Nexus-MCP code search server

Nexus-MCP is a helper that gives your AI assistant a smart way to look through your code. Instead of reading whole files, it finds the exact functions and classes you care about. It is handy for developers who use AI to write or review code and want faster, cheaper answers.

What this MCP server does

You ask your AI a question about your code, like where a function is used. The AI sends that question to Nexus-MCP. Nexus-MCP looks through an index of your code using three methods: meaning-based search, keyword search, and a map of how pieces connect. It sends back the most relevant pieces, and your AI explains them to you. It can also remember notes across sessions.

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What you can do with it

• Search your codebase by meaning, not just exact words
• Explain what a function or class does without reading the whole file
• Show which files and modules make up your project
• Find where a symbol is defined
• Analyze code quality like complexity and smells
• Store and recall notes or decisions across chats
• Check if your code index is up to date

Try asking your AI

• “Where is the login logic in this project?”
• “Explain what verify_credentials does.”
• “Show me the main modules and how they connect.”
• “Remember that we decided to use JWT for auth.”

What it gives back to you

You get back short, focused answers in the chat. For a search, you see a list of relevant code chunks with file names and line numbers. For an explain request, you get a summary of the symbol, its relationships, and quality metrics. Notes you store come back when you ask for them later.

Before you start

Who it's for

Developers and technical teams who use AI coding assistants and want faster, more accurate code understanding.