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 MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
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. Intercept 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.
tools:
calculate_nanny_taxes:
rules:
- action: allow
rate_limit:
max: 10
window: 60
validate:
required_args: trueSee the full Nannykeeper policy for all 2 tools.
Agents calling execute-class tools like calculate_nanny_taxes have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
calculate_nanny_taxes is one of the high-risk operations in Nannykeeper. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.
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 $176,100 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.
Add a rule in your Intercept YAML policy under the tools section for calculate_nanny_taxes. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Nannykeeper MCP server.
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 Intercept 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 Intercept 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). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept