excel-cli
Excel CLI automation skill for Windows workbooks. Use when a coding agent needs token-efficient, scriptable, or unattended Excel automation via excelcli commands. Best for CI/CD, scheduled jobs, batch processing, PowerShell workflows, and bulk workbook edits. Supports Power Query, DAX, PivotTables, Tables, Ranges, Charts, VBA, Data Models, screenshots, and formatting. Triggers: excelcli, Excel CLI, command line, batch, script, automation, CI/CD, scheduled, PowerShell, unattended, coding agent, workbook processing.
73
90%
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High
Do not use without reviewing
Security
1 high severity finding. You should review these findings carefully before considering using this skill.
W007: Insecure credential handling detected in skill instructions.
What this means
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
Why it was flagged
The skill instructs the agent to read the sessionId returned by commands (e.g., {"sessionId":"abc123"}) and then embed that exact session ID into subsequent CLI commands, which requires handling and outputting a potentially sensitive token verbatim and creates an exfiltration risk.
Low
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
W012: Unverifiable external dependency detected (runtime URL that controls agent).
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
The skill's runtime wrapper explicitly downloads and caches the Windows CLI runtime on first use (network access required) and the README points to the GitHub releases URL https://github.com/sbroenne/mcp-server-excel/releases/latest, indicating that remote code is fetched at runtime and executed.
- Repository
- sbroenne/mcp-server-excel
- Commit
d8521f4
- Audited
- Security analysis
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