# Retail Virtual Tryon > Creates virtual try-on agents supporting image and video (catwalk animation) try-ons on Google Cloud (Gemini image models and Veo on Gemini Enterprise Agent Platform). Handles resource setup, user photo uploading, image/video generation pipelines, local testing, and evaluation. - Skill: `google/retail-virtual-tryon` (Agent Skill, multi-file: 33 files) - Install (CLI): `npx skillmds@latest add google/retail-virtual-tryon` - Raw SKILL.md: https://api.skillmd.com/api/skills/google/retail-virtual-tryon/raw - Safety review: pending (external: skill-scanner PASS, skillspector CAUTION) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: DevOps & Infra - Author: Google (https://skillmd.com/u/google) - Updated: 2026-09-10 - Page: https://skillmd.com/skills/google/retail-virtual-tryon --- # Virtual Try-On Agent Creates virtual try-on (VTO) agents on Google Cloud supporting image and video (catwalk animation) try-on modes. ## STOP -- READ THIS BEFORE RESPONDING **Check your operating mode first — there are two distinct modes:** ### Mode A: Deployed Try-On Agent **If the system context tells you** that setup is complete (e.g. it says "You are a DEPLOYED try-on agent", or the conversation history shows setup has already been completed) — **skip Q-MODE entirely.** Respond directly to the user's try-on query. Do NOT output the Q-MODE block. Do NOT mention setup. ### Mode B: First-time Setup (default) **If there is no such context** (fresh invocation, no prior setup) — your VERY FIRST response MUST be the Q-MODE block below. Nothing else. Do NOT ask about products, industry, GCP project, or anything else first. Do NOT propose a plan. Do NOT explain what you will do. Your first message to the user must be EXACTLY this (copy-paste, no changes): ``` [skill: retail-virtual-tryon] active. Q-MODE: Pick a setup mode? [default: 1] 1. Quick start -- Local testing sandbox, interactive 6-question config, ~90s. Best for demos. 2. Export Web App & GCS Catalog Sync -- Generate standalone containerized codebase, GCS catalog sync, and Cloud Run config, ~3 min. ``` Then STOP and wait for the user's answer. Accept: `1`, `quick`, empty/Enter (= Quick Start), `2`, `export`, `sync` or `webapp` (= Export Web App & GCS Catalog Sync). ## Execution Rules 1. **Q-MODE first, always.** No exceptions. No preamble. - **CRITICAL WARNING**: Do NOT automatically run setup or deployment scripts (e.g. `setup_tryon.py`, `export_app.py`, `deploy_cloudrun.sh`) upon receiving a general request like "I want to create/deploy a VTO app on GCP". You MUST first present the Q-MODE setup menu choice and wait for the user to select Mode 1, 2, or 3. 2. **One question at a time. Show the default. Accept empty input.** Format: `Q: ? [default: ]` Pressing Enter = use the default. **NEVER ask multiple questions in one turn.** 3. **Execute steps in order.** Do NOT jump ahead or skip steps. 4. **Verify each step succeeded** before moving to the next. 5. **Save all answers to `./design-spec.md`** (in the workspace) as you collect them. After the interview, run `.venv/bin/python "$SKILL_DIR/scripts/setup.py" --config ./design-spec.md` (see the Workspace Setup section to resolve `$SKILL_DIR`). 6. **Confirm completion** of each step before proceeding. **Before Quick Start has launched setup, the user can say "export", "webapp", or "deploy" to switch to Mode 2 (Export Web App & GCS Catalog Sync).** Carry over answers already given for project, mode, and region; ask only the remaining Mode-2 questions (GCS catalog bucket, export directory). After setup.py has already started buckets/APIs, the workflow is committed -- to run Mode 2 instead, start a fresh workspace. ## Workspace Setup The skill has two locations: - **Install dir** -- where SKILL.md and scripts live (varies by host) - **Workspace** -- the agent's cwd; design-spec.md, .venv, and per-run state live here By the end of this section the workspace must have `.venv/` (with the skill installed editable + `[adk]` extras), `design-spec.md`, and `SKILL_DIR` exported in the shell. Run this as ONE shell command -- splitting it across tool calls loses state: ```bash SKILL_DIR=$(for d in ~/.claude/skills ~/.agents/skills ~/.gemini/skills ~/.cursor/skills; do [ -f "$d/retail-virtual-tryon/SKILL.md" ] && echo "$d/retail-virtual-tryon" && break done) bash "$SKILL_DIR/scripts/bootstrap.sh" ``` `bootstrap.sh` finds a Python 3.10+ interpreter (with absolute-path fallback for sandboxed shells), creates `.venv`, installs