voc-amazon-reviews
Fetches and analyzes Amazon product reviews via ASIN across 10 markets (US, CA, MX, GB, DE, FR, IT, ES, JP, AU) using the Shulex VOC OpenAPI data layer, providing sentiment analysis, pain points, and listing improvements.
Accepts eBay review CSV/Excel files for analysis, using fuzzy column detection to handle varying formats and generating the same VOC report and dashboard.
Accepts Helium 10 CSV/Excel exports for analysis, using fuzzy column detection to handle varying formats and generating the same VOC report and dashboard.
Accepts Shopify review CSV/Excel files for analysis, using fuzzy column detection to handle varying formats and generating the same VOC report and dashboard.
TL;DR
Two inputs, six tools, three outputs.
┌─────────────┐ ┌──────────────┐
│ ASIN │──┐ ┌─│ Markdown │
└─────────────┘ │ ┌─────────────────────────┐ │ │ report │
├──────▶ 6 agent-callable tools ├──────┤ ├──────────────┤
┌─────────────┐ │ └─────────────────────────┘ │ │ Structured │
│ CSV / XLSX │──┘ fetch_reviews analyze_csv │ │ JSON │
└─────────────┘ analyze_reviews voc_full │ ├──────────────┤
extract_listing_improvements └─│ Black-gold │
render_dashboard │ HTML deck │
└──────────────┘Inputs — Amazon ASIN (auto-fetched via Shulex VOC OpenAPI, 10 markets) or any review CSV / Excel (Helium 10 / eBay / Shopify / custom — fuzzy column detection)
Outputs — Markdown report · structured JSON · standalone HTML dashboard
Surface — MCP server (works in Claude Code / Cursor / Cline / Continue) and Skill (works in Claude Code)
Quick start
Option A — As an MCP server (recommended)
# 1. Get a free Shulex VOC API key (starter credits free)
# https://apps.voc.ai/openapi
export VOC_API_KEY="your-key"
export ANTHROPIC_API_KEY="sk-ant-..." # only needed for extract_listing_improvements
# 2. Install
git clone https://github.com/mguozhen/voc-amazon-reviews
cd voc-amazon-reviews
pip install -r mcp_server/requirements.txt
# 3. Register with your agent (one line)
claude mcp add review-analyzer -- python -m mcp_server.serverNow ask any Claude Code / Cursor / Cline session:
Run a VOC report on
B08N5WRWNW, render the dashboard, and write it to~/Desktop/voc.html.
The agent will call voc_full → render_dashboard and hand you the file.
Option B — One-shot CLI
bash voc.sh B08N5WRWNW --limit 100 --market USOption C — Bring your own reviews (CSV)
# Drop in any reviews CSV (Helium 10 export, eBay scrape, Shopify, custom)
python -c "from mcp_server.tools import analyze_csv, render_dashboard; \
r = analyze_csv('reviews.csv', product_name='My Product'); \
render_dashboard(r, output_path='dashboard.html')"Tools
# | Tool | Input | Use when |
1 |
| ASIN | You want raw reviews; you'll analyze them yourself |
2 |
| reviews JSON | You already have reviews and want the VOC report |
3 |
| ASIN | Default "give me a VOC report" — fetch + analyze in one call |
4 |
| ASIN | ★ Differentiator — copy-ready title / 5 bullets / description grounded in customer language |
5 |
| CSV / Excel path or URL | The product is NOT on Amazon, or you have your own scrape |
6 |
| VOC report | Generate a standalone black-gold HTML dashboard, no external deps |
All 6 tools speak MCP. All return JSON-serializable dicts. Full schemas in mcp_server/README.md.
Data layer — why this is the moat
Most "AI review tools" are a thin LLM wrapper over a brittle scraper. We invert that. The data layer is the moat:
Typical seller-tool data layer | review-analyzer | |
Source | Web scraper / undocumented scrape API | Paid Shulex VOC OpenAPI |
Reliability | Breaks when Amazon updates HTML | API-grade, no DOM dependencies |
Markets | US-only or 2-3 markets | 10: US, CA, MX, GB, DE, FR, IT, ES, JP, AU |
Volume | 10–50 reviews (free-tier cap) | Up to 1,000 reviews per ASIN |
Freshness | Daily snapshots, sometimes cached for days | Live pull |
Schema | Strings only | Full: verified-purchase, helpful votes, vine, variant, dates |
Non-English markets | Often broken / omitted | Native captures + AI translation |
Access | Locked behind a UI | curl + JSON, fully scriptable, MCP-ready |
For non-Amazon platforms, analyze_csv accepts any review file — fuzzy column matching detects 内容 / 评价 / body / review / content so you don't have to reformat. Bring data from anywhere, get the same VOC report.
vs. the alternatives
review-analyzer | Helium 10 / Data Dive | review-analyzer-skill (Buluu) | Generic review scrapers | |
Input | ASIN or CSV | ASIN (manual UI) | CSV only | URL |
Markets | 10 | 1-3 | depends on user's data | 1 |
Output | JSON + Markdown + HTML dashboard | UI dashboard (locked) | CSV + MD + HTML dashboard | Raw CSV |
MCP-callable | ✅ | ❌ | ❌ Claude Code only | ❌ |
Listing copy gen | ✅ | Keyword research only | ❌ | ❌ |
Cost | Shulex API + Anthropic API ($0.05-0.20/listing) | $99-249/month subscription | Free (uses your Claude quota) | Free, brittle |
Open source | ✅ MIT | ❌ | ✅ MIT | varies |
Credit & inspiration: The 22-dimension tag system, fuzzy CSV column detection, and black-gold dashboard aesthetic were inspired by buluslan/review-analyzer-skill (MIT). We adapted them onto an MCP-native architecture with the Shulex VOC OpenAPI data layer.
Architecture
mcp_server/
├── server.py # 6 @mcp.tool decorators
├── tools.py # implementations (subprocess wrappers + Anthropic SDK)
├── csv_loader.py # fuzzy column detection for CSV/Excel input
├── dashboard.py # HTML rendering
├── dashboard_template.html # black-gold template (placeholders)
├── tag_system.yaml # 22-dim tag schema (customizable per category)
├── schemas.py # pydantic structured-output models
└── tests/ # 36 unit tests (subprocess + Anthropic mocked)
fetch.sh / analyze.sh / voc.sh # shell pipeline behind tools 1-3fetch + analyze loop: shell scripts (proven, reproducible, easy to debug)
listing rewrites: Anthropic SDK direct (
claude-opus-4-7+ adaptive thinking + prompt caching on the system rubric)dashboard: pure stdlib HTML rendering, no node / no react
Distribution / where to find us
Channel | Status |
✅ Open | |
✅ Open | |
🟢 Auto-indexed via GitHub topics | |
🟢 Auto-pull | |
mcp.so / PulseMCP | 🟡 Pending (manual form submit) |
Official MCP Registry | 🟡 Pending PyPI publish (W2) |
Roadmap
Drop in CSV / Excel (any platform, fuzzy column detect)
22-dimension tag system (YAML-configurable)
Black-gold HTML dashboard tool
6 MCP tools shipped
npx skills add mguozhen/review-analyzerone-line installCLI subprocess engine option (use your Claude subscription, $0 API)
PyPI publish + official MCP Registry submission
Smithery / mcp.so / PulseMCP form submissions
License
MIT. See LICENSE.
Acknowledgments: Tag schema, CSV column detection, and dashboard visual design inspired by buluslan/review-analyzer-skill. Data layer powered by Shulex VOC OpenAPI.
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