grep_count

Count the number of matches for a pattern

SERVERGrep MCP Server SOURCE247arjun/mcp-grep

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/247arjun-mcp-grep/grep-count.md

WHAT IT DOES

What grep_count does on Grep MCP Server

AI agents call grep_count to retrieve information from Grep 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 grep_count is rated Low

This tool performs a retrieval and analysis operation on existing data (counting pattern matches) with no side effects, data modification, or destructive capability. It is purely informational and consistent with the grep utility's read-only nature.

From the tool's definition Tool name 'grep_count' and description 'Count the number of matches for a pattern' indicate a read-only operation that queries and counts text pattern occurrences without modifying any data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs grep_count safely

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

grep_count Allowed

grep_count 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": {
    "grep_count": {}
  }
}

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

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

FAQ

Questions about grep_count

What does the grep_count tool do? +

Count the number of matches for a pattern. It is categorised as a Read tool in the Grep MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on grep_count? +

Register the Grep MCP Server MCP server in PolicyLayer and add a rule for grep_count: 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 Grep MCP Server. Nothing to install.

What risk level is grep_count? +

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

Can I rate-limit grep_count? +

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

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

grep_count is provided by the Grep MCP Server MCP server (247arjun/mcp-grep). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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