---

name: hxxra description: A Research Assistant workflow skill with four core commands: search papers, download PDFs, analyze content, and save to Zotero. Entry point is a Python script located at scripts/hxxra.py and invoked via stdin/stdout (OpenClaw integration). The search uses crawlers for Google Scholar and arXiv APIs; download uses Python requests or arXiv API; analyze uses an LLM; save uses Zotero API.

hxxra

This skill is a Research Assistant that helps users search, download, analyze, and save research papers.

Core Commands

1. hxxra search - Search for research papers

Dependencies: pip install scholarly

Purpose: Search for papers using Google Scholar and arXiv APIs

Parameters:

• -q, --query <string> (Required): Search keywords
• -s, --source <string> (Optional): Data source: arxiv (default), scholar
• -l, --limit <number> (Optional): Number of results (default: 10)
• -o, --output <path> (Optional): JSON output file (default: search_results.json)

Input Examples:

{"command": "search", "query": "neural radiance fields", "source": "arxiv", "limit": 10, "output": "results.json"} | python scripts/hxxra.py
{"command": "search", "query": "transformer architecture", "source": "scholar", "limit": 15} | python scripts/hxxra.py

Output Structure:

{
  "ok": true,
  "command": "search",
  "query": "<query>",
  "source": "<source>",
  "results": [
    {
      "id": "1",
      "title": "Paper Title",
      "authors": ["Author1", "Author2"],
      "year": "2023",
      "source": "arxiv",
      "abstract": "Abstract text...",
      "url": "https://arxiv.org/abs/xxxx.xxxxx",
      "pdf_url": "https://arxiv.org/pdf/xxxx.xxxxx.pdf",
      "citations": 123
    }
  ],
  "total": 10,
  "output_file": "/path/to/results.json"
}

---

2. hxxra download - Download PDF files

Purpose: Download PDFs for specified papers

Parameters:

• -f, --from-file <path> (Required): JSON file with search results
• -i, --ids <list> (Optional): Paper IDs (comma-separated or range)
• -d, --dir <path> (Optional): Download directory (default: ./papers)

Input Examples:

{"command": "download", "from-file": "results.json", "ids": [1, 3, 5], "dir": "./downloads"} | python scripts/hxxra.py
{"command": "download", "from-file": "results.json", "dir": "./downloads"} | python scripts/hxxra.py

Output Structure:

{
  "ok": true,
  "command": "download",
  "downloaded": [
    {
      "id": "1",
      "title": "Paper Title",
      "status": "success",
      "pdf_path": "/path/to/downloads/Smith_2023_Title.pdf",
      "size_bytes": 1234567,
      "url": "https://arxiv.org/pdf/xxxx.xxxxx.pdf"
    }
  ],
  "failed": [],
  "total": 3,
  "successful": 3,
  "download_dir": "/path/to/downloads"
}

---

3. hxxra analyze - Analyze PDF content

Dependencies: pip install pymupdf pdfplumber openai

Purpose: Analyze paper content using LLM Parameters:

• -p, --pdf <path> (Optional*): Single PDF file to analyze
• -d, --directory <path> (Optional*): Directory with multiple PDFs
• -o, --output <path> (Optional): Output directory (default: ./analysis)

** Note: Either --pdf or --directory must be provided, but not both*

Input Examples:

{"command": "analyze", "pdf": "paper.pdf", "output": "analysis.json"} | python scripts/hxxra.py
{"command": "analyze", "directory": "./papers/"} | python scripts/hxxra.py

Output Structure:

{
  "ok": true,
  "command": "analyze",
  "analyzed": [
    {
      "id": "paper_1",
      "original_file": "paper.pdf",
      "analysis_file": "/path/to/analysis/paper_analysis.json",
      "metadata": {
        "title": "Paper Title",
        "authors": ["Author1", "Author2"],
        "year": "2023",
        "abstract": "Abstract text..."
      },
      "analysis": {
        "background": "Problem background...",
        "methodology": "Proposed method...",
        "results": "Experimental results...",
        "conclusions": "Conclusions..."
      },
      "status": "success"
    }
  ],
  "summary": {
    "total": 1,
    "successful": 1,
    "failed": 0
  }
}

---

4. hxxra save - Save to Zotero

Purpose: Save papers to Zotero collection

Parameters:

• -f, --from-file <path> (Required): JSON file with paper data
• -i, --ids <list> (Optional): Paper IDs to save
• -c, --collection <string> (Required): Zotero collection name

Input Examples:

{"command": "save", "from-file": "analysis.json", "ids": [1, 2, 3], "collection": "AI Research"} | python scripts/hxxra.py
{"command": "save", "from-file": "analysis.json", "collection": "My Collection"} | python scripts/hxxra.py

Output Structure:

{
  "ok": true,
  "command": "save",
  "collection": "AI Research",
  "saved_items": [
    {
      "id": "1",
      "title": "Paper Title",
      "zotero_key": "ABCD1234",
      "url": "https://www.zotero.org/items/ABCD1234",
      "status": "success"
    }
  ],
  "failed_items": [],
  "total": 3,
  "successful": 3,
  "zotero_collection": "ABCD5678"
}

---

Workflow Examples

Complete Workflow

# 1. Search for papers
{"command": "search", "query": "graph neural networks", "source": "arxiv", "limit": 10} | python scripts/hxxra.py

# 2. Download first 5 papers
{"command": "download", "from-file": "search_results.json"} | python scripts/hxxra.py

# 3. Analyze downloaded papers
{"command": "analyze", "directory": "./papers/"} | python scripts/hxxra.py

# 4. Save to Zotero
{"command": "save", "from-file": "./analysis/", "collection": "GNN Papers"} | python scripts/hxxra.py

Single Command Examples

# Search with scholar
{"command": "search", "query": "reinforcement learning", "source": "scholar", "limit": 15} | python scripts/hxxra.py

# Download specific papers
{"command": "download", "from-file": "search_results.json", "ids": [2, 4, 6]} | python scripts/hxxra.py

# Analyze single PDF in detail
{"command": "analyze", "pdf": "important_paper.pdf"} | python scripts/hxxra.py

# Save with custom notes
{"command": "save", "from-file": "search_results.json", "ids": [1], "collection": "To Read"} | python scripts/hxxra.py

Configuration Requirements

API Credentials(config.json)

1. arXiv API: No key required for basic access

2. Google Scholar: May require authentication for large queries

3. Zotero API: Required credentials:

   {
     "api_key": "YOUR_ZOTERO_API_KEY", # Create at https://www.zotero.org/settings/keys/new
     "user_id": "YOUR_ZOTERO_USER_ID", # Found on the same page (numeric, not username)
     "library_type": "user"  # or "group"
   }
   

4. LLM API: OpenAI or compatible API key for analysis

Notes

• All commands are executed via stdin/stdout JSON communication
• Error handling returns {"ok": false, "error": "Error message"}
• Large operations support progress reporting via intermediate messages
• Configuration is loaded from config.json or environment variables
• Concurrent operations have configurable limits to avoid rate limiting

Error Handling

Each command returns standard error format:

{
  "ok": false,
  "command": "<command>",
  "error": "Error description",
  "error_code": "ERROR_TYPE",
  "suggestion": "How to fix it"
}

Development Status

version: v1

• ✅ Command structure defined
• ✅ Parameter validation implemented
• ✅ arXiv integration in progress
• ✅ Google Scholar integration using scholarly library
• ✅ Zotero API integration
• ✅ LLM analysis pipeline using pymupdf pdfplumber and OpenAI API