getSalesTaxHolidays
Sales tax holidays for US states, with timezone-aware start and end timestamps, eligible item categories and per-item price caps. Supply a date, category and amount to get an exemption determination for a single purchase. Where a state lets each locality opt in or out, the endpoint returns exempt...
This record as markdown: /tools/com-api-ninjas-mcp/getsalestaxholidays.md
What getSalesTaxHolidays does on API Ninjas
AI agents call getSalesTaxHolidays to retrieve information from API Ninjas 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 |
|---|---|---|---|
date | string | — | ISO date (YYYY-MM-DD). Returns only holidays in effect on that date and adds an exemption determination. |
year | integer | — | Four-digit calendar year. Defaults to the current year. |
state | string | — | Two-letter US state code or full state name (e.g. TX or Texas). Omit for a nationwide list. |
amount | number | — | Item price to test against the holiday's price cap. |
category | string | — | Item category to test, e.g. clothing, school_supplies, computers, energy_star. An unknown category returns not_addressed rather than a guess. |
Parameters from the server's own tool schema.
Why getSalesTaxHolidays is rated Low
Even though getSalesTaxHolidays only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs getSalesTaxHolidays safely
PolicyLayer is an MCP gateway: it sits between your AI agents and API Ninjas, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For getSalesTaxHolidays, this is the rule to start with:
getSalesTaxHolidays 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 API Ninjas, apply this rule, and every getSalesTaxHolidays call is checked against it from then on.
Questions about getSalesTaxHolidays
Sales tax holidays for US states, with timezone-aware start and end timestamps, eligible item categories and per-item price caps. Supply a date, category and amount to get an exemption determination for a single purchase. Where a state lets each locality opt in or out, the endpoint returns exempt: null with determination: 'indeterminate' and a required_input array rather than a flat true, because participation is not decidable from the state alone. Price caps are per item in most states, not per transaction; cap_basis says which. Asking for a year the state has not yet published returns an empty result set with a coverage note, not an error and not last year's dates. This is reference data, not tax advice. It is categorised as a Read tool in the API Ninjas MCP Server, which means it retrieves data without modifying state.
getSalesTaxHolidays accepts 5 parameters: date, year, state, amount, category. The full parameter table on this page comes from the server's own tool schema.
Register the API Ninjas MCP server in PolicyLayer and add a rule for getSalesTaxHolidays: 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 API Ninjas. Nothing to install.
getSalesTaxHolidays 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 getSalesTaxHolidays 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 getSalesTaxHolidays. 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.
getSalesTaxHolidays is provided by the API Ninjas MCP server (https://mcp.api-ninjas.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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