Merge branch 'main' into feat/wikipedia-mcp-tool

Signed-off-by: Hovhannes Tamoyan <hovhannes.tamoyan@gmail.com>

Author: tamohannes

docs/agentic_inference/tool_calling.md

@@ -370,5 +370,6 @@ For vLLM, you may need to specify tool calling arguments:
 ### Built-in Tools
 
 - [`nemo_skills.mcp.servers.python_tool.PythonTool`](https://github.com/NVIDIA-NeMo/Skills/tree/main/nemo_skills/mcp/servers/python_tool.py) - Python code execution
+- [`nemo_skills.mcp.servers.arxiv_tool.ArxivSearchTool`](https://github.com/NVIDIA-NeMo/Skills/tree/main/nemo_skills/mcp/servers/arxiv_tool.py) - ArXiv paper search and retrieval (no API key required)
 - [`nemo_skills.mcp.servers.exa_tool.ExaTool`](https://github.com/NVIDIA-NeMo/Skills/tree/main/nemo_skills/mcp/servers/exa_tool.py) - Web search via Exa API
 - [`nemo_skills.mcp.servers.wikipedia_tool.WikipediaSearchTool`](https://github.com/NVIDIA-NeMo/Skills/tree/main/nemo_skills/mcp/servers/wikipedia_tool.py) - Direct Wikipedia article search and retrieval (no API key required)