# Sales Tax Calculator

> Sales Tax Calculator is a paid API for AI agents from sna4an-mega-v7.vercel.app, paid per call via x402, $0.11/call, status unknown (last checked 2026-10-31).

Calculates applicable sales tax for a given transaction, location, or product type

## Facts

- Endpoint: POST https://sna4an-mega-v7.vercel.app/api/sales-tax-calculator?utm_source=zero.xyz
- Price: $0.11/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sales-tax-calculator-d7540e59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FpUevEazmUh9R3zdBRKJh

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 sales-tax-calculator-d7540e59 -d '<json body>'
```

Example prompt: Can you calculate the sales tax on a $250 electronics purchase in Austin, Texas?

## When to prefer this

Use this endpoint when you need a quick, paid per-call sales tax computation without setting up a dedicated tax service integration. Best for lightweight e-commerce, invoicing, or compliance checks where occasional lookups are needed and a small per-call cost is acceptable. Not ideal for high-volume batch tax calculations where a subscription-based provider like TaxJar or Avalara would be more cost-effective.

## Known failure modes

- Missing required location or amount fields returns a 400 error
- Unrecognized jurisdiction or ZIP code may return null or default rate
- Empty input schema may cause unpredictable behavior given lack of defined fields
- Service may be unavailable or return 402 payment required if payment header is missing
- Stale tax rate data may return outdated rates for recently changed jurisdictions

## How this service works

Mega API hub - 118 endpoints covering social media, finance, sports, AI, e-commerce, and more

## Output

Returns the applicable sales tax rate and computed tax amount for the specified transaction, potentially broken down by state and local jurisdiction components, along with the total amount including tax.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sales-tax-calculator-d7540e59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sna4an-mega-v7.vercel.app](https://www.zero.xyz/host/sna4an-mega-v7.vercel.app/llms.txt)