csv_select_rows

Select rows from a local CSV using deterministic filters. Returns bounded results (selected columns + matching rows). No network.

SERVERNodebench SOURCEnodebench-mcp

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/io-github-homenshum-nodebench/csv-select-rows.md

WHAT IT DOES

What csv_select_rows does on Nodebench

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

RISK

Why csv_select_rows is rated Low

This tool only reads and filters data from a local CSV file. It has no side effects, does not modify data, and explicitly states no network access. Pure read operation with minimal blast radius.

From the tool's definition 'Select rows from a local CSV using deterministic filters. Returns bounded results (selected columns + matching rows). No network.'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs csv_select_rows safely

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

csv_select_rows Allowed

csv_select_rows 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": {
    "csv_select_rows": {}
  }
}

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

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

FAQ

Questions about csv_select_rows

What does the csv_select_rows tool do? +

Select rows from a local CSV using deterministic filters. Returns bounded results (selected columns + matching rows). No network. It is categorised as a Read tool in the Nodebench MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on csv_select_rows? +

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

What risk level is csv_select_rows? +

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

Can I rate-limit csv_select_rows? +

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

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

csv_select_rows is provided by the Nodebench MCP server (nodebench-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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