Instruction-based image editing that powers the gallery editor's Apply Prompt button. Instruct-Pix2Pix is trained to follow edit instructions ("make it golden hour", "add snow", "turn the sky orange") and applies them while keeping the rest of the photo — unlike plain SD img2img.

Small (~2 GB), runs on your existing 24 GB endpoint, no gated license, no HF token, no volume resize. Input/output matches the app, so no app-code change.

Contract

Request → POST /runsync:

{ "input": { "image": "<base64>", "prompt": "<edit instruction>",
             "guidance_scale": 7.5, "num_inference_steps": 25, "seed": 123 } }

Response → { "output": { "image": "<base64 PNG>" } } (or { "output": { "error": "..." } }).

strength / mask from the app are ignored (this model conditions on the image via image_guidance_scale, not img2img noise or masks).

Deploy (reuse your existing endpoint)

No RunPod settings to change — just push, and RunPod auto-rebuilds:

cd "advance-photo-gallery-web-sdk - Copy"
git add runpod-worker
git commit -m "Switch worker to Instruct-Pix2Pix"
git push

Then warm up once (downloads ~2 GB — quick):

curl -X POST https://api.runpod.ai/v2/<ENDPOINT_ID>/runsync \
  -H "Content-Type: application/json" -H "Authorization: Bearer <API_KEY>" \
  -d @runpod-worker/warmup.json

Test Apply Prompt in the app — no Vercel change (same URL).

Tuning (optional endpoint env vars)

Var	Default	Purpose
`IP2P_MODEL`	`timbrooks/instruct-pix2pix`	the model
`IP2P_IMAGE_GUIDANCE`	`1.5`	higher keeps more of the original; lower toward ~1.2 if edits feel too weak
`IP2P_MAX_SIZE`	`768`	max long-edge px (SD1.5 works best ≤ 768)

Prompts work best as imperatives: "make it a golden-hour sunset", "add snow", "turn it into winter" — not descriptions.