Local ComfyUI / receipt walkthrough
Know which local image run you are looking at.
This small ComfyUI node gives declared run values a stable key, writes hashes beside saved images, and refuses to overwrite a finished receipt.
Local-only demo
model: none / network: noneWhat you get
A key, one image, one receipt.
Start with the no-model prompt below. It makes a 128px empty image, so you can confirm the receipt behavior before you connect it to SD 1.5 or another workflow.
- Run key
- SHA-256 of your declared namespace, label, seed, and parameter record.
- Artifact
- PNG byte hash, dimensions, and a receipt written after the image files.
- Retry
ALREADY_IDENTICALwhen the same completed result is already there.- Collision
- A changed image or prompt under the same key stops instead of overwriting.
Do this in order
A proof run before a production run.
The starter stays on your own machine. It does not reach DemoAPI.org or ask ComfyUI to load a model.
- 01 / ADD THE NODE
Put Local Run Receipts in
custom_nodes.Until the Comfy Registry listing is live, clone the public source into your ComfyUI installation and restart ComfyUI.
- 02 / RUN THE STARTER
Keep ComfyUI on loopback and run the included Python file.
python run-receipt-starter.pytalks only to127.0.0.1:8188. Pass--portif your local ComfyUI uses another port. - 03 / CHECK THE RESULT
Open the receipt beside the image.
The first pass reports
CREATED. Run it again unchanged to getALREADY_IDENTICALwithout replacing anything.
Separate boundary
The node is a local file writer, not a remote-control feature.
- It can write
- Safe output subfolders inside ComfyUI’s normal output directory, image bytes, and a compact receipt.
- It cannot do
- Networking, model downloads, remote commands, path escapes, or bit-for-bit reproducibility claims.
- Dispatch remains
- A separate account product with an outbound-only Station, sealed recipes, and bounded Run fields.