io.github.dsbissett/excel-webview2-mcp

MCP server for Excel add-ins via WebView2 CDP

0 tools GitHub

No known CVEs

No license

Actively maintained

Last commit 1d ago

Untested

Transport: stdio

0 tools

Grade F

Productivity

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Untested on Claude Desktopstdio · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-github-dsbissett-excel-webview2-mcp": {
      "command": "<see-readme>",
      "args": []
    }
  }
}

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[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-dsbissett-excel-webview2-mcp)](https://mcppedia.org/s/io-github-dsbissett-excel-webview2-mcp)

Read me

What io.github.dsbissett/excel-webview2-mcp does

MCP server for Excel add-ins via WebView2 CDP

Test This Server

No automated test available for this server. Check the GitHub README for setup instructions.

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Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

20/100across 5 weighted dimensions

How we score →

0255075100

−80

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

No package registry to scan.

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Frequently Asked Questions

Is io.github.dsbissett/excel-webview2-mcp safe to use?: io.github.dsbissett/excel-webview2-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.github.dsbissett/excel-webview2-mcp?: io.github.dsbissett/excel-webview2-mcp can be installed by cloning its GitHub repository and following the setup instructions in the README.
What AI clients work with io.github.dsbissett/excel-webview2-mcp?: io.github.dsbissett/excel-webview2-mcp is compatible with Claude Desktop, Cursor, Claude Code, and most MCP clients that support stdio transport. It uses stdio transport.
Is io.github.dsbissett/excel-webview2-mcp actively maintained?: io.github.dsbissett/excel-webview2-mcp is actively maintained — last commit was 1 day ago.

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Excel WebView2 MCP

Professional MCP connectivity for Microsoft Excel add-ins running inside WebView2.

Item	Value
Package	`@dsbissett/excel-webview2-mcp`
Upstream	Fork of `ChromeDevTools/chrome-devtools-mcp`
Target runtime	Excel add-ins hosted in WebView2
Debug endpoint	`http://127.0.0.1:9222`
Recommended setup	Claude Code plugin marketplace

Item

Value

Package

@dsbissett/excel-webview2-mcp

Upstream

Fork of ChromeDevTools/chrome-devtools-mcp

Target runtime

Excel add-ins hosted in WebView2

Debug endpoint

http://127.0.0.1:9222

Recommended setup

Claude Code plugin marketplace

[!IMPORTANT] As of v0.0.2, this server can launch Excel and sideload your add-in for you. You no longer need to start the dev server or attach a debugger before using it — excel_launch_addin will start your local dev server (if configured) and launch Excel with WebView2 remote debugging enabled on port 9222. Manual pre-launch is still supported: if an Excel add-in is already running with remote debugging on 9222, the server will attach to it.

What's New in v0.0.2

Add-in lifecycle management — new tools launch and stop Excel add-ins directly from Claude Code:

excel_detect_addin — discover manifest and dev server configuration for the current project.
excel_launch_addin — start the dev server (if needed) and launch Excel with the add-in sideloaded and CDP port 9222 enabled.
excel_stop_addin — tear down the launched Excel session and dev server process tree.

Read-only Excel inspection tools — a broad set of read operations for inspecting workbooks, worksheets, ranges, tables, pivots, charts, and more. None of these mutate workbook state:

Context & structure: excel_context_info, excel_workbook_info, excel_list_worksheets, excel_worksheet_info, excel_active_range, excel_used_range.
Range reads: excel_read_range, excel_range_properties, excel_range_formulas, excel_range_special_cells, excel_find_in_range.
Formatting & validation: excel_list_conditional_formats, excel_list_data_validations.
Tables & names: excel_list_tables, excel_table_info, excel_table_rows, excel_table_filters, excel_list_named_items.
Comments & shapes: excel_list_comments, excel_list_shapes.
Calculation & pivots: excel_calculation_state, excel_list_pivot_tables, excel_pivot_table_info, excel_pivot_table_values.
Charts: excel_list_charts, excel_chart_info, excel_chart_image.
Misc: excel_custom_xml_parts, excel_settings_get.

Socket-based port detection replaces HTTP polling for more reliable dev-server and CDP readiness checks on Node 24.

Robust cleanup on Windows — excel_stop_addin now force-kills the dev server process tree via taskkill.

What This Project Does

Connects Claude Code to a locally running Excel add-in through the Chrome DevTools Protocol (CDP).

