array_nth

Get item at specific index.

SERVERTinyFn SOURCEhttps://api.tinyfn.io/mcp/all/

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-tinyfn-tinyfn/array-nth.md

WHAT IT DOES

What array_nth does on TinyFn

AI agents call array_nth to retrieve information from TinyFn 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	Index (0-based, negative for from end)
`items`	string	Yes	Comma-separated items

Parameters from the server's own tool schema.

RISK

Why array_nth is rated Low

This is a simple read-only operation that retrieves data from an array at a specified position. It has no side effects, cannot modify data, and presents minimal risk even if misused by an AI agent. It falls squarely under the Read category.

From the tool's definition Tool name 'array_nth' and description 'Get item at specific index' indicate retrieval of an existing element without modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs array_nth safely

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

array_nth Allowed

array_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": {
    "array_nth": {}
  }
}

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

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

FAQ

Questions about array_nth

What does the array_nth tool do? +

Get item at specific index. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.

What parameters does array_nth accept? +

array_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 array_nth? +

Register the TinyFn MCP server in PolicyLayer and add a rule for array_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 TinyFn. Nothing to install.

What risk level is array_nth? +

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

Can I rate-limit array_nth? +

Yes. Add a rate_limit block to the array_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 array_nth completely? +

Set action: deny in the PolicyLayer policy for array_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 array_nth? +

array_nth is provided by the TinyFn MCP server (https://api.tinyfn.io/mcp/all/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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