age_calculator
Calendar Age Calculator — Compute calendar-accurate years/months/days between a birth date and an as-of date, plus total days and days until the next birthday.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/age-calculator.md
What age_calculator does on Gateway
AI agents call age_calculator to retrieve information from Gateway 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 |
|---|---|---|---|
as_of_date | string | Yes | Date to compute the age as of, ISO 'YYYY-MM-DD' |
birth_date | string | Yes | Birth date, ISO 'YYYY-MM-DD' |
Parameters from the server's own tool schema.
Why age_calculator is rated Low
This is a pure calculation tool that retrieves derived information from date inputs without modifying any data, executing code, or triggering external operations. It fits the Read category definition of retrieving or querying data with no side effects. Low severity because misuse poses minimal risk—an AI agent cannot cause harm with age calculations alone.
From the tool's definition Tool computes and returns calendar age information (years, months, days, days until birthday) based on input dates. Verb is 'Compute' with no modification, creation, or deletion of data. No side effects or irreversible actions.
Attacks that exploit this kind of access
The rule that runs age_calculator safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Gateway, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For age_calculator, this is the rule to start with:
age_calculator is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Gateway, apply this rule, and every age_calculator call is checked against it from then on.
Questions about age_calculator
Calendar Age Calculator — Compute calendar-accurate years/months/days between a birth date and an as-of date, plus total days and days until the next birthday. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
age_calculator accepts 2 parameters: as_of_date, birth_date. Required: as_of_date, birth_date. The full parameter table on this page comes from the server's own tool schema.
Register the Gateway MCP server in PolicyLayer and add a rule for age_calculator: 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 Gateway. Nothing to install.
age_calculator is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the age_calculator 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.
Set action: deny in the PolicyLayer policy for age_calculator. 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.
age_calculator is provided by the Gateway MCP server (https://wingmanprotocol.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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