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Introduction

Valency Bond™ is a Model Context Protocol (MCP) server that connects AI assistants to preprints from arxiv, biorxiv, medrxiv, pubmed, and more. It allows Claude, the Gemini CLI, ChatGPT, and other MCP-compatible assistants to search, retrieve, and analyze research papers.

  1. You connect your AI assistant to Valency Bond using OAuth (sign in with Google or email)
  2. You ask questions like “Find papers about transformer architectures” or “Search for climate change research from 2024”
  3. Valency searches tens millions of papers and returns relevant results
  4. Your AI assistant analyzes and summarizes the findings
PlatformStatusAuth Method
Claude.ai✅ Supported (recommended)OAuth
Claude Desktop✅ SupportedOAuth
Claude Code CLI✅ SupportedOAuth
Gemini CLI✅ SupportedOAuth
ChatGPT✅ SupportedOAuth
Direct API✅ SupportedBearer token

Before you begin, you’ll need:

Ready to get started? Head to the Claude setup guide to connect your first platform.