brightdata（brightdata 搜索）

Workflow Routing (SYSTEM PROMPT)

CRITICAL: This workflow implements progressive escalation for URL content retrieval.

When user requests scraping/fetching URL content: Examples: "scrape this URL", "fetch this page", "get content from [URL]", "pull content from this site", "retrieve [URL]", "can't access this site", "this site is blocking me", "use Bright Data to fetch" → READ: ${PAI_DIR}/skills/brightdata/workflows/four-tier-scrape.md → EXECUTE: Four-tier progressive scraping workflow (WebFetch → Curl → Browser Automation → Bright Data MCP)

When to Activate This Skill

Direct Scraping Requests (Categories 1-4)

• "scrape this URL", "scrape [URL]", "scrape this page"
• "fetch this URL", "fetch [URL]", "fetch this page", "fetch content from"
• "pull content from [URL]", "pull this page", "pull from this site"
• "get content from [URL]", "retrieve [URL]", "retrieve this page"
• "do scraping on [URL]", "run scraper on [URL]"
• "basic scrape", "quick scrape", "simple fetch"
• "comprehensive scrape", "deep scrape", "full content extraction"

Access & Bot Detection Issues (Categories 5-7)

• "can't access this site", "site is blocking me", "getting blocked"
• "bot detection", "CAPTCHA", "access denied", "403 error"
• "need to bypass bot detection", "get around blocking"
• "this URL won't load", "can't fetch this page"
• "use Bright Data", "use the scraper", "use advanced scraping"

Result-Oriented Requests (Category 8)

• "get me the content from [URL]"
• "extract text from [URL]"
• "download this page content"
• "convert [URL] to markdown"
• "need the HTML from this site"

Use Case Indicators

• User needs web content for research or analysis
• Standard methods (WebFetch) are failing
• Site has bot detection or rate limiting
• Need reliable content extraction
• Converting web pages to structured format (markdown)

Core Capabilities

Progressive Escalation Strategy:

1. Tier 1: WebFetch - Fast, simple, built-in Claude Code tool
2. Tier 2: Customized Curl - Chrome-like browser headers to bypass basic bot detection
3. Tier 3: Browser Automation - Full browser automation using Playwright for JavaScript-heavy sites
4. Tier 4: Bright Data MCP - Professional scraping service that handles CAPTCHA and advanced bot detection

Key Features:

• Automatic fallback between tiers
• Preserves content in markdown format
• Handles bot detection and CAPTCHA
• Works with any URL
• Efficient resource usage (only escalates when needed)

Workflow Overview

four-tier-scrape.md - Complete URL content scraping with four-tier fallback strategy

• When to use: Any URL content retrieval request
• Process: Start with WebFetch → If fails, use curl with Chrome headers → If fails, use Browser Automation → If fails, use Bright Data MCP
• Output: URL content in markdown format

Extended Context

Integration Points:

• WebFetch Tool - Built-in Claude Code tool for basic URL fetching
• Bash Tool - For executing curl commands with custom headers
• Browser Automation - Playwright-based browser automation for JavaScript rendering
• Bright Data MCP - mcp__Brightdata__scrape_as_markdown for advanced scraping

When Each Tier Is Used:

• Tier 1 (WebFetch): Simple sites, public content, no bot detection
• Tier 2 (Curl): Sites with basic user-agent checking, simple bot detection
• Tier 3 (Browser Automation): Sites requiring JavaScript execution, dynamic content loading
• Tier 4 (Bright Data): Sites with CAPTCHA, advanced bot detection, residential proxy requirements

Configuration: No configuration required - all tools are available by default in Claude Code

Examples

Example 1: Simple Public Website

User: "Scrape https://example.com"

Skill Response:

1. Routes to three-tier-scrape.md
2. Attempts Tier 1 (WebFetch)
3. Success → Returns content in markdown
4. Total time: <5 seconds

Example 2: Site with JavaScript Requirements

User: "Can't access this site https://dynamic-site.com"

Skill Response:

1. Routes to four-tier-scrape.md
2. Attempts Tier 1 (WebFetch) → Fails (blocked)
3. Attempts Tier 2 (Curl with Chrome headers) → Fails (JavaScript required)
4. Attempts Tier 3 (Browser Automation) → Success
5. Returns content in markdown
6. Total time: ~15-20 seconds

Example 3: Site with Advanced Bot Detection

User: "Scrape https://protected-site.com"

Skill Response:

1. Routes to four-tier-scrape.md
2. Attempts Tier 1 (WebFetch) → Fails (blocked)
3. Attempts Tier 2 (Curl) → Fails (advanced detection)
4. Attempts Tier 3 (Browser Automation) → Fails (CAPTCHA)
5. Attempts Tier 4 (Bright Data MCP) → Success
6. Returns content in markdown
7. Total time: ~30-40 seconds

Example 4: Explicit Bright Data Request

User: "Use Bright Data to fetch https://difficult-site.com"

Skill Response:

1. Routes to four-tier-scrape.md
2. User explicitly requested Bright Data
3. Goes directly to Tier 4 (Bright Data MCP) → Success
4. Returns content in markdown
5. Total time: ~5-10 seconds

Related Documentation:

• ${PAI_DIR}/skills/CORE/SKILL-STRUCTURE-AND-ROUTING.md - Canonical structure guide
• ${PAI_DIR}/skills/CORE/CONSTITUTION.md - Overall Kai philosophy

Last Updated: 2025-11-23