Paper Lantern MCP Server Connects Claude Code to Research Papers

What Paper Lantern Does

Paper Lantern is an MCP server that connects Claude Code (and potentially other coding agents) to research literature. Instead of relying on its training data or web searches that return blogs and Stack Overflow results, Claude Code can now search actual published papers for benchmarked methods.

Key Details from the Source

The developer built Paper Lantern entirely using Claude Code as their "entire engineering team," working as a solo founder through Claude Code sessions.

Technical Implementation:

• Embedding pipeline uses Qwen3-Embedding on AWS g5 instances
• USearch HNSW index for vector search
• LMDB cache for the 2M+ CS papers
• FastAPI MCP server with multi-query generation and synthesis capabilities
• Elasticsearch BM25 indexing across the full corpus
• AWS ALB routing for api/mcp subdomains

Practical Example: When asked to "implement chunking for my RAG pipeline," without Paper Lantern, Claude Code picks a standard chunking approach from its training data. With Paper Lantern, it finds 4 papers from the current month, including one showing 0.93 faithfulness vs 0.78 for the standard method, and another cutting tokens by 76% while improving quality. The system synthesizes across pipeline stages and provides implementation-ready guidance.

Access: The tool is free to try with no paid tier at code.paperlantern.ai