read_xlsx

Read content from a Microsoft Excel spreadsheet (.xlsx or .xls file). Returns the data as formatted text or JSON.

SERVERPromptX SOURCEdeepractice/promptx

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/deepractice-promptx/read-xlsx.md

WHAT IT DOES

What read_xlsx does on PromptX

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

RISK

Why read_xlsx is rated Low

This tool only retrieves and returns data from an Excel file in formatted text or JSON. It performs no modifications, deletions, or code execution. The blast radius of misuse is limited to potential exposure of data contained in the spreadsheet, which is a minimal security concern compared to other risk categories.

From the tool's definition The tool name is 'read_xlsx' and the description explicitly states it 'Read[s] content from a Microsoft Excel spreadsheet (.xlsx or .xls file).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs read_xlsx safely

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

read_xlsx Allowed

read_xlsx 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": {
    "read_xlsx": {}
  }
}

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

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

FAQ

Questions about read_xlsx

What does the read_xlsx tool do? +

Read content from a Microsoft Excel spreadsheet (.xlsx or .xls file). Returns the data as formatted text or JSON. It is categorised as a Read tool in the PromptX MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on read_xlsx? +

Register the PromptX MCP server in PolicyLayer and add a rule for read_xlsx: 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 PromptX. Nothing to install.

What risk level is read_xlsx? +

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

Can I rate-limit read_xlsx? +

Yes. Add a rate_limit block to the read_xlsx 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 read_xlsx completely? +

Set action: deny in the PolicyLayer policy for read_xlsx. 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 read_xlsx? +

read_xlsx is provided by the PromptX MCP server (deepractice/promptx). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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