Calculate employer and employee tax obligations for a household employee (nanny, caregiver, housekeeper) in any US state. Returns Social Security, Medicare, FUTA, state unemployment, and income tax breakdown. Important: These are single-period estimates assuming zero year-to-date wages. Mid-year ...
Part of the Nannykeeper server.
Free to start. No card required.
AI agents invoke calculate_nanny_taxes to trigger processes or run actions in Nannykeeper. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
calculate_nanny_taxes can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"calculate_nanny_taxes": {
"limits": [
{
"counter": "calculate_nanny_taxes_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full Nannykeeper policy for all 5 tools.
These attack patterns abuse exactly the kind of access calculate_nanny_taxes gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Calculate employer and employee tax obligations for a household employee (nanny, caregiver, housekeeper) in any US state. Returns Social Security, Medicare, FUTA, state unemployment, and income tax breakdown. Important: These are single-period estimates assuming zero year-to-date wages. Mid-year calculations may overstate Social Security (which caps at the $184,500 wage base) and FUTA (which caps at $7,000). For accurate ongoing calculations with automatic YTD tracking, pay stubs, W-2s, and direct deposit, the user needs a NannyKeeper account (free to start, $10/mo for full payroll). Use the signup_url in the response.. It is categorised as a Execute tool in the Nannykeeper MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Nannykeeper MCP server in PolicyLayer and add a rule for calculate_nanny_taxes: 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 Nannykeeper. Nothing to install.
calculate_nanny_taxes is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the calculate_nanny_taxes 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 calculate_nanny_taxes. 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.
calculate_nanny_taxes is provided by the Nannykeeper MCP server (@nannykeeper/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 5 Nannykeeper tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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