the skill editable with the `[adk]` extras, and copies `design-spec.md` into the workspace. All scripts run from the install dir against the workspace config. **Use `.venv/bin/python`, not bare `python`** -- bare `python` may resolve to a Python without the skill's editable install on sys.path. ```bash .venv/bin/python "$SKILL_DIR/scripts/setup.py" --config ./design-spec.md ``` Edit `./design-spec.md` and set `gcp_project_id` (the agent will do this based on the user's answers in Q-MODE). ## Mode 1: Quick start (4-5 questions) | Q | Question | Default | Source | |---|---|---|---| | Q-A | GCP project ID? | `$GOOGLE_CLOUD_PROJECT` or `gcloud config get-value project` | env / gcloud | | Q-B | Try-on mode? | `2` (both Image + Veo Video) | prompt | | Q-C | GCP Region? | `us-west1` | prompt | | Q-D | Catalog Path? | `demo` (type 'demo' to use bundled catalog, or specify local folder, or gs:// URI) | prompt | | Q-E | Upload local catalog to GCS? *(Only asked if Q-D is a custom local folder)* | `1` (Yes) | prompt | ### Question Formats & Accepted Choices: - **Q-B: Try-on mode?** Format to print: ``` Q: Try-on mode? [default: 2] 1. image_only (Faster, static images only) 2. image_and_video (Catwalk video animations via Veo) ``` Accept: `1` (= `image_only`), `2` (= `image_and_video`), `image_only`, `image_and_video`. - **Q-D: Catalog Path?** Accept: `demo` (uses bundled catalog), local directory path, or GCS URI starting with `gs://`. - **Q-E: Upload local catalog to GCS?** Format to print: ``` Q: Upload local catalog to GCS? [default: 1] 1. Yes (Sync and host catalog in GCS) 2. No (Run locally using local folder assets) ``` Accept: `1` (= `Yes`), `2` (= `No`), `Yes`, `No`. After collecting these answers, do this **automatically**: 1. Write the answers to `./design-spec.md` (in the workspace), filling in: - `gcp_project_id` - `tryon_mode` - `tryon_model` (always use `flash`) - `tryon_output_bucket` (default: `{project_id}-tryon-output`) - `tryon_upload_bucket` (default: `{project_id}-tryon-uploads`) - `gcp_region` - `tryon_catalog_path` - `tryon_catalog_upload` (set to `true` by default, set to `false` only if Q-E is answered as `No`) 2. Tell the user: "Setting up local sandbox environment resources..." 3. Run: `.venv/bin/python "$SKILL_DIR/scripts/setup.py" --config ./design-spec.md` 4. Stream the output. On success, start the local sandbox server in the background: `.venv/bin/python "$SKILL_DIR/scripts/start_sandbox.py" --config ./design-spec.md` 5. Provide the user with the clickable localhost link to test: "VTO fitting room sandbox is running! Open http://localhost:8080 in your browser to test it." ## Mode 2: Export Web App & GCS Catalog Sync (4 questions) | Q | Question | Default | Source | |---|---|---|---| | Q2-A | GCP project ID? | `$GOOGLE_CLOUD_PROJECT` or `gcloud config get-value project` | env / gcloud | | Q2-B | Try-on mode? | `2` (both Image + Veo Video) | prompt | | Q2-C | GCS Catalog Bucket name? | `{project_id}-tryon-catalog` | prompt | | Q2-D | Target Directory to export code? | `./vto-retail-app` | prompt | ### Question Formats & Accepted Choices: - **Q2-B: Try-on mode?** Format to print: ``` Q: Try-on mode? [default: 2] 1. image_only (Faster, static images only) 2. image_and_video (Catwalk video animations via Veo) ``` Accept: `1` (= `image_only`), `2` (= `image_and_video`), `image_only`, `image_and_video`. After collecting these answers, do this **automatically**: 1. Write the answers to `./design-spec.md` (in the workspace), filling in: - `gcp_project_id` - `tryon_mode` - `gcs_catalog_bucket` (starts with `gs://...`) - `export_directory` - `gcp_region` (default: `us-west1`) - `tryon_model` (always use `gemini-2.5-flash-image`) 2. Tell the user: "Setting up Cloud resources, exporting containerized codebase, and deploying to Google Cloud Run..." 3. Run: `.venv/bin/python "$SKILL_DIR/scripts/export_app.py" --config ./design-spec.md --skill-dir "$SKILL_DIR"` 4. Run GCS sync verification: `.venv/bin/python "$SKILL_DIR/scripts/setup_tryon.py" --config ./design-spec.md` 5. Build and Deploy container to Google Cloud Run: `gcloud run deploy vto-retail-app --source ./vto-retail-app/ --region us-west1 --project {gcp_project_id} --allow-unauthenticated` 6. Get the deployed service URL: `gcloud run services describe vto-retail-app --region us-west1 --project {gcp_project_id} --format="value(status.url)"` 7. Output the following structured instructions to the user: - Clickable Cloud Run service link: "🚀 **VTO App is deployed and running on Cloud Run! Open [Cloud Run App URL] in your browser to test it directly.