly match the corresponding widgets_values entry. The import script surfaces model names automatically in index.json (limited to first 5).

Step 4 — Sync to Packages

After import_blueprints.py succeeds, push assets into the package directory and regenerate the manifest:

python scripts/sync/sync_blueprints.py

This writes packages/core/src/comfyui_workflow_templates_core/blueprints_manifest.json and copies all blueprint files into packages/blueprints/src/comfyui_subgraph_blueprints/blueprints/.

Step 5 — Validate

python scripts/validate/validate_blueprints.py

Checks:

JSON syntax for all blueprint files
index.json against index.schema.json
Blueprint structure (definitions.subgraphs present with required fields)
blueprints_bundles.json consistency with files on disk

Fix all errors before continuing. CI will fail if bundles or manifests are out of sync.

Step 6 — Bump Version

Increment the version field in the root pyproject.toml. CI uses this to detect changes and publishes affected packages to PyPI.

Common Requests

User says	Agent action
"Import blueprints from this folder"	Step 1 Option A, then Steps 4–6
"Add this subgraph JSON as a blueprint"	Step 1 Option B, then Steps 4–6
"Add a thumbnail for blueprint X"	Step 2 only, then re-run Step 4
"Embed model info into this blueprint"	Step 3 only, then re-run Steps 1, 4, 5
"Validate blueprints"	Step 5 only
"Sync blueprints to packages"	Step 4 only
"Why does the index not have my blueprint?"	Check filename is snake_case, re-run `import_blueprints.py`

File Quick-Reference

File / Dir	Purpose
`blueprints/`	Blueprint JSON files and thumbnail images
`blueprints/index.json`	Generated metadata index (do not edit manually)
`blueprints/index.schema.json`	JSON schema for index validation
`blueprints_bundles.json`	Generated list of all blueprint IDs
`scripts/blueprints/import_blueprints.py`	Normalize filenames, generate index.json and bundles
`scripts/sync/sync_blueprints.py`	Generate manifest, copy assets to package directories
`scripts/validate/validate_blueprints.py`	Validate all blueprints and consistency checks
`pyproject.toml`	Root package version (bump before PR)
`packages/blueprints/`	`comfyui-subgraph-blueprints` package (generated assets)
`packages/core/.../blueprints_manifest.json`	Generated manifest consumed by the Python API