# BlackBobs.ai Sales Tax Calculator

> BlackBobs.ai Sales Tax Calculator is a paid API for AI agents from blackbobs-ai.vercel.app, paid per call via x402, $0.186778/call, status unknown (last checked 2026-09-14).

Calculates sales tax for a given transaction, returning applicable tax rates and amounts

## Facts

- Endpoint: POST https://blackbobs-ai.vercel.app/api/sales-tax-calculator
- Price: $0.186778/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blackbobs-ai-sales-tax-calculator-d1de38bb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9nFME4Slw5K1j4NkK_yT4

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 blackbobs-ai-sales-tax-calculator-d1de38bb -d '<json body>'
```

Example prompt: Can you calculate the sales tax on a $150 purchase made in Austin, Texas — I need to know the exact tax amount and total price with tax included.

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call sales tax computation without committing to a subscription-based tax service. It is well-suited for AI agents handling ad-hoc invoice generation, e-commerce checkout enrichment, or financial calculations where exact tax compliance is needed on-demand and cost-per-call pricing via x402 on Base chain is acceptable.

## Known failure modes

- Missing or invalid location input returns an error or empty result
- Unsupported jurisdiction or region not covered by the tax database
- Malformed request body causes a 400-level error
- Network or upstream service timeout returns a 5xx error
- Ambiguous location (e.g. city name without state) may return incorrect or no results

## How this service works

194 production-ready API endpoints. AI, Search, Social, Finance, Crypto. Pay-per-call with x402 on Base chain.

## Output

Returns a result object containing the computed sales tax rate, the tax amount for the given transaction, and potentially a breakdown by jurisdiction (state, county, city). The response follows the standard envelope with a 'result' containing the data object.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "result": {
   "data": "example response"
  }
 },
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blackbobs-ai-sales-tax-calculator-d1de38bb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blackbobs-ai.vercel.app](https://www.zero.xyz/host/blackbobs-ai.vercel.app/llms.txt)