generate_phones

Generate random placeholder phone numbers.

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

Medium RISK CLASS

Category Write

Parameters 20 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-tinyfn-tinyfn/generate-phones.md

WHAT IT DOES

What generate_phones does on TinyFn

AI agents use generate_phones to create or update resources in TinyFn, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your TinyFn environment.

Parameter	Type	Required	Description
`count`	integer	—	Number of phone numbers
`format`	string	—	Format: us, international

Parameters from the server's own tool schema.

RISK

Why generate_phones is rated Medium

This tool creates/generates data (placeholder phone numbers) which is a Write operation. However, since these are random placeholders with no integration to real phone systems or data storage, the severity is low. The confidence is 0.85 rather than higher because the description lacks detail about whether generated numbers are stored, used for testing only, or have any side effects.

From the tool's definition Tool name 'generate_phones' and description 'Generate random placeholder phone numbers' indicate creation of data without persistence or side effects on external systems.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs generate_phones 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 generate_phones, this is the rule to start with:

generate_phones Rate-limited

generate_phones stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "generate_phones": {
      "limits": [
        {
          "counter": "generate_phones_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about generate_phones

What does the generate_phones tool do? +

Generate random placeholder phone numbers. It is categorised as a Write tool in the TinyFn MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does generate_phones accept? +

generate_phones accepts 2 parameters: count, format. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on generate_phones? +

Register the TinyFn MCP server in PolicyLayer and add a rule for generate_phones: 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 generate_phones? +

generate_phones is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit generate_phones? +

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

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

generate_phones 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.

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