Exposes MCP tools for inspection, automation, screenshots, console access, network inspection, and performance analysis.

Targets the embedded WebView2 runtime used by Excel add-ins instead of a standalone Chrome session.

Frequently Asked Questions

Is io.github.dsbissett/excel-webview2-mcp safe to use?

io.github.dsbissett/excel-webview2-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install io.github.dsbissett/excel-webview2-mcp?

io.github.dsbissett/excel-webview2-mcp can be installed by cloning its GitHub repository and following the setup instructions in the README.

What AI clients work with io.github.dsbissett/excel-webview2-mcp?

io.github.dsbissett/excel-webview2-mcp is compatible with Claude Desktop, Cursor, Claude Code, and most MCP clients that support stdio transport. It uses stdio transport.

Is io.github.dsbissett/excel-webview2-mcp actively maintained?

io.github.dsbissett/excel-webview2-mcp is actively maintained — last commit was 1 day ago.

Excel WebView2 MCP

Professional MCP connectivity for Microsoft Excel add-ins running inside WebView2.

Item	Value
Package	`@dsbissett/excel-webview2-mcp`
Upstream	Fork of `ChromeDevTools/chrome-devtools-mcp`
Target runtime	Excel add-ins hosted in WebView2
Debug endpoint	`http://127.0.0.1:9222`
Recommended setup	Claude Code plugin marketplace

Item

Value

Package

@dsbissett/excel-webview2-mcp

Upstream

Fork of ChromeDevTools/chrome-devtools-mcp

Target runtime

Excel add-ins hosted in WebView2

Debug endpoint

http://127.0.0.1:9222

Recommended setup

Claude Code plugin marketplace

What's New in v0.0.2

Add-in lifecycle management — new tools launch and stop Excel add-ins directly from Claude Code:

excel_detect_addin — discover manifest and dev server configuration for the current project.
excel_launch_addin — start the dev server (if needed) and launch Excel with the add-in sideloaded and CDP port 9222 enabled.
excel_stop_addin — tear down the launched Excel session and dev server process tree.

Read-only Excel inspection tools — a broad set of read operations for inspecting workbooks, worksheets, ranges, tables, pivots, charts, and more. None of these mutate workbook state:

Context & structure: excel_context_info, excel_workbook_info, excel_list_worksheets, excel_worksheet_info, excel_active_range, excel_used_range.
Range reads: excel_read_range, excel_range_properties, excel_range_formulas, excel_range_special_cells, excel_find_in_range.
Formatting & validation: excel_list_conditional_formats, excel_list_data_validations.
Tables & names: excel_list_tables, excel_table_info, excel_table_rows, excel_table_filters, excel_list_named_items.
Comments & shapes: excel_list_comments, excel_list_shapes.
Calculation & pivots: excel_calculation_state, excel_list_pivot_tables, excel_pivot_table_info, excel_pivot_table_values.
Charts: excel_list_charts, excel_chart_info, excel_chart_image.
Misc: excel_custom_xml_parts, excel_settings_get.

Socket-based port detection replaces HTTP polling for more reliable dev-server and CDP readiness checks on Node 24.

Robust cleanup on Windows — excel_stop_addin now force-kills the dev server process tree via taskkill.

What This Project Does

Connects Claude Code to a locally running Excel add-in through the Chrome DevTools Protocol (CDP).

Exposes MCP tools for inspection, automation, screenshots, console access, network inspection, and performance analysis.

Targets the embedded WebView2 runtime used by Excel add-ins instead of a standalone Chrome session.

io.github.dsbissett/excel-webview2-mcp

Install in your client

What io.github.dsbissett/excel-webview2-mcp does

Test This Server

Why this score

20/100across 5 weighted dimensions

Security

Help improve this page

Reviews

Frequently Asked Questions

Similar servers

Discussion

io.github.dsbissett/excel-webview2-mcp

Install in your client

What io.github.dsbissett/excel-webview2-mcp does

Test This Server

Excel WebView2 MCP

What's New in v0.0.2

Fork Notice

What This Project Does

Connection Model

Prerequisites

Auto-launch (recommended, v0.0.2+)

Why this score

20/100across 5 weighted dimensions

Security

Help improve this page

Reviews

Frequently Asked Questions

Similar servers

Discussion

Excel WebView2 MCP

What's New in v0.0.2

Fork Notice

What This Project Does

Connection Model

Prerequisites

Auto-launch (recommended, v0.0.2+)