imaznation/nannykeeper
MCP server and API examples for NannyKeeper — the household employer tax API. Calculate nanny taxes for all 50 US states.
Platform-specific configuration:
{
"mcpServers": {
"nannykeeper": {
"command": "npx",
"args": [
"-y",
"nannykeeper"
]
}
}
}Add the config above to .claude/settings.json under the mcpServers key.
The only API for calculating US household employer (nanny) taxes. Covers all 50 states + DC.
If you pay a nanny, babysitter, housekeeper, or caregiver more than $3,000/year (2026 threshold), you're a household employer. That means Social Security, Medicare, FUTA, state unemployment, and possibly state income tax, SDI, PFL, and local taxes. The rules are different in every state. This API handles all of it.
Get a free API key (email only, no credit card) at nannykeeper.com/developers/keys, then:
curl -X POST https://www.nannykeeper.com/api/v1/calculate \
-H "Authorization: Bearer nk_live_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"state":"CA","annual_wages":35000,"pay_frequency":"biweekly"}'Returns employer taxes (Social Security, Medicare, FUTA, state unemployment), employee tax estimates, per-paycheck cost, and threshold status — all from current-year tax data maintained for every state.
Not sure if you even need to pay taxes? The threshold endpoint tells you:
curl -H "Authorization: Bearer nk_live_YOUR_KEY" \
"https://www.nannykeeper.com/api/v1/threshold?state=CA&annual_wages=2500"For 2026, the federal FICA threshold is $3,000/year per employee. Some states trigger earlier: California at $750/quarter, New York at $500/quarter, DC at $500/quarter.
AI assistants guess at tax calculat
Loading reviews...