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Claude Context

A semantic code search MCP server: indexes the project into a vector database and gives the agent only relevant snippets

MCP serverMedium risk

zilliztech/claude-contextAuthor: Zilliz

Install

claude mcp add claude-context \
  -e OPENAI_API_KEY=sk-your-openai-api-key \
  -e MILVUS_ADDRESS=your-zilliz-cloud-public-endpoint \
  -e MILVUS_TOKEN=your-zilliz-cloud-api-key \
  -- npx @zilliz/claude-context-mcp@latest

Requires Node.js 20+.

This is third-party code. Review the repository files before installing.

What it does

Claude Context splits project code into chunks, builds embeddings and stores them in Milvus or Zilliz Cloud. When the agent needs context, it runs a semantic query and gets relevant code without multi-step file searching. This saves tokens on large repositories. The server works with Claude Code, Codex, Gemini CLI, Cursor, Windsurf, Claude Desktop and other MCP clients.

Who it is for. For developers on large codebases where the agent struggles to find code with plain search.

Good fit when

  • The repository is too large for the agent to read in full
  • The agent spends many steps finding the right files
  • You need to search code by meaning rather than exact names

Not a fit when

  • The project is small and grep is enough
  • Code must not be sent to external embedding services

Example request

Index this repository and find where user authentication is handled

Limitations

It needs a vector database, Zilliz Cloud or your own Milvus, and an embedding provider key, OpenAI by default. The OpenAI API is not reachable from Russia without a VPN. Code chunks are sent to the embedding service and stored in the vector database. Node.js 20+ is required.

How to disable. Run claude mcp remove claude-context or delete the claude-context block from the client's MCP config.

MCP

Transport
stdio
Authentication
API key
Environment variables
OPENAI_API_KEY
required, secret		OpenAI key for the embedding model
MILVUS_ADDRESS
Milvus address or Zilliz Cloud public endpoint
MILVUS_TOKEN
required, secret		Zilliz Cloud API key or Milvus token

Security check

  • Reads the whole project codebase
  • Sends code chunks to an embedding service and vector database

README in short

The README explains why to index code in a vector database and lists requirements: Zilliz Cloud or Milvus and an OpenAI key. It gives the claude mcp add command and ready configs for about ten clients, including Codex, Gemini CLI, Qwen Code and Cursor. It also covers the VS Code extension and the core library. MIT licensed.

FAQ

Can I avoid Zilliz Cloud?

Yes, point MILVUS_ADDRESS at your own Milvus instance.

Is there more than MCP?

The repository also has a VS Code extension and the @zilliz/claude-context-core package.

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