What it does

Automates Excel workbooks: read ranges, write cells, run operations. The value is that the output is a real .xlsx with formulas, not a rendered table. The risk is that a wrong formula produces a plausible number nobody checks — verify totals against an independent calculation.

Install

Terminal

npx -y @sbroenne/mcp-server-excel

Client configuration

Paste this into your MCP client config (Claude Desktop, Cursor, or any client that reads mcpServers), then restart the client.

mcp.json

{
  "mcpServers": {
    "excel": {
      "command": "npx",
      "args": [
        "-y",
        "@sbroenne/mcp-server-excel"
      ]
    }
  }
}

Use it for

Reading and writing workbooks that a human will open in Excel afterwards

Skip it if

Financial models; formula errors in generated sheets are silent

When to use it

Reach for this when the task needs excel inside the agent loop. Skip it if a plain shell command or a one-off script is enough — every server you add costs context and adds a failure mode.

Other TypeScript servers

Filesystem — Gives an agent scoped read, write, and search access to directories you explicitly allow
Memory — A persistent knowledge graph stored in a local JSON file, exposed through entities, relations, and observations
Sequential Thinking — Gives the model a scratchpad for structured, revisable reasoning: numbered thoughts that can branch, revise, and conclude

Excel MCP