# Exstruct (MCP server)

> Exstruct is an MCP server that adds productivity tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Conversion from Excel to structured JSON (tables, shapes, charts) for LLM/RAG pipelines, and autonomous Excel reading/writing by AI agents via CLI… It has 201 GitHub stars, is released under the BSD-3-Clause license and runs locally with uvx exstruct.

ExStruct reads Excel workbooks into structured data and applies patch-based editing workflows through a shared core. It provides extraction APIs, a JSON-first editing CLI, and an MCP server for host-managed integrations, with options tuned for LLM/RAG preprocessing, reviewable edit flows, and local automation.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/harumiWeb/exstruct |
| GitHub stars | 201 |
| License | BSD-3-Clause |
| Language | Python |
| Transport | stdio |
| Packages | pypi: exstruct |
| Remote URL | none |
| Needs API key | no |
| Official | no |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Productivity |
| Latest release | v0.9.0 (Oct 4, 2026) |
| Last commit | Oct 4, 2026 |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "exstruct": {
      "command": "uvx",
      "args": [
        "exstruct"
      ]
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --transport stdio exstruct -- uvx exstruct
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "exstruct": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "exstruct"
      ]
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "servers": {
    "exstruct": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "exstruct"
      ]
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

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