MCP Parser Generator

Automatic generator of priceParseData() functions for hotel booking engines using Claude + Playwright MCP.

🚀 Main Commands

# Generate parser for engines. 
npm run generate

# View execution logs
npm run logs

# View saved parsers
npm run parser-viewer list
npm run parser-viewer stats
npm run parser-viewer show H10

📁 Parsers Directory

Generated priceParseData() functions are automatically saved in:

/parsers/
  /H10/
    - H10_2025-08-04_12-32-01.js  (function with timestamp)
    - H10_latest.js               (latest version)
  /roiback/
    - roiback_2025-08-04_11-29-10.js
    - roiback_latest.js
  /omnibees/
    - omnibees_latest.js
    ...

Each file includes:

• ✅ Complete priceParseData() function
• ✅ Metadata (engine, URL, date, model used)

🎯 Features

• Automatic generation of parsers
• Automatic saving of generated functions
• Complete logging with sessions per engine
• MCP integration for automation with Playwright

🧰 CLI tool for generating parsers (Quickstart)

Prerequisites:

• Environment variable ANTHROPIC_API_KEY
• MCP server URL via env MCP_SERVER_URL (or pass --server flag)

Basic usage:

# Interactive mode (prompts for engine and URL)
npm run generate

# Non-interactive mode (flags)
npm run generate -- --engine synxis --url "https://..."

# Override server and/or model via flags (server is required if not in env)
npm run generate -- --engine synxis --url "https://..." \
  --server "https://playwright-mcp.thehotelsnetwork.com" \
  --model "claude-..." \
  --max-tokens 3000

Output:

• The CLI automatically saves the function under parsers/<engine>/<engine>_<timestamp>.js and parsers/<engine>/<engine>_latest.js.
• To view the latest content:

npm run parser-viewer show synxis

📖 CLI Help

npm run generate -- --help

It shows:

MCP Parser Generator - CLI
Usage:
  npm run generate -- [options]

Options:
  --engine <name>       Engine name (e.g., synxis, roiback)
  --url <url>           Target booking URL to analyze
  --server <url>        MCP server URL (fallback: $MCP_SERVER_URL)
  --model <id>          Anthropic model override (default is defined in code)
  --max-tokens <num>    Max tokens for model output (default: 2000)
  -h, --help            Show this help and exit

Environment:
  ANTHROPIC_API_KEY     Required. Your Anthropic API key
  MCP_SERVER_URL        MCP server URL (required unless provided via --server)

Examples:
  npm run generate                      # Interactive mode
  npm run generate -- --engine synxis --url "https://..."
  npm run generate -- --engine synxis --url "https://..." --server "https://playwright-mcp..." --model "claude-..." --max-tokens 3000

Related tools:
  npm run logs latest                   # Show latest log
  npm run parser-viewer list            # List saved parsers

🔎 Logs

During generation you will see logs in the console (and they are saved in logs/). Helpful commands:

npm run logs list
npm run logs latest
npm run logs show <filename>

❓ Troubleshooting

• Error: ANTHROPIC_API_KEY is not set
  • Export the environment variable with your API Key.
• MCP connection error or service unavailable
  • Verify MCP_SERVER_URL or use --server to point to the correct server.
  • Check npm run logs latest for more details.
• No file generated under parsers/
  • Ensure the model returns content and the priceParseData() function is extracted.

Table of contents

• Setup Environment
• Best practices
• Logging
• Parser Viewer