MCP100 IndexMCP Server
WatchlistCommunity implementation

ExcelMcp

by Sbroenne

Reviewed October 5, 2026

MCP Server

Watchlist tracking

Reviewed for relevance and future tracking value.

MCP100 Assessment

Watchlist / Tracking

Why we’re tracking it

Track Office or spreadsheet integration and tool permission changes

Reviewed · Documentation review; complete setup workflow not independently tested

Best fit

Automating real Microsoft Excel workbooks with full Excel-engine fidelity

What we know

Windows MCP server that drives the real Excel COM engine for formulas, Power Query, DAX, VBA, PivotTables, charts and hundreds of workbook operations.

Maintenance / activity evidence

  • Observed (UTC)Work around Claude bridge session ID loss ( 1059)

Tracking evidence observed Oct 5, 2026. These dated signals do not establish current maintenance. Reviewed enrichment confidence: high.

Activity source · commits ↗Activity source · releases ↗

Verification gaps / watch-outs

  • Installation and comprehensive security have not been independently audited.
  • Operates with the current user's Excel/Windows file access. Writes: Write formulas/data; Create/delete workbook structures; Run VBA; Save files.
  • Authentication not yet verified.
  • Sensitive access: Workbook contents, Macros, Potential credentials embedded in workbooks
  • It can execute VBA and make broad workbook changes; work on backups for high-value spreadsheets.
Security source · repository notice ↗Security source · policy file ↗

Full authority, access and evidence limits are available in Review context and Access & risk.

Popularity

789 repository stars

Stars observed Sep 25, 2026.

Preserve any already-reviewed adoption metrics in MCP100. Batch 4 did not refresh package downloads because the package-stats provider had insufficient credits.

Preserve any already-reviewed adoption metrics in MCP100. Batch 4 did not refresh package downloads because the package-stats provider had insufficient credits.

All limitations / Review context

Which Excel operations and supported host versions are documented?

The bounded assessment reviewed the official README, repository notices, security policy path, and security page for known material public-tracking blockers. No such blocker was identified. This is a public-tracking assessment, not an installation safety certification.

  • It can execute VBA and make broad workbook changes; work on backups for high-value spreadsheets.
  • Operates with the current user's Excel/Windows file access.
  • Workbook data is processed locally through Excel COM; limited anonymous telemetry is documented.
  • Reviewed write actions: Write formulas/data; Create/delete workbook structures; Run VBA; Save files
  • Sensitive access: Workbook contents, Macros, Potential credentials embedded in workbooks
  • Installation, client compatibility and comprehensive security have not been independently audited. Authentication and access depend on the configured services.
  • No independent runtime, installation, or comprehensive security audit was performed.
  • No installation, runtime, client matrix, or complete tool-contract audit was performed in this review.
  • Windows + Excel 2016+ required.
  • VBA operations require a Trust Center setting enabled manually.
  • Excel files need exclusive access for some operations.

Original activity observations

  • 2026-10-05T17:57:09Z: Work around Claude bridge session ID loss ( 1059)
Technical identity
github.com/sbroenne/mcp-server-excel
Reviewed resource type
MCP Server
Repository identity
sbroenne/mcp-server-excel
Package identity
npm:@sbroenne/mcp-server-excel

Evidence & Sources

Evidence basis
Recorded source evidence
Setup runtime verification
Not independently runtime-tested by MCP100 for this setup workflow.

Reviewed · Latest source observation

  • GitHub repository ↗

    sbroenne/mcp-server-excel

    Recorded repository material and project history.

    Includes references whose attribution is not established.