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
92%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Advisory
Suggest reviewing before use
Quality
Discovery
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.
This is a strong skill description that clearly communicates its purpose, capabilities, and trigger conditions. It lists specific concrete actions and an extensive set of supported features, includes a comprehensive set of natural trigger terms, and explicitly states when to use it. The Windows and MCP specificity help distinguish it from other potential spreadsheet-related skills.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions ('create, inspect, modify, format, or analyze Excel files') and enumerates many specific capabilities (Power Query, DAX, PivotTables, Tables, Ranges, Charts, Slicers, formatting, screenshots, VBA macros, connections, calculation mode). | 3 / 3 |
Completeness | Clearly answers both 'what' (create, inspect, modify, format, analyze Excel files with specific feature support) and 'when' ('Use when an assistant needs rich MCP tools to create, inspect, modify, format, or analyze Excel files') with explicit trigger terms listed. | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural terms users would say: 'Excel', 'spreadsheet', 'workbook', 'xlsx', 'xlsm', 'Power Query', 'DAX', 'PivotTable', 'chart', 'dashboard', 'VBA', 'MCP'. These are terms users would naturally use when requesting Excel-related tasks. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive with its focus on Windows Excel workbook automation via MCP tools, specific mention of advanced features like Power Query/DAX/VBA, and the Windows platform constraint. The 'MCP Server' framing and extensive feature list make it clearly distinguishable from generic spreadsheet or data analysis skills. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
85%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a strong skill document that effectively balances breadth (227 tools) with navigability through good use of tables, numbered workflows, and progressive disclosure to reference files. Actionability is excellent with specific tool names, parameters, and concrete examples throughout. Minor conciseness issues exist with some redundancy between sections and slightly heavy-handed behavioral emphasis, but overall token efficiency is reasonable for the scope covered.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Generally efficient with good use of tables and code blocks, but some redundancy exists (e.g., Rule 5 session lifecycle repeats the workflow checklist, Rule 4 restates why tables matter, and some rules like 'NEVER ask clarifying questions' are behavioral instructions that could be more compact). The 'CRITICAL' and 'MUST FOLLOW' emphasis adds noise. | 2 / 3 |
Actionability | Highly actionable with specific tool names, action parameters, concrete format codes, step-by-step sequences, and even example error response JSON. Every rule provides exact tool calls and parameters rather than vague descriptions. | 3 / 3 |
Workflow Clarity | Multi-step workflows are clearly sequenced with numbered steps (calculation mode, Power Query lifecycle, Data Model prerequisites, session lifecycle). The Power Query section includes an explicit test-first validation loop, and the calculation mode workflow has a clear restore-default step. Error handling is addressed via Rule 9's suggestedNextActions pattern. | 3 / 3 |
Progressive Disclosure | Excellent structure with a concise overview covering key workflows and rules, followed by a well-organized reference section with 20+ clearly labeled one-level-deep links to specific topics. The SKILL.md serves as a navigable hub without inlining excessive detail. | 3 / 3 |
Total | 11 / 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.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- sbroenne/mcp-server-excel
- Commit
e8764a6
- Reviewed
Table of Contents
Is this your skill?
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.