Low Risk

convert_time

Convert time from one timezone to another.

How to control convert_time ↓

What convert_time does on Weather MCP Server

AI agents call convert_time as a supporting operation in Weather MCP Server workflows.

ParameterTypeRequiredDescription
to_timezone string Target timezone (IANA timezone name)
datetime_str string DateTime string in ISO format (e.g., '2024-01-15T14:30:00') or 'now' for current time
from_timezone string Source timezone (IANA timezone name)

Parameters from the server's own tool schema.

Low Risk

Why convert_time needs a policy

This tool performs a pure in-memory timezone conversion calculation with no side effects, no data retrieval from external systems, no writes, and no execution of commands. It is a stateless utility function that transforms a time value between timezones.

From the tool's definition Convert time from one timezone to another

Documented attack patterns abuse exactly the kind of access convert_time gives an agent:

How to control convert_time

PolicyLayer is an MCP gateway — it sits between your AI agents and Weather MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for convert_time:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "convert_time": {
      "limits": [
        {
          "counter": "convert_time_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

convert_time gets a rate cap, and everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Weather MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
SET A RULE FOR THIS TOOL →

Free to start. No card required.

Related tools and policies

Go deeper

Questions about convert_time

What does the convert_time tool do? +

Convert time from one timezone to another. It is categorised as a Other tool in the Weather MCP Server MCP Server, which means it performs auxiliary operations.

What parameters does convert_time accept? +

convert_time accepts 3 parameters: to_timezone, datetime_str, from_timezone. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on convert_time? +

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

What risk level is convert_time? +

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

Can I rate-limit convert_time? +

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

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

convert_time is provided by the Weather MCP Server MCP server (isdaniel/mcp_weather_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Weather MCP Server tool call.

Start from Weather MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

8 Weather MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

// GET IN TOUCH

Have a question or want to learn more? Send us a message.

Message sent.

We'll get back to you soon.