PDD Shopping

MCP server for Claude Code that enables searching, normalizing, and signal-analyzing products on Pinduoduo (拼多多).

What it does

Write in Claude Code:

"Find Ray-Ban Meta smart glasses on Pinduoduo. Compare options and warn me about fake risk."

Claude uses these MCP tools to fetch structured product data with pre-computed fraud signals, then does its own reasoning and recommendations.

Data Sources

Provider	Status	Notes
mock	✅ Always works	Dev/testing. Three Ray-Ban Meta scenarios (replica, suspicious, potentially genuine).
h5	⚠️ Requires login cookies	Playwright scraping of mobile.yangkeduo.com. Requires PDD_H5_COOKIES_JSON.
official	🔲 Skeleton	PDD Open Platform / DDK API. Set PDD_PROVIDER=official with credentials.

Important: All mobile.yangkeduo.com pages require login — there is no guest mode. The H5 adapter requires valid session cookies via PDD_H5_COOKIES_JSON. Without cookies it returns NEED_AUTH and falls back to mock data.

Note on H5 scraping: Scraping PDD may violate their Terms of Service. Use for personal research only.

Getting PDD Session Cookies

1. Log in to Pinduoduo in Chrome (or on your phone)
2. Open DevTools → Application → Cookies → mobile.yangkeduo.com
3. Copy cookies to a JSON array format
4. Set PDD_H5_COOKIES_JSON in your .env file

Cookie format:

[
  {"name": "PDDAccessToken", "value": "...", "domain": ".yangkeduo.com", "path": "/"},
  {"name": "api_uid", "value": "...", "domain": ".yangkeduo.com", "path": "/"}
]

Cookies expire — you may need to refresh them periodically.

Setup

git clone <repo>
cd pdd-shopping-mcp
npm install
npx playwright install chromium
cp .env.example .env
# Edit .env as needed (default is mock mode, no config required)

Run

# Development (mock mode — no config needed)
npm run dev

# Real H5 scraping (requires PDD_H5_COOKIES_JSON in .env)
PDD_PROVIDER=h5 npm run dev

# Tests
npm test

Claude Code Config

Add to ~/.claude/claude_desktop_config.json (or project .claude/mcporter.json):

{
  "mcpServers": {
    "pdd-shopping": {
      "command": "npx",
      "args": ["tsx", "/absolute/path/to/pdd-shopping-mcp/src/index.ts"],
      "env": {
        "PDD_PROVIDER": "h5",
        "CNY_RUB_RATE": "13.5",
        "CARGO_RATE_RUB_PER_KG": "600"
      }
    }
  }
}

Available Tools

Tool	Description
health_check	Check server and provider status
translate_query_to_chinese	Dictionary-based query translation helper
search_pdd_products	Search products, returns Product[] with signals
get_pdd_product_detail	Get full detail by goodsId or URL
compare_pdd_products	Sort by quality signals, generate Russian warnings list
estimate_cargo_cost	Calculate total cost including Russia cargo

Product Signals

Each Product has a signals field pre-computed before Claude sees the data:

Signal	Meaning
replicaKeywordsFound	Chinese replica keywords in title: 同款, 高仿, 复刻, 潮牌…
priceSuspiciouslyLow	Price below 15% of expected brand range
priceVsExpectedRatio	Ratio of actual to minimum expected price (0.05 = 5% = almost certainly fake)
brandMismatch	Price below 50% of brand minimum
hasBuyerPhotos	Whether buyers posted real photos
noShopInfo	Shop data completely absent

Claude uses these signals to reason about authenticity and risk.

Example Session

User: Find Ray-Ban Meta smart glasses on Pinduoduo. Compare and warn about fakes.

Claude calls: search_pdd_products("Ray-Ban Meta 智能眼镜")
Claude calls: compare_pdd_products([...results])

Analysis:
• 99 CNY — replicaKeywordsFound: ["同款","潮牌"], priceVsExpectedRatio: 0.07 → AVOID
• 399 CNY — priceSuspiciouslyLow: true, no buyer photos → RISKY  
• 1800 CNY — ratio: 1.2, but only 7 reviews → needs more verification

None are confirmed genuine. Real Ray-Ban Meta retails ~$299 USD (~2200+ CNY).

Environment Variables

Variable	Default	Description
PDD_PROVIDER	mock	h5, mock, or official
PDD_H5_COOKIES_JSON	—	JSON cookie array (required for h5 mode)
PLAYWRIGHT_HEADLESS	true	Set false to see browser
CNY_RUB_RATE	13.5	CNY to RUB exchange rate
CARGO_RATE_RUB_PER_KG	600	Cargo rate RUB/kg
CARGO_MIN_KG	0.3	Minimum billable weight kg
DEBUG	false	Include raw PDD data in Product output

Roadmap

• PDD Open Platform / DDK API integration
• Third-party API connectors (RapidAPI)
• Buyer review and image extraction
• Price history tracking
• Taobao / 1688 / Poizon adapters
• Telegram bot wrapper
• Image-based search
• Real cargo company calculator