convert_timezone

Convert datetime between timezones.

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

Low RISK CLASS

Category Read

Parameters 31 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-tinyfn-tinyfn/convert-timezone.md

WHAT IT DOES

What convert_timezone does on TinyFn

AI agents call convert_timezone 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
`to_tz`	string	—	Target timezone
`from_tz`	string	—	Source timezone
`datetime_str`	string	Yes	Datetime in ISO format

Parameters from the server's own tool schema.

RISK

Why convert_timezone is rated Low

This tool performs a read/compute operation: it takes a datetime and converts it from one timezone to another. It does not persist, modify, delete, or transmit any data. It is a stateless, deterministic utility function consistent with the server's description of '500+ deterministic tools'.

From the tool's definition Convert datetime between timezones — a pure deterministic transformation with no side effects

Attacks that exploit this kind of access

RECOMMENDED RULE

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

convert_timezone Allowed

convert_timezone 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": {
    "convert_timezone": {}
  }
}

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 convert_timezone call is checked against it from then on.

FAQ

Questions about convert_timezone

What does the convert_timezone tool do? +

Convert datetime between timezones. It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.

What parameters does convert_timezone accept? +

convert_timezone accepts 3 parameters: to_tz, from_tz, datetime_str. Required: datetime_str. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on convert_timezone? +

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

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

Can I rate-limit convert_timezone? +

Yes. Add a rate_limit block to the convert_timezone 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_timezone completely? +

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

convert_timezone 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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