Count lines, words, and characters in a text file
AI agents call count_lines_in_file to retrieve information from Mcp Windows without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and counts data from a file without side effects. It performs a query operation (counting lines, words, characters) on file content, which is purely informational and poses minimal risk of misuse by an AI agent.
From the tool's definition Tool name 'count_lines_in_file' and description 'Count lines, words, and characters in a text file' indicate read-only file analysis with no modification, deletion, or code execution.
Documented attack patterns abuse exactly the kind of access count_lines_in_file gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Windows, and nothing reaches the server without passing your rules. This is the rule we recommend for count_lines_in_file:
{
"version": "1",
"default": "deny",
"tools": {
"count_lines_in_file": {}
}
}count_lines_in_file is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Count lines, words, and characters in a text file. It is categorised as a Read tool in the Mcp Windows MCP Server, which means it retrieves data without modifying state.
Register the Mcp Windows MCP server in PolicyLayer and add a rule for count_lines_in_file: 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 Mcp Windows. Nothing to install.
count_lines_in_file is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the count_lines_in_file 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.
Set action: deny in the PolicyLayer policy for count_lines_in_file. 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.
count_lines_in_file is provided by the Mcp Windows MCP server (mukul975/mcp-windows-automation). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 441 Mcp Windows tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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441 Mcp Windows tools catalogued and risk-classified — across an index of 42,500+ MCP servers.