util_arr_nth

Return the element at index

SERVERDelx MCP Server SOURCEdelx-mcp-server

Low RISK CLASS

Category Read

Parameters 22 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-davidmosiah-delx-mcp-server/util-arr-nth.md

WHAT IT DOES

What util_arr_nth does on Delx MCP Server

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

Parameter	Type	Required	Description
`index`	integer	Yes	Input field: index.
`items`	array	Yes	Input field: items.

Parameters from the server's own tool schema.

RISK

Why util_arr_nth is rated Low

Even though util_arr_nth only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs util_arr_nth safely

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

util_arr_nth Allowed

util_arr_nth 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": {
    "util_arr_nth": {}
  }
}

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

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

FAQ

Questions about util_arr_nth

What does the util_arr_nth tool do? +

Return the element at index. It is categorised as a Read tool in the Delx MCP Server MCP Server, which means it retrieves data without modifying state.

What parameters does util_arr_nth accept? +

util_arr_nth accepts 2 parameters: index, items. Required: index, items. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on util_arr_nth? +

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

What risk level is util_arr_nth? +

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

Can I rate-limit util_arr_nth? +

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

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

util_arr_nth is provided by the Delx MCP Server MCP server (delx-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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