YouCam Beauty Advisor

Recommend and preview makeup looks based on the user's face shape and skin tone, using YouCam (Perfect Corp) AI. Analyzes the selfie, suggests suitable looks, then renders a virtual makeup try-on image. Use for "推薦妝容", "幫我上妝", "makeup look", "virtual makeup". Do NOT use for skin-condition scoring, hair, or clothes.

Beauty Advisor

An analysis + generation skill: analyze face shape and skin tone, then recommend and preview a makeup look. Run the flow here through scripts/youcam_core.py.

When to trigger

When the user wants a makeup recommendation or a virtual try-on. For skin scores, hair, or clothes, hand off to the matching skill.

Ask first (this skill has multiple generation options) and state cost

Before generating, ask the user which they want, and tell them the credit cost of each option:

• Full look (preset template) — apply a curated full-face look (look-vto)
• Custom effects — specify individual items (lip color, eyeshadow, blush, …) (makeup-vto) Get costs with python scripts/youcam_core.py cost --feature look-vto and --feature makeup-vto (and --feature face-attr-analysis / --feature skin-tone-analysis for the analysis step), tell the user, and only run what they choose.

Get the latest API spec (do this every run)

Read the doc section(s) for the steps you will run and open the latest version for endpoints / parameters:

• Facial attributes: https://docs.perfectcorp.com/reference/ai_face_analyzer.md
• Skin tone: https://docs.perfectcorp.com/reference/ai_skin_tone_analysis.md
• Makeup try-on (custom): https://docs.perfectcorp.com/reference/makeup_vto.md
• Full look (template): https://docs.perfectcorp.com/reference/ai_look_vto.md

Prerequisites

1. A clear, front-facing selfie.
2. Run python scripts/youcam_core.py validate-key (0 credits) to confirm the key. If it is not set, tell the user to get one at https://yce.perfectcorp.com/api-console and set the YOUCAM_API_KEY env var, or create credentials.json in the skill root (see credentials.example.json for the format).

Flow

1. Analyze (as needed): face shape and eye/lip shape with python scripts/youcam_core.py run --feature face-attr-analysis --src_file <photo> --param features='["faceShape","faceAspectRatio","eyeShape","lipShape"]' (features is required and picks which attributes to measure), and run --feature skin-tone-analysis for colors.
   • The face shape comes back as faceshape: one of Triangle, Diamond, Heart, InvTriangle, Oblong, Oval, Round, Square, or Unknown; references/guide.md has advice for Round, Oblong, Square, and Heart.
   • If it is Unknown, don't guess a shape. face_aspect_ratio comes back as [1, r] (ideal 1 : 1.46): r above about 1.6 means a long face, below about 1.3 a short/wide one. Use it only for that long-vs-wide advice, and keep the rest general.
2. Recommend: use references/guide.md to pick a look/colors from face shape + skin tone.
3. Preview (the option the user chose):
   • Full look: list the looks with python scripts/youcam_core.py templates --feature look-vto (0 credits; each has an id, title, and thumb image; pass --starting_token <next_token> for the next page), let the user pick one, then run --feature look-vto --src_file <photo> --param template_id=<id>
   • Custom: run --feature makeup-vto --src_file <photo> --param effects='[{...}]' (each effects item is one category; see the doc's category schema and pattern catalogs)
4. The generation returns a result image URL in data.results.url.
5. If run prints "task_status": "running", the task is still processing and run stopped waiting. Do not run it again, since that starts a new task and charges again. Check back with python scripts/youcam_core.py status --feature <feature> --task_id <task_id>, using the task_id from that output, until task_status is success or error. A task_id stays valid for 24 hours.

Output rules

• Return the result image URL exactly as given (you may make it a hyperlink, but do not modify or shorten it).
• Explain the recommendation (why this look suits their face shape / skin tone).
• Always end with this note: "This preview image is AI-generated and for reference only; actual makeup results may vary by product, skin, and lighting."