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excel-mcp

Excel MCP Server skill for Windows workbook automation. Use when an assistant needs rich MCP tools to create, inspect, modify, format, or analyze Excel files. Supports Power Query (M), Data Model/DAX, PivotTables, Tables, Ranges, Charts, Slicers, formatting, screenshots, VBA macros, connections, and calculation mode. Triggers: Excel, spreadsheet, workbook, xlsx, xlsm, Power Query, DAX, PivotTable, chart, dashboard, VBA, MCP.

75

Quality

92%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

85%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A dense, well-structured skill body that pairs concrete tool/action guidance with clear sequenced workflows and a clean one-level-deep reference layout. The main weakness is mild verbosity and some redundant explanatory prose that could be trimmed for token efficiency.

Suggestions

Tighten Rule 2 and Rule 3 prose — the workflow snippets already convey the behavior, so the surrounding justification can be condensed.

Consolidate overlapping guidance between the top Workflow Checklist and the per-rule numbered steps to avoid restating the same open/write/format/save sequence twice.

Reference the existing claude-desktop.md from the body (or note it as optional) so all bundle files are discoverable, since it is present but currently unreferenced.

DimensionReasoningScore

Conciseness

The body is well-organized with lean tables and concrete commands, but ~180 lines of overview content includes some redundant prose (e.g., restating that silent tool-call-only responses are incomplete, repeating the format workflow) that could be tightened.

2 / 3

Actionability

Concrete tool names, specific actions (e.g., `table(action: 'add-to-datamodel')`), exact format codes like `$#,##0.00`, and copy-paste-ready workflow snippets make the guidance fully executable.

3 / 3

Workflow Clarity

A numbered Workflow Checklist and per-rule sequenced steps give an explicit order, with validation/feedback loops such as the Power Query 'evaluate first' loop (Rule 7) and following suggestedNextActions (Rule 9).

3 / 3

Progressive Disclosure

SKILL.md is a clear overview with a well-signaled Reference Documentation section linking one level deep; all 20 referenced files exist in references/ and are organized for easy navigation.

3 / 3

Total

11

/

12

Passed

Description

100%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, third-person description that concisely states concrete capabilities and provides explicit 'Use when'-style trigger terms covering many natural user phrasings. It is well-distinguished and unlikely to trigger for the wrong skill.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — 'create, inspect, modify, format, or analyze Excel files' plus Power Query (M), Data Model/DAX, PivotTables, Tables, Ranges, Charts, Slicers — matching the 'lists multiple specific concrete actions' anchor.

3 / 3

Completeness

It explicitly answers both 'what' (rich MCP tools to create, inspect, modify, format, or analyze Excel files) and 'when' via the explicit trigger clause, matching the 'clearly answers both what AND when' anchor.

3 / 3

Trigger Term Quality

The 'Triggers: Excel, spreadsheet, workbook, xlsx, xlsm, Power Query, DAX, PivotTable, chart, dashboard, VBA, MCP' line gives broad coverage of natural terms a user would actually say.

3 / 3

Distinctiveness Conflict Risk

It carves a clear niche — Windows Excel MCP Server automation — with distinct triggers unlikely to collide with other skills, matching the 'clear niche with distinct triggers' anchor.

3 / 3

Total

12

/

12

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
sbroenne/mcp-server-excel
Reviewed

Table of Contents

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