analyze_unique_values

A read tool on the Excel MCP server.

SERVERExcel MCP Server SOURCEaifornorms/excelmcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/aifornorms-excelmcp/analyze-unique-values.md

WHAT IT DOES

What analyze_unique_values does on Excel MCP Server

AI agents call analyze_unique_values to retrieve information from Excel MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why analyze_unique_values is rated Low

This tool appears to retrieve and analyze the unique values present in an Excel column or dataset, which is a read operation with no side effects. It queries existing data without creating, modifying, deleting, or executing external operations.

From the tool's definition Tool name 'analyze_unique_values' combined with sibling tools like 'analyze_correlations', 'analyze_data_overview', and 'list_columns' indicates this is a data analysis/querying function.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs analyze_unique_values safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Excel MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For analyze_unique_values, this is the rule to start with:

analyze_unique_values Allowed

analyze_unique_values is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "analyze_unique_values": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Excel MCP Server, apply this rule, and every analyze_unique_values call is checked against it from then on.

FAQ

Questions about analyze_unique_values

What does the analyze_unique_values tool do? +

analyze_unique_values is a read tool on the Excel MCP Server MCP server. It is categorised as a Read tool in the Excel MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on analyze_unique_values? +

Register the Excel MCP Server MCP server in PolicyLayer and add a rule for analyze_unique_values: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Excel MCP Server. Nothing to install.

What risk level is analyze_unique_values? +

analyze_unique_values is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit analyze_unique_values? +

Yes. Add a rate_limit block to the analyze_unique_values rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block analyze_unique_values completely? +

Set action: deny in the PolicyLayer policy for analyze_unique_values. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides analyze_unique_values? +

analyze_unique_values is provided by the Excel MCP Server MCP server (aifornorms/excelmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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