Character Studio — Prompt (ComfyUI custom node)

A ComfyUI custom node that assembles a natural-language character portrait prompt from structured fields (origin, age, build, skin, face, hair, wardrobe, camera & lens, …).

The node exposes every field as a widget (dropdowns for the enumerated options, text inputs for the rest) and outputs a single STRING — connect it to a CLIP Text Encode.

Why

Character consistency is easier when the description is complete and deterministic. Leaving traits out creates a prompt "vacuum" that the model fills with its own prior; this node uses positive, template-driven defaults (e.g. clean-shaven, no freckles, a fallback wardrobe) so every field is stated explicitly.

Install

Clone into your ComfyUI custom_nodes folder and restart ComfyUI:

cd ComfyUI/custom_nodes
git clone https://github.com/Perry76/character-studio-prompt.git

No extra dependencies (Python standard library only). Restart ComfyUI — the node appears under Add Node → Character Studio → Portret-prompt. Connect its prompt output to a CLIP Text Encode.

Usage

1. Add the node Character Studio — Portret-prompt.
2. Pick the character traits in the dropdowns / text fields. Every field has a sensible default, so an untouched node still produces a coherent, fully-clothed portrait prompt.
3. (Optional) type anything into extra — it is appended to the end of the prompt.
4. Connect it to a CLIP Text Encode. The node's prompt output is a STRING, but a CLIP Text Encode's text field is a widget by default. Right-click the CLIP Text Encode (Prompt) node → Convert Widget to Input → text (older ComfyUI: Convert text to input), then drag the node's prompt output onto that new text input.
5. Wire the CLIP Text Encode's CONDITIONING output into your sampler's positive input, as usual.

Tip: to see the exact prompt the node produced, add any "Show Text" / string-preview node and connect prompt to it.

Fields & manifest

The fields, options, defaults and the prompt template all come from cast_character.manifest.json, which is bundled with this node — after git clone it works out of the box, nothing to configure. Edit that file (and restart ComfyUI) to change the available options.

Optional — sync with a running Character Studio app

Only relevant if you also run the Character Studio app and want this node to follow the app's live manifest (so edits you make to the character fields in the app show up here automatically): set the environment variable CHARACTER_STUDIO_MANIFEST to the full path of the app's cast_character.manifest.json.

Resolution order: CHARACTER_STUDIO_MANIFEST → the bundled copy. Restart ComfyUI after changing the manifest to load new options.

Notes / limits

• Enums are dropdowns; for one-off additions use the optional extra field.
• Wardrobe is a free-text field. Leave it empty and a default outfit (casual everyday clothing) is used so the subject is never rendered nude; type your own outfit to override it.
• The structured wardrobe builder, per-field custom values, and other Character Studio flows are app-only.

Development

python -m pytest tests/ -q

The tests cover the ported assembly logic, the dynamic widget builder, and the empty-wardrobe fallback. A parity test (node output == the Character Studio app's compose.py) runs only when the app is present and is skipped otherwise.

License

MIT — see LICENSE.