
Claude Desktop
Desktop · Freemium · Proprietary
Anthropic's official Claude AI desktop application. Supports MCP servers to extend functionality.
Research & Data · Developer Tools

QuentinCody/catalysishub-mcp-server
A Model Context Protocol (MCP) server interface to Catalysis Hub's GraphQL API, enabling programmatic access to catalysis research data through flexible GraphQL queries.
{
"mcpServers": {
"server": {
"command": "/Users/quentincody/.env/bin/python3",
"args": [
"/Users/quentincody/catalysishub-mcp-server/catalysishub_mcp_server.py"
]
}
}
}Direct GraphQL Access: Execute any valid GraphQL query against Catalysis Hub's API
Comprehensive Data Access:
MCP Standard Compliance: Implements the Model Context Protocol for AI-agent interoperability
Flexible Query Support: Execute complex queries with variables parameterization
Error Handling: Robust error reporting for API connectivity and query execution
Details on this page are taken from the project's README. Open README
Clients mentioned in this server's README:

mendableai/firecrawl-mcp-server
A Model Context Protocol (MCP) server that brings Firecrawl to MCP-compatible AI agents — search, scrape, and interact with the live web for clean, agent-ready context.

exa-labs/exa-mcp-server
Connect AI agents to Exa for web search, content fetching, and multi-step research.

blazickjp/arxiv-mcp-server
A local MCP server for agent literature work. The differentiator is original-LaTeX section reads, BibTeX from arXiv metadata, and topic watches. Papers stay on disk.

lakehq/sail
Sail is a drop-in Apache Spark replacement written in Rust, unifying batch processing, stream processing, and compute-intensive AI workloads on a distributed, multimodal compute engine.
janwilmake/openapi-mcp-server
A Model Context Protocol (MCP) server for Claude/Cursor that enables searching and exploring OpenAPI specifications through oapis.org.

haris-musa/excel-mcp-server
A Model Context Protocol server that lets AI assistants create, read and edit Excel workbooks. It needs no Microsoft Excel installation.