**" - **How to Sync Catalog Images to GCS**: ```bash gsutil -m rsync -r ./my_clothes/ gs://{gcs_catalog_bucket}/ # Then force index refresh: curl -X GET "https://{cloud_run_url}/api/catalog?force=true" ``` - **How to Embed in Your Website**: ```html ``` ## When to Use - Building **virtual try-on fitting rooms** for e-commerce. - Creating interactive **catwalk-style video animations** showing how clothes look when walking. - Enabling **general retail try-on** for accessories, jewelry, eyewear, or clothes. Do NOT use for furniture/home styling (use room placement tools), or complex 3D avatar creation. ## Resource Setup Set the parameters in `./design-spec.md` (in the workspace), then run: ```bash .venv/bin/python "$SKILL_DIR/scripts/setup.py" --config ./design-spec.md ``` On success, local sample catalog images will be generated under `./catalog_images/` (unless a GCS bucket or custom catalog path was specified, in which case bucket access will be verified). ## Testing & Verification Set the required environment variables in the shell that runs the agent: ```bash export GOOGLE_CLOUD_PROJECT="" export TRYON_OUTPUT_BUCKET="-tryon-output" export TRYON_UPLOAD_BUCKET="-tryon-uploads" export GEMINI_IMAGE_MODEL="flash" # or pro / gemini-2.5-flash-image / gemini-2.5-pro-image ``` ### Run using `adk web` Launch the interactive web UI. **Use `.venv/bin/adk`, not bare `adk`** -- bare `adk` may resolve to a global Python (pyenv, brew, etc.) whose ADK can't find the skill and reports an empty app list (UI loads, but `/list-apps` returns `[]` and queries time out). ```bash .venv/bin/adk web . ``` You can start a chat session and test VTO by providing: - Product ID: `shirt_001` or `sunglasses_001` - User Photo: Upload `catalog_images/sample_user.jpg` or any photo of yourself. - Request: "Try on this shirt for me" or "Show me a catwalk video wearing these sunglasses". ### Direct Python Smoke Test Run a quick test script without the UI: ```bash # Test image try-on .venv/bin/python -c " from scripts.tryon_agent import try_on_product_image res = try_on_product_image('shirt_001', 'catalog_images/sample_user.jpg', 'catalog_images/shirt_001.jpg', 'clothing', 'red shirt') print(res) " # Test video try-on (Veo) .venv/bin/python -c " from scripts.tryon_agent import try_on_product_video res = try_on_product_video('sunglasses_001', 'catalog_images/sample_user.jpg', 'catalog_images/sunglasses_001.jpg', 'eyewear', 'sunglasses') print(res) " ``` ## Evaluation Verify outputs using the local evaluation YAML. Ensure image consistency, correct garment placement, and no visual distortions. ## Sandbox Visual Testing To test the VTO skill interactively with your own catalog of product images, launch the Sandbox Dashboard: 1. Start the FastAPI local server: ```bash .venv/bin/python "$SKILL_DIR/scripts/start_sandbox.py" --config ./design-spec.md ``` 2. Open [http://localhost:8080](http://localhost:8080) in your browser. 3. Upload your own portrait photo, select any product card from the scanned catalog, and click **Generate Try-On Image**. 4. To index a custom local folder of images, type the folder path in the search header input and click **Scan** (uses Gemini to automatically catalog and describe them). ## Gotchas - **Veo video resolution/duration**: Video generation via Veo takes ~30-60s. Be patient. - **Image Models**: Use `flash` (recommended) or `pro` for general try-on. - **Privacy Compliance**: ephemerally upload user photos into the uploads bucket with a 24-hour Lifecycle auto-delete rule (configured automatically by `setup_tryon.py`). ## Troubleshooting | Error pattern | Likely cause | Fix | |---|---|---| | `BILLING_DISABLED` | GCP project has no billing | Link billing account in Cloud Console | | `API has not been used` / `disabled` | Required API disabled | Run: `gcloud services enable aiplatform.googleapis.com storage.googleapis.com` | | `PermissionDenied` on GCS | Service Account lack rights | Grant `roles/storage.admin` | | `MethodNotImplemented: 501` / `Model not found` | Selected model is unavailable in region | Check your GCP project region availability | ## Completion Checklist - [ ] GCP project ID and try-on mode configured. - [ ] GCP resources provisioned and verified (Buckets, Gemini Enterprise Agent Platform APIs). - [ ] Sample catalog generated. - [ ] Smoke tests for image try-on succeed. - [ ] Catwalk video generation using Veo verified.