Code Index MCP Server

What the code does

We read the source, 4 h ago · rules 3dff92dd89df

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

        proc = subprocess.run(

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Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add code-index -- uvx mcp-code-index

{
  "mcpServers": {
    "code-index": {
      "args": [
        "mcp-code-index"
      ],
      "command": "uvx"
    }
  }
}

[mcp_servers.code-index]
command = "uvx"
args = ["mcp-code-index"]

{
  "mcpServers": {
    "code-index": {
      "args": [
        "mcp-code-index"
      ],
      "command": "uvx"
    }
  }
}

{
  "mcpServers": {
    "code-index": {
      "args": [
        "mcp-code-index"
      ],
      "command": "uvx"
    }
  }
}

This one needs environment variables set before it will start: CODE_INDEX_EMBEDDER (Embedder backend. Only 'jina' (local jina-embeddings-v2-base-code via sentence-transformers) is supported; the variable exists for future expansion.), CODE_INDEX_EMBED_MODEL (HuggingFace model id. Defaults to 'jinaai/jina-embeddings-v2-base-code'. Override only if you know the model is dim-compatible.), CODE_INDEX_EMBED_DIM (Embedding dimension. Defaults to 768 (matches jina-embeddings-v2-base-code). Must match the model's output dim.), CODE_INDEX_DB (Path to the SQLite index database. Defaults to .claude/index.db relative to the working directory.), CODE_INDEX_EMBED_BATCH (Encode batch size (default 32). Lower (e.g. 8 or 4) to reduce peak memory if the GPU OOMs on large files.), CODE_INDEX_EMBED_DEVICE (Torch device override: 'cpu', 'mps', or 'cuda'. Unset = auto-detect. Set 'cpu' to avoid Apple-Silicon MPS out-of-memory errors.). The author declared them in the registry entry; get the values from the project itself.