# StatePulse Sales Tax Rate Lookup

> StatePulse Sales Tax Rate Lookup is a paid API for AI agents from statepulse-api.hahavoid0.workers.dev, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-14).

Returns the estimated sales tax rate for a given US location by city, state, and/or ZIP code

## Facts

- Endpoint: POST https://statepulse-api.hahavoid0.workers.dev/finance/sales-tax
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/statepulse-sales-tax-rate-lookup-eb077a7a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tzs2cVYfOaH-zXTEI158g

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability statepulse-sales-tax-rate-lookup-eb077a7a -d '<json body>'
```

Example prompt: What's the estimated sales tax rate for Beverly Hills, CA 90210?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call US sales tax rate estimate for a specific city/state/ZIP combination without needing a full tax compliance platform or API key. Ideal for agents handling e-commerce calculations, invoice generation, or price quoting that need a lightweight, no-subscription tax lookup.

## Known failure modes

- Unsupported location returns supported:false with no rate
- Invalid or nonexistent ZIP code may return low confidence or error
- Missing required location parameters may result in a 400 or empty result
- Rates may be estimates and not reflect the most recent legislative changes

## How this service works

Locates the combined sales tax rate (state, county, local) for a US ZIP code using Zippopotam. Matches: sales tax rate calculator, zip code tax lookup, commercial sales tax checker, e-commerce tax estimator, state county city tax rates.

## Output

A JSON object containing the city, state, ZIP code, estimated combined sales tax rate as a decimal (e.g. 0.095 = 9.5%), a 'supported' boolean indicating whether the location is covered, and a confidence level string (e.g. 'high').

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "city": "Beverly Hills",
   "state": "CA",
   "zip_code": "90210",
   "estimated_sales_tax_rate": 0.095
  },
  "supported": true,
  "confidence": "high"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/statepulse-sales-tax-rate-lookup-eb077a7a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from statepulse-api.hahavoid0.workers.dev](https://www.zero.xyz/host/statepulse-api.hahavoid0.workers.dev/llms.txt)