onit-office

Standalone MCP server for Microsoft Office document creation (PowerPoint, Excel, Word). Runs as an SSE server that can be used with any MCP client.

Vendored from onit.

Installation

pip install onit-office

Related MCP server: pptx-mcp-server

Usage

Start the server (runs in background):

onit-office
# or
onit-office start

Start in foreground (for debugging):

onit-office start --foreground

Custom host/port:

onit-office start --host 127.0.0.1 --port 8000

Check status:

onit-office status

Stop the server:

onit-office stop

Using with onit

onit can connect to onit-office as an MCP SSE server. Start onit-office first, then launch onit with the --mcp-sse flag:

onit-office start
onit --mcp-sse http://localhost:18203/sse --web

This gives onit access to all 18 office document tools through its web interface.

MCP Client Configuration

Once running, connect any MCP client to the SSE endpoint:

http://localhost:18203/sse

Example MCP client config:

{
  "mcpServers": {
    "onit-office": {
      "url": "http://localhost:18203/sse"
    }
  }
}

Tools

18 tools for creating and editing Office documents:

PowerPoint (9 tools):

• create_presentation - Create a new 16:9 presentation with title slide

• add_slide - Add slides with various layouts (text, bullets, images, two-column)

• add_table_slide - Add data tables with formatted headers

• add_images_slide - Display multiple images in grid layouts

• style_slide - Apply background colors and styling

• get_presentation_info - Inspect presentation structure

• read_presentation - Read full text content from all slides

• modify_presentation - Edit text in shapes or delete slides

• download_media - Download media files from URLs

Excel (4 tools):

• create_excel - Create Excel files with headers and data

• add_excel_rows - Append rows to existing Excel files

• read_excel - Read cell contents from existing Excel files

• modify_excel_cells - Edit specific cells in existing Excel files

Word (4 tools):

• create_document - Create Word documents with optional headers/logos

• add_document_content - Add headings, paragraphs, bullets, images, tables

• read_document - Read full content from existing Word documents

• modify_document - Edit or delete paragraphs in existing Word documents

General (1 tool):

• get_file - Retrieve a created file as base64-encoded data for download

Data Directory

By default, created files are stored in a temporary directory unique to each server process (<system temp dir>/onit-office-<pid>, e.g. /tmp/onit-office-12345). This directory is automatically cleaned up when the server exits.

To persist files across restarts, specify a custom data path:

onit-office start --data-path /path/to/my/data

When --data-path is provided, auto-cleanup is disabled and files are retained.

Docker

See docs/DOCKER.md for Docker build and run instructions.

Testing

See docs/TESTING.md for how to run and structure tests.

License

Apache 2.0